Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar
Atrazine and diuron are two pesticide compounds with very low surface interaction capacity, whose adsorption efficiency remains a challenge in environmental remediation applications. In this work, statistical physics (sta-phy) modelling and density functional theory (DFT) calculations have explored...
- Autores:
-
Vieira, Yasmin
Pereira Silveira, Juliano
Dotto, Guilherme Luiz
Knani, Salah
Vieillard, Julien.
georgin, jordana
Dison S.P., Franco
Lima, Eder C.
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2022
- Institución:
- Corporación Universidad de la Costa
- Repositorio:
- REDICUC - Repositorio CUC
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.cuc.edu.co:11323/10782
- Acceso en línea:
- https://hdl.handle.net/11323/10782
https://repositorio.cuc.edu.co/
- Palabra clave:
- Pesticides
DFT calculations
Atrazine and diuron
Adsorption mechanism
- Rights
- embargoedAccess
- License
- Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)
id |
RCUC2_2c63e7d8472a196b7e243e0d1a1c4071 |
---|---|
oai_identifier_str |
oai:repositorio.cuc.edu.co:11323/10782 |
network_acronym_str |
RCUC2 |
network_name_str |
REDICUC - Repositorio CUC |
repository_id_str |
|
dc.title.none.fl_str_mv |
Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar |
title |
Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar |
spellingShingle |
Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar Pesticides DFT calculations Atrazine and diuron Adsorption mechanism |
title_short |
Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar |
title_full |
Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar |
title_fullStr |
Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar |
title_full_unstemmed |
Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar |
title_sort |
Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar |
dc.creator.fl_str_mv |
Vieira, Yasmin Pereira Silveira, Juliano Dotto, Guilherme Luiz Knani, Salah Vieillard, Julien. georgin, jordana Dison S.P., Franco Lima, Eder C. |
dc.contributor.author.none.fl_str_mv |
Vieira, Yasmin Pereira Silveira, Juliano Dotto, Guilherme Luiz Knani, Salah Vieillard, Julien. georgin, jordana Dison S.P., Franco Lima, Eder C. |
dc.subject.proposal.eng.fl_str_mv |
Pesticides DFT calculations Atrazine and diuron Adsorption mechanism |
topic |
Pesticides DFT calculations Atrazine and diuron Adsorption mechanism |
description |
Atrazine and diuron are two pesticide compounds with very low surface interaction capacity, whose adsorption efficiency remains a challenge in environmental remediation applications. In this work, statistical physics (sta-phy) modelling and density functional theory (DFT) calculations have explored several still unveiled mechanisms involved. A model activated carbon (AC) sample was produced with Hovenia dulcis fruit residues, a local invasive tree species. The adsorption process was spontaneous and endothermic, and the adsorption capacities (Qm ) increased as the temperature increased. The number of adsorbate molecules per site (n) decreased as the density of the receptor site (Nm) increased, revealing that the temperature influences the geometry of the molecules during the surface interaction. According to the electrostatic mapping provided by the DFT calculations, it was possible to infer that the obtained Qm values for atrazine, between 42.54 and 73.20 mg g−1, can be a response caused by its own self-repulsion. For diuron, due to its increased neutrality, the potential balance of the electrostatic charges between adsorbate-adsorbent tends to be more effective, resulting in higher Qm values, ranging from 97.91 to 119.7 mg g−1. Therefore, the combination of sta-phy modelling with quantum mechanics calculations is a powerful tool for mechanism interpretation, capable of providing complementary insights into the adsorption process from both adsorbent and adsorbate perspectives. |
publishDate |
2022 |
dc.date.issued.none.fl_str_mv |
2022-12-01 |
dc.date.accessioned.none.fl_str_mv |
2024-02-23T15:41:59Z |
dc.date.available.none.fl_str_mv |
2024-12-01 2024-02-23T15:41:59Z |
dc.type.spa.fl_str_mv |
Artículo de revista |
dc.type.coar.spa.fl_str_mv |
http://purl.org/coar/resource_type/c_2df8fbb1 |
dc.type.content.spa.fl_str_mv |
Text |
dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.redcol.spa.fl_str_mv |
http://purl.org/redcol/resource_type/ART |
dc.type.version.spa.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.coarversion.spa.fl_str_mv |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
format |
http://purl.org/coar/resource_type/c_2df8fbb1 |
status_str |
publishedVersion |
dc.identifier.citation.spa.fl_str_mv |
Yasmin Vieira, Juliano Pereira Silveira, Guilherme Luiz Dotto, Salah Knani, Julien. Vieillard, Jordana Georgin, Dison S.P. Franco, Eder C. Lima, Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar, Journal of Molecular Liquids, Volume 367, Part A, 2022, 120418, ISSN 0167-7322, https://doi.org/10.1016/j.molliq.2022.120418 |
dc.identifier.issn.spa.fl_str_mv |
0167-7322 |
dc.identifier.uri.none.fl_str_mv |
https://hdl.handle.net/11323/10782 |
dc.identifier.doi.none.fl_str_mv |
10.1016/j.molliq.2022.120418 |
dc.identifier.eissn.spa.fl_str_mv |
1873-3166 |
dc.identifier.instname.spa.fl_str_mv |
Corporación Universidad de la Costa |
dc.identifier.reponame.spa.fl_str_mv |
REDICUC – Repositorio CUC |
dc.identifier.repourl.spa.fl_str_mv |
https://repositorio.cuc.edu.co/ |
identifier_str_mv |
Yasmin Vieira, Juliano Pereira Silveira, Guilherme Luiz Dotto, Salah Knani, Julien. Vieillard, Jordana Georgin, Dison S.P. Franco, Eder C. Lima, Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar, Journal of Molecular Liquids, Volume 367, Part A, 2022, 120418, ISSN 0167-7322, https://doi.org/10.1016/j.molliq.2022.120418 0167-7322 10.1016/j.molliq.2022.120418 1873-3166 Corporación Universidad de la Costa REDICUC – Repositorio CUC |
url |
https://hdl.handle.net/11323/10782 https://repositorio.cuc.edu.co/ |
dc.language.iso.spa.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofjournal.spa.fl_str_mv |
Journal of Molecular Liquids |
dc.relation.references.spa.fl_str_mv |
[1] A.S. Jatoi, Z. Hashmi, R. Adriyani, A. Yuniarto, S.A. Mazari, F. Akhter, N.M. Mubarak, Recent trends and future challenges of pesticide removal techniques – a comprehensive review, J. Environ. Chem. Eng. 9 (4) (2021) 105571, https:// doi.org/10.1016/J.JECE.2021.105571. [2] A.G. Hornsby, A.E. Herner, R. Wauchope, Pesticide properties in the environment, Pestic. Prop. Environ. (1996), https://doi.org/10.1007/978-1- 4612-2316-0/COVER. [3] M.J. Sanchez-Martin, M.S. Rodriguez-Cruz, M.S. Andrades, M. SanchezCamazano, Efficiency of different clay minerals modified with a cationic surfactant in the adsorption of pesticides: influence of clay type and pesticide hydrophobicity, Appl. Clay Sci. 31 (2006) 216–228, https://doi.org/10.1016/J. CLAY.2005.07.008. [4] K.A. Krogh, B. Halling-Sørensen, B.B. Mogensen, K.V. Vejrup, Environmental properties and effects of nonionic surfactant adjuvants in pesticides: a review, Chemosphere. 50 (2003) 871–901, https://doi.org/10.1016/S0045-6535(02) 00648-3. [5] S. Varjani, G. Kumar, E.R. Rene, Developments in biochar application for pesticide remediation: current knowledge and future research directions, J. Environ. Manage. 232 (2019) 505–513, https://doi.org/10.1016/J. JENVMAN.2018.11.043. [6] L. Sellaoui, H. Guedidi, S. Knani, L. Reinert, L. Duclaux, A. Ben Lamine, Application of statistical physics formalism to the modeling of adsorption isotherms of ibuprofen on activated carbon, Fluid Phase Equilib. 387 (2015) 103–110, https://doi.org/10.1016/J.FLUID.2014.12.018. [7] L. Sellaoui, É.C. Lima, G.L. Dotto, S.L.P. Dias, A. Ben Lamine, Physicochemical modeling of reactive violet 5 dye adsorption on a home-made cocoa shell and commercial activated carbons using the statistical physics theory, Results Phys. 7 (2017) 233–237, https://doi.org/10.1016/J.RINP.2016.12.014. [8] M. Khalfaoui, S. Knani, M.A. Hachicha, A.B. Lamine, New theoretical expressions for the five adsorption type isotherms classified by BET based on statistical physics treatment, J. Colloid Interface Sci. 263 (2) (2003) 350–356. [9] S. Knani, M. Mathlouthi, A. Ben Lamine, Modeling of the psychophysical response curves using the grand canonical ensemble in statistical physics, Food Biophys. 2 (2007) 183–192, https://doi.org/10.1007/S11483-007-9042-7/ FIGURES/3. [10] L. Sellaoui, N. Mechi, É.C. Lima, G.L. Dotto, A. Ben Lamine, Adsorption of diclofenac and nimesulide on activated carbon: statistical physics modeling and effect of adsorbate size, J. Phys. Chem. Solids. 109 (2017) 117–123, https:// doi.org/10.1016/J.JPCS.2017.05.019. [11] F. Ayachi, E.C. Lima, A. Sakly, H. Mejri, A. Ben Lamine, Modeling of adsorption isotherms of reactive red RR-120 on spirulina platensis by statistical physics formalism involving interaction effect between adsorbate molecules, Prog. Biophys. Mol. Biol. 141 (2019) 47–59, https://doi.org/10.1016/J. PBIOMOLBIO.2018.07.004. [12] Y. Vieira, C. Schnorr, A.C. Piazzi, M.S. Netto, W.M. Piccini, D.S.P. Franco, E.S. Mallmann, J. Georgin, L.F.O. Silva, G.L. Dotto, An advanced combination of density functional theory simulations and statistical physics modeling in the unveiling and prediction of adsorption mechanisms of 2,4-D pesticide to activated carbon, J. Mol. Liq. 361 (2022), https://doi.org/10.1016/J. MOLLIQ.2022.119639 119639. [13] P.P. Mkhonto, X. Zhang, L. Lu, W. Xiong, Y. Zhu, L. Han, P.E. Ngoepe, Adsorption mechanisms and effects of thiocarbamate collectors in the separation of chalcopyrite from pyrite minerals: DFT and experimental studies, Miner. Eng. 176 (2022), https://doi.org/10.1016/J. MINENG.2021.107318 107318. [14] Z. Feng, N. Chen, T. Liu, C. Feng, KHCO3 activated biochar supporting MgO for Pb(II) and Cd(II) adsorption from water: experimental study and DFT calculation analysis, J. Hazard. Mater. 426 (2022), https://doi.org/10.1016/J. JHAZMAT.2021.128059 128059. [15] M. Wei, F. Marrakchi, C. Yuan, X. Cheng, D. Jiang, F.F. Zafar, Y. Fu, S. Wang, Adsorption modeling, thermodynamics, and DFT simulation of tetracycline onto mesoporous and high-surface-area NaOH-activated macroalgae carbon, J. Hazard. Mater. 425 (2022), https://doi.org/10.1016/J.JHAZMAT.2021.127887 127887. [16] S. Kopachon, K. Suriya, K. Hardwick, G. Pakaad, J.F. Maxwell, V. Anusarnsunthorn, D. Blakesley, N.C. Garwood, S. Elliott, Forest restoration research in Northern Thailand, 1. the fruits, seeds and seedlings of Hovenia dulcis Thunb. (Rhamnaceae), Nat. Hist. Bull. Siam Soc. 44 (1996) 41–52. Available from: https://thesiamsociety.org/wp-content/uploads/2020/04/ NHBSS_044_1h_Kopachon_ForestRestoratio.pdf (accessed July 2, 2022). [17] R.D. Zenni, R.S. Ziller, An overview of invasive plants in Brazil, Br. J. Bot. 34 (2011) 431–446, https://doi.org/10.1590/S0100-84042011000300016. [18] T.K. Hyun, S.H. Eom, C.Y. Yu, T. Roitsch, Hovenia dulcis – an Asian Traditional Herb, Planta Med. 76 (2010) 943–949, https://doi.org/10.1055/S-0030- 1249776. [19] D.L. Padilha, A.C. Loregian, J.C. Budke, Forest fragmentation does not matter to invasions by Hovenia dulcis, Biodivers. Conserv. 24 (2015) 2293–2304, https:// doi.org/10.1007/S10531-015-0930-8/TABLES/2. [20] L. Kuglerová, L. García, I. Pardo, Y. Mottiar, J.S. Richardson, Does leaf litter from invasive plants contribute the same support of a stream ecosystem function as native vegetation?, Ecosphere 8 (2017) e01779, https://doi.org/10.1002/ ECS2.1779. [21] S. Medina-Villar, Á. Alonso, P. Castro-Díez, M.E. Pérez-Corona, Allelopathic potentials of exotic invasive and native trees over coexisting understory species: the soil as a modulator, Plant Ecol. 218 (2017) 579–594, https://doi. org/10.1007/S11258-017-0713-2/FIGURES/6. [22] A.F. Figueiredo, F.G. Augusto, L.D. Coletta, P.J. Duarte-Neto, E.A. Mazzi, L.A. Martinelli, Comparison of microbial processing of Brachiaria brizantha, a C4 invasive species and a rainforest species in tropical streams of the Atlantic Forest of south-eastern Brazil, Mar. Freshw. Res. 69 (2018) 1397–1407, https:// doi.org/10.1071/MF17080. [23] K. Mohanty, M. Jha, B.C. Meikap, M.N. Biswas, Removal of chromium (VI) from dilute aqueous solutions by activated carbon developed from Terminalia arjuna nuts activated with zinc chloride, Chem. Eng. Sci. 60 (2005) 3049–3059, https://doi.org/10.1016/J.CES.2004.12.049. [24] K. Mohanty, M. Jha, B.C. Meikap, M.N. Biswas, Preparation and characterisation of activated carbons from Terminalia arjuna nut with zinc chloride activation for the removal of phenol from wastewater, Ind. Eng. Chem. Res. 44 (2005) 4128–4138, https://doi.org/10.1021/IE050162. [25] G. Job, F. Herrmann, Chemical potential—a quantity in search of recognition, Eur. J. Phys. 27 (2) (2006) 353–371. [26] M. Franco-Pérez, C.A. Polanco-Ramírez, J.L. Gázquez, P.W. Ayers, Local and nonlocal counterparts of global descriptors: the cases of chemical softness and hardness, J. Mol. Model. 24 (2018) 1–8, https://doi.org/10.1007/S00894-018- 3823-4/TABLES/3. [27] R.G. Parr, L.V. Szentpály, S. Liu, Electrophilicity Index, J. Am. Chem. Soc. 121 (1999) 1922–1924, https://doi.org/10.1021/JA983494X. [28] M.D. Hanwell, D.E. Curtis, D.C. Lonie, T. Vandermeerschd, E. Zurek, G.R. Hutchison, Avogadro: an advanced semantic chemical editor, visualisation, and analysis platform, J. Cheminform. 4 (2012) 1–17, https://doi.org/10.1186/ 1758-2946-4-17/FIGURES/14. [29] M.J. Frisch, J.A. Pople, J.S. Binkley, Self-consistent molecular orbital methods 25. Supplementary functions for Gaussian basis sets, J. Chem. Phys. 80 (7) (1984) 3265–3269. [30] D.C. Young, Computational Chemistry: A Practical Guide for Applying Techniques to Real-World Problems, 2001, Available from: www.wiley.com (accessed April 13, 2022). [31] S. Knani, M. Khalfaoui, M.A. Hachicha, M. Mathlouthi, A. Ben Lamine, Interpretation of psychophysics response curves using statistical physics, Food Chem. 151 (2014) 487–499, https://doi.org/10.1016/ j.foodchem.2013.11.114. [32] L. Sellaoui, E.C. Lima, G.L. Dotto, A. Ben Lamine, Adsorption of amoxicillin and paracetamol on modified activated carbons: equilibrium and positional entropy studies, J. Mol. Liq. 234 (2017) 375–381, doi: 10.1016/ j.molliq.2017.03.111. [33] D.S.P. Franco, J. Georgin, M.S. Netto, K. da Boit Martinello, L.F.O. Silva, Preparation of activated carbons from fruit residues for the removal of naproxen (NPX): analytical interpretation via statistical physical model, J. Mol. Liq. 356 (2022), https://doi.org/10.1016/J.MOLLIQ.2022.119021 119021. [34] X. Pang, L. Sellaoui, D. Franco, M.S. Netto, J. Georgin, G. Luiz Dotto, M.K. Abu Shayeb, H. Belmabrouk, A. Bonilla-Petriciolet, Z. Li, Preparation and characterisation of a novel mountain soursop seeds powder adsorbent and its application for the removal of crystal violet and methylene blue from aqueous solutions, Chem. Eng. J. 391 (2020), https://doi.org/10.1016/J. CEJ.2019.123617 123617. [35] L. Sellaoui, F. Dhaouadi, Z. Li, T.R.S. Cadaval, A.V. Igansi, L.A.A. Pinto, G.L. Dotto, A. Bonilla-Petriciolet, D. Pinto, Z. Chen, Implementation of a multilayer statistical physics model to interpret the adsorption of food dyes on a chitosan film, J. Environ. Chem. Eng. 9 (4) (2021) 105516. [36] H.A. Al-Yousef, B.M. Alotaibi, M.M. Alanazi, F. Aouaini, L. Sellaoui, A. BonillaPetriciolet, Theoretical assessment of the adsorption mechanism of ibuprofen, ampicillin, orange G and malachite green on biomass functionalised with plasma, J. Environ. Chem. Eng. 9 (2021), https://doi.org/10.1016/J. JECE.2020.104950 104950. [37] G.L. Dotto, L.A.A. Pinto, M.A. Hachicha, S. Knani, New physicochemical interpretations for the adsorption of food dyes on chitosan films using statistical physics treatment, Food Chem. 171 (2015) 1–7, https://doi.org/ 10.1016/J.FOODCHEM.2014.08.098. [38] É.C. Lima, M.H. Dehghani, A. Guleria, F. Sher, R.R. Karri, G.L. Dotto, H.N. Tran, Adsorption: fundamental aspects and applications of adsorption for effluent treatment, Green Technol. Defluoridation Water (2021) 41–88, https://doi.org/ 10.1016/B978-0-323-85768-0.00004-X. [39] P. Saha, S. Chowdhury, Insight Into Adsorption Thermodynamics, InTech, 2011. [40] M. Khalfaoui, A. Nakhli, C. Aguir, A. Omri, M.F. M’henni, A. Ben Lamine, Statistical thermodynamics of adsorption of dye DR75 onto natural materials and its modifications: double-layer model with two adsorption energies, Environ. Sci. Pollut. Res. 21 (2014) 3134–3144, doi: 10.1007/S11356-013- 2263-Z/FIGURES/10. [41] A. Nakhli, M. Khalfaoui, C. Aguir, M. Bergaoui, M.F. M’henni, A. Ben Lamine, Statistical physics studies of multilayer adsorption on solid surface: adsorption of basic blue 41 Dye onto functionalized Posidonia biomass, Sep. Sci. Technol. 49 (16) (2014) 2525–2533. [42] B. Rotenberg, A.J. Patel, D. Chandler, Molecular explanation for why talc surfaces can be both hydrophilic and hydrophobic, J. Am. Chem. Soc. 133 (2011) 20521–20527, https://doi.org/10.1021/JA208687A/SUPPL_FILE/ JA208687A_SI_001.PDF. [43] D.H. Bangham, The Gibbs adsorption equation and adsorption on solids, Trans. Faraday Soc. 33 (1937) 805–811, https://doi.org/10.1039/TF9373300805. [44] Y. Tan, M. Guo, Using surface free energy method to study the cohesion and adhesion of asphalt mastic, Constr. Build. Mater. 47 (2013) 254–260, https:// doi.org/10.1016/J.CONBUILDMAT.2013.05.067. [45] L. Sellaoui, S. Knani, A. Erto, M.A. Hachicha, A. Ben Lamine, Equilibrium isotherm simulation of tetrachlorethylene on activated carbon using the double layer model with two energies: steric and energetic interpretations, Fluid Phase Equilib. 408 (2016) 259–264, https://doi.org/10.1016/J. FLUID.2015.09.022. [46] K. Zhou, W. Ma, Z. Zeng, X. Ma, X. Xu, Y. Guo, H. Li, L. Li, Experimental and DFT study on the adsorption of VOCs on activated carbon/metal oxides composites, Chem. Eng. J. 372 (2019) 1122–1133, https://doi.org/10.1016/J. CEJ.2019.04.218. [47] S. Martinez, Inhibitory mechanism of mimosa tannin using molecular modeling and substitutional adsorption isotherms, Mater. Chem. Phys. 77 (2003) 97–102, https://doi.org/10.1016/S0254-0584(01)00569-7. [48] M. Sbizzaro, S. César Sampaio, R. Rinaldo dos Reis, F. de Assis Beraldi, D. Medina Rosa, C. Maria Branco de Freitas Maia, C. Saramago de Carvalho Marques dos Santos Cordovil, C. Tillvitz do Nascimento, E. Antonio da Silva, C. Eduardo Borba, Effect of production temperature in biochar properties from bamboo culm and its influences on atrazine adsorption from aqueous systems, J. Mol. Liq. 343 (2021) 117667, https://doi.org/10.1016/J. MOLLIQ.2021.117667. [49] G. Tan, W. Sun, Y. Xu, H. Wang, N. Xu, Sorption of mercury (II) and atrazine by biochar, modified biochars and biochar based activated carbon in aqueous solution, Bioresour. Technol. 211 (2016) 727–735, https://doi.org/10.1016/J. BIORTECH.2016.03.147. [50] X. Zhao, W. Ouyang, F. Hao, C. Lin, F. Wang, S. Han, X. Geng, Properties comparison of biochars from corn straw with different pretreatment and sorption behaviour of atrazine, Bioresour. Technol. 147 (2013) 338–344, https://doi.org/10.1016/J.BIORTECH.2013.08.042. [51] L.F. Cusioli, C.d.O. Bezerra, H.B. Quesada, A.T. Alves Baptista, L. Nishi, M.F. Vieira, R. Bergamasco, Modified Moringa oleifera Lam. Seed husks as low-cost biosorbent for atrazine removal, Environ. Technol. 42 (7) (2021) 1092–1103. [52] A. Alahabadi, G. Moussavi, Preparation, characterisation and atrazine adsorption potential of mesoporous carbonate-induced activated biochar (CAB) from Calligonum Comosum biomass: parametric experiments and kinetics, equilibrium and thermodynamic modeling, J. Mol. Liq. 242 (2017) 40–52, https://doi.org/10.1016/j.molliq.2017.06.116. [53] A. Wong, F.M. de Oliveira, C.R.T. Tarley, M. Del Pilar Taboada Sotomayor, Study on the cross-linked molecularly imprinted poly(methacrylic acid) and poly (acrylic acid) towards selective adsorption of diuron, React. Funct. Polym. 100 (2016) 26–36, https://doi.org/10.1016/j.reactfunctpolym.2016.01.006. [54] M. Zbair, M. Bottlinger, K. Ainassaari, S. Ojala, O. Stein, R.L. Keiski, M. Bensitel, R. Brahmi, Hydrothermal carbonization of Argan nut shell: functional mesoporous carbon with excellent performance in the adsorption of bisphenol A and diuron, Waste and Biomass Valorisation 11 (2020) 1565– 1584, https://doi.org/10.1007/S12649-018-00554-0/TABLES/5. [55] L.M. Ndjientcheu Yossa, S.K. Ouiminga, S.S. Sidibe, I.W.K. Ouedraogo, Synthesis of a cleaner potassium hydroxide-activated carbon from baobab seeds hulls and investigation of adsorption mechanisms for diuron: chemical activation as an alternative route for the preparation of activated carbon from baobab seeds hulls and adsorption of diuron, Sci. Afr. 9 (2020) e00476. [56] C.d.O. Bezerra, L.F. Cusioli, H.B. Quesada, L. Nishi, D. Mantovani, M.F. Vieira, R. Bergamasco, Assessment of the use of Moringa oleifera seed husks for removal of pesticide diuron from contaminated water, Environ. Technol. 41 (2) (2020) 191–201. |
dc.relation.citationvolume.spa.fl_str_mv |
367 |
dc.rights.eng.fl_str_mv |
© 2022 Elsevier B.V. All rights reserved. |
dc.rights.license.spa.fl_str_mv |
Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) |
dc.rights.uri.spa.fl_str_mv |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
dc.rights.accessrights.spa.fl_str_mv |
info:eu-repo/semantics/embargoedAccess |
dc.rights.coar.spa.fl_str_mv |
http://purl.org/coar/access_right/c_f1cf |
rights_invalid_str_mv |
Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0) © 2022 Elsevier B.V. All rights reserved. https://creativecommons.org/licenses/by-nc-nd/4.0/ http://purl.org/coar/access_right/c_f1cf |
eu_rights_str_mv |
embargoedAccess |
dc.format.extent.spa.fl_str_mv |
10 páginas |
dc.format.mimetype.spa.fl_str_mv |
application/pdf |
dc.publisher.spa.fl_str_mv |
Elsevier BV |
dc.publisher.place.spa.fl_str_mv |
Netherlands |
dc.source.spa.fl_str_mv |
https://www.sciencedirect.com/science/article/pii/S0167732222019572 |
institution |
Corporación Universidad de la Costa |
bitstream.url.fl_str_mv |
https://repositorio.cuc.edu.co/bitstreams/77a29a99-7213-41a0-be75-ecdeb516be02/download https://repositorio.cuc.edu.co/bitstreams/e548716c-71d7-4a68-8bc0-41964f2f52bf/download https://repositorio.cuc.edu.co/bitstreams/e53e9eb3-fd00-44e6-b090-6df5c1921ffb/download https://repositorio.cuc.edu.co/bitstreams/e88a8a89-204f-464c-98b7-351c96cc4f75/download |
bitstream.checksum.fl_str_mv |
3acf48f3b0885edc0fece50eba12574e 2f9959eaf5b71fae44bbf9ec84150c7a 104314cdca103d0751c95e7ff4f38669 187b622f2ea597a73fc7aba4b45782af |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositorio de la Universidad de la Costa CUC |
repository.mail.fl_str_mv |
repdigital@cuc.edu.co |
_version_ |
1811760816369696768 |
spelling |
Atribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)© 2022 Elsevier B.V. All rights reserved.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/embargoedAccesshttp://purl.org/coar/access_right/c_f1cfVieira, YasminPereira Silveira, JulianoDotto, Guilherme LuizKnani, SalahVieillard, Julien.georgin, jordanaDison S.P., FrancoLima, Eder C.2024-02-23T15:41:59Z2024-12-012024-02-23T15:41:59Z2022-12-01Yasmin Vieira, Juliano Pereira Silveira, Guilherme Luiz Dotto, Salah Knani, Julien. Vieillard, Jordana Georgin, Dison S.P. Franco, Eder C. Lima, Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar, Journal of Molecular Liquids, Volume 367, Part A, 2022, 120418, ISSN 0167-7322, https://doi.org/10.1016/j.molliq.2022.1204180167-7322https://hdl.handle.net/11323/1078210.1016/j.molliq.2022.1204181873-3166Corporación Universidad de la CostaREDICUC – Repositorio CUChttps://repositorio.cuc.edu.co/Atrazine and diuron are two pesticide compounds with very low surface interaction capacity, whose adsorption efficiency remains a challenge in environmental remediation applications. In this work, statistical physics (sta-phy) modelling and density functional theory (DFT) calculations have explored several still unveiled mechanisms involved. A model activated carbon (AC) sample was produced with Hovenia dulcis fruit residues, a local invasive tree species. The adsorption process was spontaneous and endothermic, and the adsorption capacities (Qm ) increased as the temperature increased. The number of adsorbate molecules per site (n) decreased as the density of the receptor site (Nm) increased, revealing that the temperature influences the geometry of the molecules during the surface interaction. According to the electrostatic mapping provided by the DFT calculations, it was possible to infer that the obtained Qm values for atrazine, between 42.54 and 73.20 mg g−1, can be a response caused by its own self-repulsion. For diuron, due to its increased neutrality, the potential balance of the electrostatic charges between adsorbate-adsorbent tends to be more effective, resulting in higher Qm values, ranging from 97.91 to 119.7 mg g−1. Therefore, the combination of sta-phy modelling with quantum mechanics calculations is a powerful tool for mechanism interpretation, capable of providing complementary insights into the adsorption process from both adsorbent and adsorbate perspectives.10 páginasapplication/pdfengElsevier BVNetherlandshttps://www.sciencedirect.com/science/article/pii/S0167732222019572Mechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biocharArtículo de revistahttp://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a85Journal of Molecular Liquids[1] A.S. Jatoi, Z. Hashmi, R. Adriyani, A. Yuniarto, S.A. Mazari, F. Akhter, N.M. Mubarak, Recent trends and future challenges of pesticide removal techniques – a comprehensive review, J. Environ. Chem. Eng. 9 (4) (2021) 105571, https:// doi.org/10.1016/J.JECE.2021.105571.[2] A.G. Hornsby, A.E. Herner, R. Wauchope, Pesticide properties in the environment, Pestic. Prop. Environ. (1996), https://doi.org/10.1007/978-1- 4612-2316-0/COVER.[3] M.J. Sanchez-Martin, M.S. Rodriguez-Cruz, M.S. Andrades, M. SanchezCamazano, Efficiency of different clay minerals modified with a cationic surfactant in the adsorption of pesticides: influence of clay type and pesticide hydrophobicity, Appl. Clay Sci. 31 (2006) 216–228, https://doi.org/10.1016/J. CLAY.2005.07.008.[4] K.A. Krogh, B. Halling-Sørensen, B.B. Mogensen, K.V. Vejrup, Environmental properties and effects of nonionic surfactant adjuvants in pesticides: a review, Chemosphere. 50 (2003) 871–901, https://doi.org/10.1016/S0045-6535(02) 00648-3.[5] S. Varjani, G. Kumar, E.R. Rene, Developments in biochar application for pesticide remediation: current knowledge and future research directions, J. Environ. Manage. 232 (2019) 505–513, https://doi.org/10.1016/J. JENVMAN.2018.11.043.[6] L. Sellaoui, H. Guedidi, S. Knani, L. Reinert, L. Duclaux, A. Ben Lamine, Application of statistical physics formalism to the modeling of adsorption isotherms of ibuprofen on activated carbon, Fluid Phase Equilib. 387 (2015) 103–110, https://doi.org/10.1016/J.FLUID.2014.12.018.[7] L. Sellaoui, É.C. Lima, G.L. Dotto, S.L.P. Dias, A. Ben Lamine, Physicochemical modeling of reactive violet 5 dye adsorption on a home-made cocoa shell and commercial activated carbons using the statistical physics theory, Results Phys. 7 (2017) 233–237, https://doi.org/10.1016/J.RINP.2016.12.014.[8] M. Khalfaoui, S. Knani, M.A. Hachicha, A.B. Lamine, New theoretical expressions for the five adsorption type isotherms classified by BET based on statistical physics treatment, J. Colloid Interface Sci. 263 (2) (2003) 350–356.[9] S. Knani, M. Mathlouthi, A. Ben Lamine, Modeling of the psychophysical response curves using the grand canonical ensemble in statistical physics, Food Biophys. 2 (2007) 183–192, https://doi.org/10.1007/S11483-007-9042-7/ FIGURES/3.[10] L. Sellaoui, N. Mechi, É.C. Lima, G.L. Dotto, A. Ben Lamine, Adsorption of diclofenac and nimesulide on activated carbon: statistical physics modeling and effect of adsorbate size, J. Phys. Chem. Solids. 109 (2017) 117–123, https:// doi.org/10.1016/J.JPCS.2017.05.019.[11] F. Ayachi, E.C. Lima, A. Sakly, H. Mejri, A. Ben Lamine, Modeling of adsorption isotherms of reactive red RR-120 on spirulina platensis by statistical physics formalism involving interaction effect between adsorbate molecules, Prog. Biophys. Mol. Biol. 141 (2019) 47–59, https://doi.org/10.1016/J. PBIOMOLBIO.2018.07.004.[12] Y. Vieira, C. Schnorr, A.C. Piazzi, M.S. Netto, W.M. Piccini, D.S.P. Franco, E.S. Mallmann, J. Georgin, L.F.O. Silva, G.L. Dotto, An advanced combination of density functional theory simulations and statistical physics modeling in the unveiling and prediction of adsorption mechanisms of 2,4-D pesticide to activated carbon, J. Mol. Liq. 361 (2022), https://doi.org/10.1016/J. MOLLIQ.2022.119639 119639.[13] P.P. Mkhonto, X. Zhang, L. Lu, W. Xiong, Y. Zhu, L. Han, P.E. Ngoepe, Adsorption mechanisms and effects of thiocarbamate collectors in the separation of chalcopyrite from pyrite minerals: DFT and experimental studies, Miner. Eng. 176 (2022), https://doi.org/10.1016/J. MINENG.2021.107318 107318.[14] Z. Feng, N. Chen, T. Liu, C. Feng, KHCO3 activated biochar supporting MgO for Pb(II) and Cd(II) adsorption from water: experimental study and DFT calculation analysis, J. Hazard. Mater. 426 (2022), https://doi.org/10.1016/J. JHAZMAT.2021.128059 128059.[15] M. Wei, F. Marrakchi, C. Yuan, X. Cheng, D. Jiang, F.F. Zafar, Y. Fu, S. Wang, Adsorption modeling, thermodynamics, and DFT simulation of tetracycline onto mesoporous and high-surface-area NaOH-activated macroalgae carbon, J. Hazard. Mater. 425 (2022), https://doi.org/10.1016/J.JHAZMAT.2021.127887 127887.[16] S. Kopachon, K. Suriya, K. Hardwick, G. Pakaad, J.F. Maxwell, V. Anusarnsunthorn, D. Blakesley, N.C. Garwood, S. Elliott, Forest restoration research in Northern Thailand, 1. the fruits, seeds and seedlings of Hovenia dulcis Thunb. (Rhamnaceae), Nat. Hist. Bull. Siam Soc. 44 (1996) 41–52. Available from: https://thesiamsociety.org/wp-content/uploads/2020/04/ NHBSS_044_1h_Kopachon_ForestRestoratio.pdf (accessed July 2, 2022).[17] R.D. Zenni, R.S. Ziller, An overview of invasive plants in Brazil, Br. J. Bot. 34 (2011) 431–446, https://doi.org/10.1590/S0100-84042011000300016.[18] T.K. Hyun, S.H. Eom, C.Y. Yu, T. Roitsch, Hovenia dulcis – an Asian Traditional Herb, Planta Med. 76 (2010) 943–949, https://doi.org/10.1055/S-0030- 1249776.[19] D.L. Padilha, A.C. Loregian, J.C. Budke, Forest fragmentation does not matter to invasions by Hovenia dulcis, Biodivers. Conserv. 24 (2015) 2293–2304, https:// doi.org/10.1007/S10531-015-0930-8/TABLES/2.[20] L. Kuglerová, L. García, I. Pardo, Y. Mottiar, J.S. Richardson, Does leaf litter from invasive plants contribute the same support of a stream ecosystem function as native vegetation?, Ecosphere 8 (2017) e01779, https://doi.org/10.1002/ ECS2.1779.[21] S. Medina-Villar, Á. Alonso, P. Castro-Díez, M.E. Pérez-Corona, Allelopathic potentials of exotic invasive and native trees over coexisting understory species: the soil as a modulator, Plant Ecol. 218 (2017) 579–594, https://doi. org/10.1007/S11258-017-0713-2/FIGURES/6.[22] A.F. Figueiredo, F.G. Augusto, L.D. Coletta, P.J. Duarte-Neto, E.A. Mazzi, L.A. Martinelli, Comparison of microbial processing of Brachiaria brizantha, a C4 invasive species and a rainforest species in tropical streams of the Atlantic Forest of south-eastern Brazil, Mar. Freshw. Res. 69 (2018) 1397–1407, https:// doi.org/10.1071/MF17080.[23] K. Mohanty, M. Jha, B.C. Meikap, M.N. Biswas, Removal of chromium (VI) from dilute aqueous solutions by activated carbon developed from Terminalia arjuna nuts activated with zinc chloride, Chem. Eng. Sci. 60 (2005) 3049–3059, https://doi.org/10.1016/J.CES.2004.12.049.[24] K. Mohanty, M. Jha, B.C. Meikap, M.N. Biswas, Preparation and characterisation of activated carbons from Terminalia arjuna nut with zinc chloride activation for the removal of phenol from wastewater, Ind. Eng. Chem. Res. 44 (2005) 4128–4138, https://doi.org/10.1021/IE050162.[25] G. Job, F. Herrmann, Chemical potential—a quantity in search of recognition, Eur. J. Phys. 27 (2) (2006) 353–371.[26] M. Franco-Pérez, C.A. Polanco-Ramírez, J.L. Gázquez, P.W. Ayers, Local and nonlocal counterparts of global descriptors: the cases of chemical softness and hardness, J. Mol. Model. 24 (2018) 1–8, https://doi.org/10.1007/S00894-018- 3823-4/TABLES/3.[27] R.G. Parr, L.V. Szentpály, S. Liu, Electrophilicity Index, J. Am. Chem. Soc. 121 (1999) 1922–1924, https://doi.org/10.1021/JA983494X.[28] M.D. Hanwell, D.E. Curtis, D.C. Lonie, T. Vandermeerschd, E. Zurek, G.R. Hutchison, Avogadro: an advanced semantic chemical editor, visualisation, and analysis platform, J. Cheminform. 4 (2012) 1–17, https://doi.org/10.1186/ 1758-2946-4-17/FIGURES/14.[29] M.J. Frisch, J.A. Pople, J.S. Binkley, Self-consistent molecular orbital methods 25. Supplementary functions for Gaussian basis sets, J. Chem. Phys. 80 (7) (1984) 3265–3269.[30] D.C. Young, Computational Chemistry: A Practical Guide for Applying Techniques to Real-World Problems, 2001, Available from: www.wiley.com (accessed April 13, 2022).[31] S. Knani, M. Khalfaoui, M.A. Hachicha, M. Mathlouthi, A. Ben Lamine, Interpretation of psychophysics response curves using statistical physics, Food Chem. 151 (2014) 487–499, https://doi.org/10.1016/ j.foodchem.2013.11.114.[32] L. Sellaoui, E.C. Lima, G.L. Dotto, A. Ben Lamine, Adsorption of amoxicillin and paracetamol on modified activated carbons: equilibrium and positional entropy studies, J. Mol. Liq. 234 (2017) 375–381, doi: 10.1016/ j.molliq.2017.03.111.[33] D.S.P. Franco, J. Georgin, M.S. Netto, K. da Boit Martinello, L.F.O. Silva, Preparation of activated carbons from fruit residues for the removal of naproxen (NPX): analytical interpretation via statistical physical model, J. Mol. Liq. 356 (2022), https://doi.org/10.1016/J.MOLLIQ.2022.119021 119021.[34] X. Pang, L. Sellaoui, D. Franco, M.S. Netto, J. Georgin, G. Luiz Dotto, M.K. Abu Shayeb, H. Belmabrouk, A. Bonilla-Petriciolet, Z. Li, Preparation and characterisation of a novel mountain soursop seeds powder adsorbent and its application for the removal of crystal violet and methylene blue from aqueous solutions, Chem. Eng. J. 391 (2020), https://doi.org/10.1016/J. CEJ.2019.123617 123617.[35] L. Sellaoui, F. Dhaouadi, Z. Li, T.R.S. Cadaval, A.V. Igansi, L.A.A. Pinto, G.L. Dotto, A. Bonilla-Petriciolet, D. Pinto, Z. Chen, Implementation of a multilayer statistical physics model to interpret the adsorption of food dyes on a chitosan film, J. Environ. Chem. Eng. 9 (4) (2021) 105516.[36] H.A. Al-Yousef, B.M. Alotaibi, M.M. Alanazi, F. Aouaini, L. Sellaoui, A. BonillaPetriciolet, Theoretical assessment of the adsorption mechanism of ibuprofen, ampicillin, orange G and malachite green on biomass functionalised with plasma, J. Environ. Chem. Eng. 9 (2021), https://doi.org/10.1016/J. JECE.2020.104950 104950.[37] G.L. Dotto, L.A.A. Pinto, M.A. Hachicha, S. Knani, New physicochemical interpretations for the adsorption of food dyes on chitosan films using statistical physics treatment, Food Chem. 171 (2015) 1–7, https://doi.org/ 10.1016/J.FOODCHEM.2014.08.098.[38] É.C. Lima, M.H. Dehghani, A. Guleria, F. Sher, R.R. Karri, G.L. Dotto, H.N. Tran, Adsorption: fundamental aspects and applications of adsorption for effluent treatment, Green Technol. Defluoridation Water (2021) 41–88, https://doi.org/ 10.1016/B978-0-323-85768-0.00004-X.[39] P. Saha, S. Chowdhury, Insight Into Adsorption Thermodynamics, InTech, 2011.[40] M. Khalfaoui, A. Nakhli, C. Aguir, A. Omri, M.F. M’henni, A. Ben Lamine, Statistical thermodynamics of adsorption of dye DR75 onto natural materials and its modifications: double-layer model with two adsorption energies, Environ. Sci. Pollut. Res. 21 (2014) 3134–3144, doi: 10.1007/S11356-013- 2263-Z/FIGURES/10.[41] A. Nakhli, M. Khalfaoui, C. Aguir, M. Bergaoui, M.F. M’henni, A. Ben Lamine, Statistical physics studies of multilayer adsorption on solid surface: adsorption of basic blue 41 Dye onto functionalized Posidonia biomass, Sep. Sci. Technol. 49 (16) (2014) 2525–2533.[42] B. Rotenberg, A.J. Patel, D. Chandler, Molecular explanation for why talc surfaces can be both hydrophilic and hydrophobic, J. Am. Chem. Soc. 133 (2011) 20521–20527, https://doi.org/10.1021/JA208687A/SUPPL_FILE/ JA208687A_SI_001.PDF.[43] D.H. Bangham, The Gibbs adsorption equation and adsorption on solids, Trans. Faraday Soc. 33 (1937) 805–811, https://doi.org/10.1039/TF9373300805.[44] Y. Tan, M. Guo, Using surface free energy method to study the cohesion and adhesion of asphalt mastic, Constr. Build. Mater. 47 (2013) 254–260, https:// doi.org/10.1016/J.CONBUILDMAT.2013.05.067.[45] L. Sellaoui, S. Knani, A. Erto, M.A. Hachicha, A. Ben Lamine, Equilibrium isotherm simulation of tetrachlorethylene on activated carbon using the double layer model with two energies: steric and energetic interpretations, Fluid Phase Equilib. 408 (2016) 259–264, https://doi.org/10.1016/J. FLUID.2015.09.022.[46] K. Zhou, W. Ma, Z. Zeng, X. Ma, X. Xu, Y. Guo, H. Li, L. Li, Experimental and DFT study on the adsorption of VOCs on activated carbon/metal oxides composites, Chem. Eng. J. 372 (2019) 1122–1133, https://doi.org/10.1016/J. CEJ.2019.04.218.[47] S. Martinez, Inhibitory mechanism of mimosa tannin using molecular modeling and substitutional adsorption isotherms, Mater. Chem. Phys. 77 (2003) 97–102, https://doi.org/10.1016/S0254-0584(01)00569-7.[48] M. Sbizzaro, S. César Sampaio, R. Rinaldo dos Reis, F. de Assis Beraldi, D. Medina Rosa, C. Maria Branco de Freitas Maia, C. Saramago de Carvalho Marques dos Santos Cordovil, C. Tillvitz do Nascimento, E. Antonio da Silva, C. Eduardo Borba, Effect of production temperature in biochar properties from bamboo culm and its influences on atrazine adsorption from aqueous systems, J. Mol. Liq. 343 (2021) 117667, https://doi.org/10.1016/J. MOLLIQ.2021.117667.[49] G. Tan, W. Sun, Y. Xu, H. Wang, N. Xu, Sorption of mercury (II) and atrazine by biochar, modified biochars and biochar based activated carbon in aqueous solution, Bioresour. Technol. 211 (2016) 727–735, https://doi.org/10.1016/J. BIORTECH.2016.03.147.[50] X. Zhao, W. Ouyang, F. Hao, C. Lin, F. Wang, S. Han, X. Geng, Properties comparison of biochars from corn straw with different pretreatment and sorption behaviour of atrazine, Bioresour. Technol. 147 (2013) 338–344, https://doi.org/10.1016/J.BIORTECH.2013.08.042.[51] L.F. Cusioli, C.d.O. Bezerra, H.B. Quesada, A.T. Alves Baptista, L. Nishi, M.F. Vieira, R. Bergamasco, Modified Moringa oleifera Lam. Seed husks as low-cost biosorbent for atrazine removal, Environ. Technol. 42 (7) (2021) 1092–1103.[52] A. Alahabadi, G. Moussavi, Preparation, characterisation and atrazine adsorption potential of mesoporous carbonate-induced activated biochar (CAB) from Calligonum Comosum biomass: parametric experiments and kinetics, equilibrium and thermodynamic modeling, J. Mol. Liq. 242 (2017) 40–52, https://doi.org/10.1016/j.molliq.2017.06.116.[53] A. Wong, F.M. de Oliveira, C.R.T. Tarley, M. Del Pilar Taboada Sotomayor, Study on the cross-linked molecularly imprinted poly(methacrylic acid) and poly (acrylic acid) towards selective adsorption of diuron, React. Funct. Polym. 100 (2016) 26–36, https://doi.org/10.1016/j.reactfunctpolym.2016.01.006.[54] M. Zbair, M. Bottlinger, K. Ainassaari, S. Ojala, O. Stein, R.L. Keiski, M. Bensitel, R. Brahmi, Hydrothermal carbonization of Argan nut shell: functional mesoporous carbon with excellent performance in the adsorption of bisphenol A and diuron, Waste and Biomass Valorisation 11 (2020) 1565– 1584, https://doi.org/10.1007/S12649-018-00554-0/TABLES/5.[55] L.M. Ndjientcheu Yossa, S.K. Ouiminga, S.S. Sidibe, I.W.K. Ouedraogo, Synthesis of a cleaner potassium hydroxide-activated carbon from baobab seeds hulls and investigation of adsorption mechanisms for diuron: chemical activation as an alternative route for the preparation of activated carbon from baobab seeds hulls and adsorption of diuron, Sci. Afr. 9 (2020) e00476.[56] C.d.O. Bezerra, L.F. Cusioli, H.B. Quesada, L. Nishi, D. Mantovani, M.F. Vieira, R. Bergamasco, Assessment of the use of Moringa oleifera seed husks for removal of pesticide diuron from contaminated water, Environ. Technol. 41 (2) (2020) 191–201.367PesticidesDFT calculationsAtrazine and diuronAdsorption mechanismPublicationORIGINALMechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar.pdfMechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar.pdfArtículoapplication/pdf1540325https://repositorio.cuc.edu.co/bitstreams/77a29a99-7213-41a0-be75-ecdeb516be02/download3acf48f3b0885edc0fece50eba12574eMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-814828https://repositorio.cuc.edu.co/bitstreams/e548716c-71d7-4a68-8bc0-41964f2f52bf/download2f9959eaf5b71fae44bbf9ec84150c7aMD52TEXTMechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar.pdf.txtMechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar.pdf.txtExtracted texttext/plain54937https://repositorio.cuc.edu.co/bitstreams/e53e9eb3-fd00-44e6-b090-6df5c1921ffb/download104314cdca103d0751c95e7ff4f38669MD53THUMBNAILMechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar.pdf.jpgMechanistic insights and steric interpretations through statistical physics modelling and density functional theory calculations for the adsorption of the pesticides atrazine and diuron by Hovenia dulcis biochar.pdf.jpgGenerated Thumbnailimage/jpeg15298https://repositorio.cuc.edu.co/bitstreams/e88a8a89-204f-464c-98b7-351c96cc4f75/download187b622f2ea597a73fc7aba4b45782afMD5411323/10782oai:repositorio.cuc.edu.co:11323/107822024-09-17 12:49:31.825https://creativecommons.org/licenses/by-nc-nd/4.0/© 2022 Elsevier B.V. All rights reserved.open.accesshttps://repositorio.cuc.edu.coRepositorio de la Universidad de la Costa CUCrepdigital@cuc.edu.coTEEgT0JSQSAoVEFMIFkgQ09NTyBTRSBERUZJTkUgTcOBUyBBREVMQU5URSkgU0UgT1RPUkdBIEJBSk8gTE9TIFRFUk1JTk9TIERFIEVTVEEgTElDRU5DSUEgUMOaQkxJQ0EgREUgQ1JFQVRJVkUgQ09NTU9OUyAo4oCcTFBDQ+KAnSBPIOKAnExJQ0VOQ0lB4oCdKS4gTEEgT0JSQSBFU1TDgSBQUk9URUdJREEgUE9SIERFUkVDSE9TIERFIEFVVE9SIFkvVSBPVFJBUyBMRVlFUyBBUExJQ0FCTEVTLiBRVUVEQSBQUk9ISUJJRE8gQ1VBTFFVSUVSIFVTTyBRVUUgU0UgSEFHQSBERSBMQSBPQlJBIFFVRSBOTyBDVUVOVEUgQ09OIExBIEFVVE9SSVpBQ0nDk04gUEVSVElORU5URSBERSBDT05GT1JNSURBRCBDT04gTE9TIFTDiVJNSU5PUyBERSBFU1RBIExJQ0VOQ0lBIFkgREUgTEEgTEVZIERFIERFUkVDSE8gREUgQVVUT1IuCgpNRURJQU5URSBFTCBFSkVSQ0lDSU8gREUgQ1VBTFFVSUVSQSBERSBMT1MgREVSRUNIT1MgUVVFIFNFIE9UT1JHQU4gRU4gRVNUQSBMSUNFTkNJQSwgVVNURUQgQUNFUFRBIFkgQUNVRVJEQSBRVUVEQVIgT0JMSUdBRE8gRU4gTE9TIFRFUk1JTk9TIFFVRSBTRSBTRcORQUxBTiBFTiBFTExBLiBFTCBMSUNFTkNJQU5URSBDT05DRURFIEEgVVNURUQgTE9TIERFUkVDSE9TIENPTlRFTklET1MgRU4gRVNUQSBMSUNFTkNJQSBDT05ESUNJT05BRE9TIEEgTEEgQUNFUFRBQ0nDk04gREUgU1VTIFRFUk1JTk9TIFkgQ09ORElDSU9ORVMuCjEuIERlZmluaWNpb25lcwoKYS4JT2JyYSBDb2xlY3RpdmEgZXMgdW5hIG9icmEsIHRhbCBjb21vIHVuYSBwdWJsaWNhY2nDs24gcGVyacOzZGljYSwgdW5hIGFudG9sb2fDrWEsIG8gdW5hIGVuY2ljbG9wZWRpYSwgZW4gbGEgcXVlIGxhIG9icmEgZW4gc3UgdG90YWxpZGFkLCBzaW4gbW9kaWZpY2FjacOzbiBhbGd1bmEsIGp1bnRvIGNvbiB1biBncnVwbyBkZSBvdHJhcyBjb250cmlidWNpb25lcyBxdWUgY29uc3RpdHV5ZW4gb2JyYXMgc2VwYXJhZGFzIGUgaW5kZXBlbmRpZW50ZXMgZW4gc8OtIG1pc21hcywgc2UgaW50ZWdyYW4gZW4gdW4gdG9kbyBjb2xlY3Rpdm8uIFVuYSBPYnJhIHF1ZSBjb25zdGl0dXllIHVuYSBvYnJhIGNvbGVjdGl2YSBubyBzZSBjb25zaWRlcmFyw6EgdW5hIE9icmEgRGVyaXZhZGEgKGNvbW8gc2UgZGVmaW5lIGFiYWpvKSBwYXJhIGxvcyBwcm9ww7NzaXRvcyBkZSBlc3RhIGxpY2VuY2lhLiBhcXVlbGxhIHByb2R1Y2lkYSBwb3IgdW4gZ3J1cG8gZGUgYXV0b3JlcywgZW4gcXVlIGxhIE9icmEgc2UgZW5jdWVudHJhIHNpbiBtb2RpZmljYWNpb25lcywganVudG8gY29uIHVuYSBjaWVydGEgY2FudGlkYWQgZGUgb3RyYXMgY29udHJpYnVjaW9uZXMsIHF1ZSBjb25zdGl0dXllbiBlbiBzw60gbWlzbW9zIHRyYWJham9zIHNlcGFyYWRvcyBlIGluZGVwZW5kaWVudGVzLCBxdWUgc29uIGludGVncmFkb3MgYWwgdG9kbyBjb2xlY3Rpdm8sIHRhbGVzIGNvbW8gcHVibGljYWNpb25lcyBwZXJpw7NkaWNhcywgYW50b2xvZ8OtYXMgbyBlbmNpY2xvcGVkaWFzLgoKYi4JT2JyYSBEZXJpdmFkYSBzaWduaWZpY2EgdW5hIG9icmEgYmFzYWRhIGVuIGxhIG9icmEgb2JqZXRvIGRlIGVzdGEgbGljZW5jaWEgbyBlbiDDqXN0YSB5IG90cmFzIG9icmFzIHByZWV4aXN0ZW50ZXMsIHRhbGVzIGNvbW8gdHJhZHVjY2lvbmVzLCBhcnJlZ2xvcyBtdXNpY2FsZXMsIGRyYW1hdGl6YWNpb25lcywg4oCcZmljY2lvbmFsaXphY2lvbmVz4oCdLCB2ZXJzaW9uZXMgcGFyYSBjaW5lLCDigJxncmFiYWNpb25lcyBkZSBzb25pZG/igJ0sIHJlcHJvZHVjY2lvbmVzIGRlIGFydGUsIHJlc8O6bWVuZXMsIGNvbmRlbnNhY2lvbmVzLCBvIGN1YWxxdWllciBvdHJhIGVuIGxhIHF1ZSBsYSBvYnJhIHB1ZWRhIHNlciB0cmFuc2Zvcm1hZGEsIGNhbWJpYWRhIG8gYWRhcHRhZGEsIGV4Y2VwdG8gYXF1ZWxsYXMgcXVlIGNvbnN0aXR1eWFuIHVuYSBvYnJhIGNvbGVjdGl2YSwgbGFzIHF1ZSBubyBzZXLDoW4gY29uc2lkZXJhZGFzIHVuYSBvYnJhIGRlcml2YWRhIHBhcmEgZWZlY3RvcyBkZSBlc3RhIGxpY2VuY2lhLiAoUGFyYSBldml0YXIgZHVkYXMsIGVuIGVsIGNhc28gZGUgcXVlIGxhIE9icmEgc2VhIHVuYSBjb21wb3NpY2nDs24gbXVzaWNhbCBvIHVuYSBncmFiYWNpw7NuIHNvbm9yYSwgcGFyYSBsb3MgZWZlY3RvcyBkZSBlc3RhIExpY2VuY2lhIGxhIHNpbmNyb25pemFjacOzbiB0ZW1wb3JhbCBkZSBsYSBPYnJhIGNvbiB1bmEgaW1hZ2VuIGVuIG1vdmltaWVudG8gc2UgY29uc2lkZXJhcsOhIHVuYSBPYnJhIERlcml2YWRhIHBhcmEgbG9zIGZpbmVzIGRlIGVzdGEgbGljZW5jaWEpLgoKYy4JTGljZW5jaWFudGUsIGVzIGVsIGluZGl2aWR1byBvIGxhIGVudGlkYWQgdGl0dWxhciBkZSBsb3MgZGVyZWNob3MgZGUgYXV0b3IgcXVlIG9mcmVjZSBsYSBPYnJhIGVuIGNvbmZvcm1pZGFkIGNvbiBsYXMgY29uZGljaW9uZXMgZGUgZXN0YSBMaWNlbmNpYS4KCmQuCUF1dG9yIG9yaWdpbmFsLCBlcyBlbCBpbmRpdmlkdW8gcXVlIGNyZcOzIGxhIE9icmEuCgplLglPYnJhLCBlcyBhcXVlbGxhIG9icmEgc3VzY2VwdGlibGUgZGUgcHJvdGVjY2nDs24gcG9yIGVsIHLDqWdpbWVuIGRlIERlcmVjaG8gZGUgQXV0b3IgeSBxdWUgZXMgb2ZyZWNpZGEgZW4gbG9zIHTDqXJtaW5vcyBkZSBlc3RhIGxpY2VuY2lhCgpmLglVc3RlZCwgZXMgZWwgaW5kaXZpZHVvIG8gbGEgZW50aWRhZCBxdWUgZWplcmNpdGEgbG9zIGRlcmVjaG9zIG90b3JnYWRvcyBhbCBhbXBhcm8gZGUgZXN0YSBMaWNlbmNpYSB5IHF1ZSBjb24gYW50ZXJpb3JpZGFkIG5vIGhhIHZpb2xhZG8gbGFzIGNvbmRpY2lvbmVzIGRlIGxhIG1pc21hIHJlc3BlY3RvIGEgbGEgT2JyYSwgbyBxdWUgaGF5YSBvYnRlbmlkbyBhdXRvcml6YWNpw7NuIGV4cHJlc2EgcG9yIHBhcnRlIGRlbCBMaWNlbmNpYW50ZSBwYXJhIGVqZXJjZXIgbG9zIGRlcmVjaG9zIGFsIGFtcGFybyBkZSBlc3RhIExpY2VuY2lhIHBlc2UgYSB1bmEgdmlvbGFjacOzbiBhbnRlcmlvci4KCjIuIERlcmVjaG9zIGRlIFVzb3MgSG9ucmFkb3MgeSBleGNlcGNpb25lcyBMZWdhbGVzLgpOYWRhIGVuIGVzdGEgTGljZW5jaWEgcG9kcsOhIHNlciBpbnRlcnByZXRhZG8gY29tbyB1bmEgZGlzbWludWNpw7NuLCBsaW1pdGFjacOzbiBvIHJlc3RyaWNjacOzbiBkZSBsb3MgZGVyZWNob3MgZGVyaXZhZG9zIGRlbCB1c28gaG9ucmFkbyB5IG90cmFzIGxpbWl0YWNpb25lcyBvIGV4Y2VwY2lvbmVzIGEgbG9zIGRlcmVjaG9zIGRlbCBhdXRvciBiYWpvIGVsIHLDqWdpbWVuIGxlZ2FsIHZpZ2VudGUgbyBkZXJpdmFkbyBkZSBjdWFscXVpZXIgb3RyYSBub3JtYSBxdWUgc2UgbGUgYXBsaXF1ZS4KCjMuIENvbmNlc2nDs24gZGUgbGEgTGljZW5jaWEuCkJham8gbG9zIHTDqXJtaW5vcyB5IGNvbmRpY2lvbmVzIGRlIGVzdGEgTGljZW5jaWEsIGVsIExpY2VuY2lhbnRlIG90b3JnYSBhIFVzdGVkIHVuYSBsaWNlbmNpYSBtdW5kaWFsLCBsaWJyZSBkZSByZWdhbMOtYXMsIG5vIGV4Y2x1c2l2YSB5IHBlcnBldHVhIChkdXJhbnRlIHRvZG8gZWwgcGVyw61vZG8gZGUgdmlnZW5jaWEgZGUgbG9zIGRlcmVjaG9zIGRlIGF1dG9yKSBwYXJhIGVqZXJjZXIgZXN0b3MgZGVyZWNob3Mgc29icmUgbGEgT2JyYSB0YWwgeSBjb21vIHNlIGluZGljYSBhIGNvbnRpbnVhY2nDs246CgphLglSZXByb2R1Y2lyIGxhIE9icmEsIGluY29ycG9yYXIgbGEgT2JyYSBlbiB1bmEgbyBtw6FzIE9icmFzIENvbGVjdGl2YXMsIHkgcmVwcm9kdWNpciBsYSBPYnJhIGluY29ycG9yYWRhIGVuIGxhcyBPYnJhcyBDb2xlY3RpdmFzLgoKYi4JRGlzdHJpYnVpciBjb3BpYXMgbyBmb25vZ3JhbWFzIGRlIGxhcyBPYnJhcywgZXhoaWJpcmxhcyBww7pibGljYW1lbnRlLCBlamVjdXRhcmxhcyBww7pibGljYW1lbnRlIHkvbyBwb25lcmxhcyBhIGRpc3Bvc2ljacOzbiBww7pibGljYSwgaW5jbHV5w6luZG9sYXMgY29tbyBpbmNvcnBvcmFkYXMgZW4gT2JyYXMgQ29sZWN0aXZhcywgc2Vnw7puIGNvcnJlc3BvbmRhLgoKYy4JRGlzdHJpYnVpciBjb3BpYXMgZGUgbGFzIE9icmFzIERlcml2YWRhcyBxdWUgc2UgZ2VuZXJlbiwgZXhoaWJpcmxhcyBww7pibGljYW1lbnRlLCBlamVjdXRhcmxhcyBww7pibGljYW1lbnRlIHkvbyBwb25lcmxhcyBhIGRpc3Bvc2ljacOzbiBww7pibGljYS4KTG9zIGRlcmVjaG9zIG1lbmNpb25hZG9zIGFudGVyaW9ybWVudGUgcHVlZGVuIHNlciBlamVyY2lkb3MgZW4gdG9kb3MgbG9zIG1lZGlvcyB5IGZvcm1hdG9zLCBhY3R1YWxtZW50ZSBjb25vY2lkb3MgbyBxdWUgc2UgaW52ZW50ZW4gZW4gZWwgZnV0dXJvLiBMb3MgZGVyZWNob3MgYW50ZXMgbWVuY2lvbmFkb3MgaW5jbHV5ZW4gZWwgZGVyZWNobyBhIHJlYWxpemFyIGRpY2hhcyBtb2RpZmljYWNpb25lcyBlbiBsYSBtZWRpZGEgcXVlIHNlYW4gdMOpY25pY2FtZW50ZSBuZWNlc2FyaWFzIHBhcmEgZWplcmNlciBsb3MgZGVyZWNob3MgZW4gb3RybyBtZWRpbyBvIGZvcm1hdG9zLCBwZXJvIGRlIG90cmEgbWFuZXJhIHVzdGVkIG5vIGVzdMOhIGF1dG9yaXphZG8gcGFyYSByZWFsaXphciBvYnJhcyBkZXJpdmFkYXMuIFRvZG9zIGxvcyBkZXJlY2hvcyBubyBvdG9yZ2Fkb3MgZXhwcmVzYW1lbnRlIHBvciBlbCBMaWNlbmNpYW50ZSBxdWVkYW4gcG9yIGVzdGUgbWVkaW8gcmVzZXJ2YWRvcywgaW5jbHV5ZW5kbyBwZXJvIHNpbiBsaW1pdGFyc2UgYSBhcXVlbGxvcyBxdWUgc2UgbWVuY2lvbmFuIGVuIGxhcyBzZWNjaW9uZXMgNChkKSB5IDQoZSkuCgo0LiBSZXN0cmljY2lvbmVzLgpMYSBsaWNlbmNpYSBvdG9yZ2FkYSBlbiBsYSBhbnRlcmlvciBTZWNjacOzbiAzIGVzdMOhIGV4cHJlc2FtZW50ZSBzdWpldGEgeSBsaW1pdGFkYSBwb3IgbGFzIHNpZ3VpZW50ZXMgcmVzdHJpY2Npb25lczoKCmEuCVVzdGVkIHB1ZWRlIGRpc3RyaWJ1aXIsIGV4aGliaXIgcMO6YmxpY2FtZW50ZSwgZWplY3V0YXIgcMO6YmxpY2FtZW50ZSwgbyBwb25lciBhIGRpc3Bvc2ljacOzbiBww7pibGljYSBsYSBPYnJhIHPDs2xvIGJham8gbGFzIGNvbmRpY2lvbmVzIGRlIGVzdGEgTGljZW5jaWEsIHkgVXN0ZWQgZGViZSBpbmNsdWlyIHVuYSBjb3BpYSBkZSBlc3RhIGxpY2VuY2lhIG8gZGVsIElkZW50aWZpY2Fkb3IgVW5pdmVyc2FsIGRlIFJlY3Vyc29zIGRlIGxhIG1pc21hIGNvbiBjYWRhIGNvcGlhIGRlIGxhIE9icmEgcXVlIGRpc3RyaWJ1eWEsIGV4aGliYSBww7pibGljYW1lbnRlLCBlamVjdXRlIHDDumJsaWNhbWVudGUgbyBwb25nYSBhIGRpc3Bvc2ljacOzbiBww7pibGljYS4gTm8gZXMgcG9zaWJsZSBvZnJlY2VyIG8gaW1wb25lciBuaW5ndW5hIGNvbmRpY2nDs24gc29icmUgbGEgT2JyYSBxdWUgYWx0ZXJlIG8gbGltaXRlIGxhcyBjb25kaWNpb25lcyBkZSBlc3RhIExpY2VuY2lhIG8gZWwgZWplcmNpY2lvIGRlIGxvcyBkZXJlY2hvcyBkZSBsb3MgZGVzdGluYXRhcmlvcyBvdG9yZ2Fkb3MgZW4gZXN0ZSBkb2N1bWVudG8uIE5vIGVzIHBvc2libGUgc3VibGljZW5jaWFyIGxhIE9icmEuIFVzdGVkIGRlYmUgbWFudGVuZXIgaW50YWN0b3MgdG9kb3MgbG9zIGF2aXNvcyBxdWUgaGFnYW4gcmVmZXJlbmNpYSBhIGVzdGEgTGljZW5jaWEgeSBhIGxhIGNsw6F1c3VsYSBkZSBsaW1pdGFjacOzbiBkZSBnYXJhbnTDrWFzLiBVc3RlZCBubyBwdWVkZSBkaXN0cmlidWlyLCBleGhpYmlyIHDDumJsaWNhbWVudGUsIGVqZWN1dGFyIHDDumJsaWNhbWVudGUsIG8gcG9uZXIgYSBkaXNwb3NpY2nDs24gcMO6YmxpY2EgbGEgT2JyYSBjb24gYWxndW5hIG1lZGlkYSB0ZWNub2zDs2dpY2EgcXVlIGNvbnRyb2xlIGVsIGFjY2VzbyBvIGxhIHV0aWxpemFjacOzbiBkZSBlbGxhIGRlIHVuYSBmb3JtYSBxdWUgc2VhIGluY29uc2lzdGVudGUgY29uIGxhcyBjb25kaWNpb25lcyBkZSBlc3RhIExpY2VuY2lhLiBMbyBhbnRlcmlvciBzZSBhcGxpY2EgYSBsYSBPYnJhIGluY29ycG9yYWRhIGEgdW5hIE9icmEgQ29sZWN0aXZhLCBwZXJvIGVzdG8gbm8gZXhpZ2UgcXVlIGxhIE9icmEgQ29sZWN0aXZhIGFwYXJ0ZSBkZSBsYSBvYnJhIG1pc21hIHF1ZWRlIHN1amV0YSBhIGxhcyBjb25kaWNpb25lcyBkZSBlc3RhIExpY2VuY2lhLiBTaSBVc3RlZCBjcmVhIHVuYSBPYnJhIENvbGVjdGl2YSwgcHJldmlvIGF2aXNvIGRlIGN1YWxxdWllciBMaWNlbmNpYW50ZSBkZWJlLCBlbiBsYSBtZWRpZGEgZGUgbG8gcG9zaWJsZSwgZWxpbWluYXIgZGUgbGEgT2JyYSBDb2xlY3RpdmEgY3VhbHF1aWVyIHJlZmVyZW5jaWEgYSBkaWNobyBMaWNlbmNpYW50ZSBvIGFsIEF1dG9yIE9yaWdpbmFsLCBzZWfDum4gbG8gc29saWNpdGFkbyBwb3IgZWwgTGljZW5jaWFudGUgeSBjb25mb3JtZSBsbyBleGlnZSBsYSBjbMOhdXN1bGEgNChjKS4KCmIuCVVzdGVkIG5vIHB1ZWRlIGVqZXJjZXIgbmluZ3VubyBkZSBsb3MgZGVyZWNob3MgcXVlIGxlIGhhbiBzaWRvIG90b3JnYWRvcyBlbiBsYSBTZWNjacOzbiAzIHByZWNlZGVudGUgZGUgbW9kbyBxdWUgZXN0w6luIHByaW5jaXBhbG1lbnRlIGRlc3RpbmFkb3MgbyBkaXJlY3RhbWVudGUgZGlyaWdpZG9zIGEgY29uc2VndWlyIHVuIHByb3ZlY2hvIGNvbWVyY2lhbCBvIHVuYSBjb21wZW5zYWNpw7NuIG1vbmV0YXJpYSBwcml2YWRhLiBFbCBpbnRlcmNhbWJpbyBkZSBsYSBPYnJhIHBvciBvdHJhcyBvYnJhcyBwcm90ZWdpZGFzIHBvciBkZXJlY2hvcyBkZSBhdXRvciwgeWEgc2VhIGEgdHJhdsOpcyBkZSB1biBzaXN0ZW1hIHBhcmEgY29tcGFydGlyIGFyY2hpdm9zIGRpZ2l0YWxlcyAoZGlnaXRhbCBmaWxlLXNoYXJpbmcpIG8gZGUgY3VhbHF1aWVyIG90cmEgbWFuZXJhIG5vIHNlcsOhIGNvbnNpZGVyYWRvIGNvbW8gZXN0YXIgZGVzdGluYWRvIHByaW5jaXBhbG1lbnRlIG8gZGlyaWdpZG8gZGlyZWN0YW1lbnRlIGEgY29uc2VndWlyIHVuIHByb3ZlY2hvIGNvbWVyY2lhbCBvIHVuYSBjb21wZW5zYWNpw7NuIG1vbmV0YXJpYSBwcml2YWRhLCBzaWVtcHJlIHF1ZSBubyBzZSByZWFsaWNlIHVuIHBhZ28gbWVkaWFudGUgdW5hIGNvbXBlbnNhY2nDs24gbW9uZXRhcmlhIGVuIHJlbGFjacOzbiBjb24gZWwgaW50ZXJjYW1iaW8gZGUgb2JyYXMgcHJvdGVnaWRhcyBwb3IgZWwgZGVyZWNobyBkZSBhdXRvci4KCmMuCVNpIHVzdGVkIGRpc3RyaWJ1eWUsIGV4aGliZSBww7pibGljYW1lbnRlLCBlamVjdXRhIHDDumJsaWNhbWVudGUgbyBlamVjdXRhIHDDumJsaWNhbWVudGUgZW4gZm9ybWEgZGlnaXRhbCBsYSBPYnJhIG8gY3VhbHF1aWVyIE9icmEgRGVyaXZhZGEgdSBPYnJhIENvbGVjdGl2YSwgVXN0ZWQgZGViZSBtYW50ZW5lciBpbnRhY3RhIHRvZGEgbGEgaW5mb3JtYWNpw7NuIGRlIGRlcmVjaG8gZGUgYXV0b3IgZGUgbGEgT2JyYSB5IHByb3BvcmNpb25hciwgZGUgZm9ybWEgcmF6b25hYmxlIHNlZ8O6biBlbCBtZWRpbyBvIG1hbmVyYSBxdWUgVXN0ZWQgZXN0w6kgdXRpbGl6YW5kbzogKGkpIGVsIG5vbWJyZSBkZWwgQXV0b3IgT3JpZ2luYWwgc2kgZXN0w6EgcHJvdmlzdG8gKG8gc2V1ZMOzbmltbywgc2kgZnVlcmUgYXBsaWNhYmxlKSwgeS9vIChpaSkgZWwgbm9tYnJlIGRlIGxhIHBhcnRlIG8gbGFzIHBhcnRlcyBxdWUgZWwgQXV0b3IgT3JpZ2luYWwgeS9vIGVsIExpY2VuY2lhbnRlIGh1YmllcmVuIGRlc2lnbmFkbyBwYXJhIGxhIGF0cmlidWNpw7NuICh2LmcuLCB1biBpbnN0aXR1dG8gcGF0cm9jaW5hZG9yLCBlZGl0b3JpYWwsIHB1YmxpY2FjacOzbikgZW4gbGEgaW5mb3JtYWNpw7NuIGRlIGxvcyBkZXJlY2hvcyBkZSBhdXRvciBkZWwgTGljZW5jaWFudGUsIHTDqXJtaW5vcyBkZSBzZXJ2aWNpb3MgbyBkZSBvdHJhcyBmb3JtYXMgcmF6b25hYmxlczsgZWwgdMOtdHVsbyBkZSBsYSBPYnJhIHNpIGVzdMOhIHByb3Zpc3RvOyBlbiBsYSBtZWRpZGEgZGUgbG8gcmF6b25hYmxlbWVudGUgZmFjdGlibGUgeSwgc2kgZXN0w6EgcHJvdmlzdG8sIGVsIElkZW50aWZpY2Fkb3IgVW5pZm9ybWUgZGUgUmVjdXJzb3MgKFVuaWZvcm0gUmVzb3VyY2UgSWRlbnRpZmllcikgcXVlIGVsIExpY2VuY2lhbnRlIGVzcGVjaWZpY2EgcGFyYSBzZXIgYXNvY2lhZG8gY29uIGxhIE9icmEsIHNhbHZvIHF1ZSB0YWwgVVJJIG5vIHNlIHJlZmllcmEgYSBsYSBub3RhIHNvYnJlIGxvcyBkZXJlY2hvcyBkZSBhdXRvciBvIGEgbGEgaW5mb3JtYWNpw7NuIHNvYnJlIGVsIGxpY2VuY2lhbWllbnRvIGRlIGxhIE9icmE7IHkgZW4gZWwgY2FzbyBkZSB1bmEgT2JyYSBEZXJpdmFkYSwgYXRyaWJ1aXIgZWwgY3LDqWRpdG8gaWRlbnRpZmljYW5kbyBlbCB1c28gZGUgbGEgT2JyYSBlbiBsYSBPYnJhIERlcml2YWRhICh2LmcuLCAiVHJhZHVjY2nDs24gRnJhbmNlc2EgZGUgbGEgT2JyYSBkZWwgQXV0b3IgT3JpZ2luYWwsIiBvICJHdWnDs24gQ2luZW1hdG9ncsOhZmljbyBiYXNhZG8gZW4gbGEgT2JyYSBvcmlnaW5hbCBkZWwgQXV0b3IgT3JpZ2luYWwiKS4gVGFsIGNyw6lkaXRvIHB1ZWRlIHNlciBpbXBsZW1lbnRhZG8gZGUgY3VhbHF1aWVyIGZvcm1hIHJhem9uYWJsZTsgZW4gZWwgY2Fzbywgc2luIGVtYmFyZ28sIGRlIE9icmFzIERlcml2YWRhcyB1IE9icmFzIENvbGVjdGl2YXMsIHRhbCBjcsOpZGl0byBhcGFyZWNlcsOhLCBjb21vIG3DrW5pbW8sIGRvbmRlIGFwYXJlY2UgZWwgY3LDqWRpdG8gZGUgY3VhbHF1aWVyIG90cm8gYXV0b3IgY29tcGFyYWJsZSB5IGRlIHVuYSBtYW5lcmEsIGFsIG1lbm9zLCB0YW4gZGVzdGFjYWRhIGNvbW8gZWwgY3LDqWRpdG8gZGUgb3RybyBhdXRvciBjb21wYXJhYmxlLgoKZC4JUGFyYSBldml0YXIgdG9kYSBjb25mdXNpw7NuLCBlbCBMaWNlbmNpYW50ZSBhY2xhcmEgcXVlLCBjdWFuZG8gbGEgb2JyYSBlcyB1bmEgY29tcG9zaWNpw7NuIG11c2ljYWw6CgppLglSZWdhbMOtYXMgcG9yIGludGVycHJldGFjacOzbiB5IGVqZWN1Y2nDs24gYmFqbyBsaWNlbmNpYXMgZ2VuZXJhbGVzLiBFbCBMaWNlbmNpYW50ZSBzZSByZXNlcnZhIGVsIGRlcmVjaG8gZXhjbHVzaXZvIGRlIGF1dG9yaXphciBsYSBlamVjdWNpw7NuIHDDumJsaWNhIG8gbGEgZWplY3VjacOzbiBww7pibGljYSBkaWdpdGFsIGRlIGxhIG9icmEgeSBkZSByZWNvbGVjdGFyLCBzZWEgaW5kaXZpZHVhbG1lbnRlIG8gYSB0cmF2w6lzIGRlIHVuYSBzb2NpZWRhZCBkZSBnZXN0acOzbiBjb2xlY3RpdmEgZGUgZGVyZWNob3MgZGUgYXV0b3IgeSBkZXJlY2hvcyBjb25leG9zIChwb3IgZWplbXBsbywgU0FZQ08pLCBsYXMgcmVnYWzDrWFzIHBvciBsYSBlamVjdWNpw7NuIHDDumJsaWNhIG8gcG9yIGxhIGVqZWN1Y2nDs24gcMO6YmxpY2EgZGlnaXRhbCBkZSBsYSBvYnJhIChwb3IgZWplbXBsbyBXZWJjYXN0KSBsaWNlbmNpYWRhIGJham8gbGljZW5jaWFzIGdlbmVyYWxlcywgc2kgbGEgaW50ZXJwcmV0YWNpw7NuIG8gZWplY3VjacOzbiBkZSBsYSBvYnJhIGVzdMOhIHByaW1vcmRpYWxtZW50ZSBvcmllbnRhZGEgcG9yIG8gZGlyaWdpZGEgYSBsYSBvYnRlbmNpw7NuIGRlIHVuYSB2ZW50YWphIGNvbWVyY2lhbCBvIHVuYSBjb21wZW5zYWNpw7NuIG1vbmV0YXJpYSBwcml2YWRhLgoKaWkuCVJlZ2Fsw61hcyBwb3IgRm9ub2dyYW1hcy4gRWwgTGljZW5jaWFudGUgc2UgcmVzZXJ2YSBlbCBkZXJlY2hvIGV4Y2x1c2l2byBkZSByZWNvbGVjdGFyLCBpbmRpdmlkdWFsbWVudGUgbyBhIHRyYXbDqXMgZGUgdW5hIHNvY2llZGFkIGRlIGdlc3Rpw7NuIGNvbGVjdGl2YSBkZSBkZXJlY2hvcyBkZSBhdXRvciB5IGRlcmVjaG9zIGNvbmV4b3MgKHBvciBlamVtcGxvLCBsb3MgY29uc2FncmFkb3MgcG9yIGxhIFNBWUNPKSwgdW5hIGFnZW5jaWEgZGUgZGVyZWNob3MgbXVzaWNhbGVzIG8gYWxnw7puIGFnZW50ZSBkZXNpZ25hZG8sIGxhcyByZWdhbMOtYXMgcG9yIGN1YWxxdWllciBmb25vZ3JhbWEgcXVlIFVzdGVkIGNyZWUgYSBwYXJ0aXIgZGUgbGEgb2JyYSAo4oCcdmVyc2nDs24gY292ZXLigJ0pIHkgZGlzdHJpYnV5YSwgZW4gbG9zIHTDqXJtaW5vcyBkZWwgcsOpZ2ltZW4gZGUgZGVyZWNob3MgZGUgYXV0b3IsIHNpIGxhIGNyZWFjacOzbiBvIGRpc3RyaWJ1Y2nDs24gZGUgZXNhIHZlcnNpw7NuIGNvdmVyIGVzdMOhIHByaW1vcmRpYWxtZW50ZSBkZXN0aW5hZGEgbyBkaXJpZ2lkYSBhIG9idGVuZXIgdW5hIHZlbnRhamEgY29tZXJjaWFsIG8gdW5hIGNvbXBlbnNhY2nDs24gbW9uZXRhcmlhIHByaXZhZGEuCgplLglHZXN0acOzbiBkZSBEZXJlY2hvcyBkZSBBdXRvciBzb2JyZSBJbnRlcnByZXRhY2lvbmVzIHkgRWplY3VjaW9uZXMgRGlnaXRhbGVzIChXZWJDYXN0aW5nKS4gUGFyYSBldml0YXIgdG9kYSBjb25mdXNpw7NuLCBlbCBMaWNlbmNpYW50ZSBhY2xhcmEgcXVlLCBjdWFuZG8gbGEgb2JyYSBzZWEgdW4gZm9ub2dyYW1hLCBlbCBMaWNlbmNpYW50ZSBzZSByZXNlcnZhIGVsIGRlcmVjaG8gZXhjbHVzaXZvIGRlIGF1dG9yaXphciBsYSBlamVjdWNpw7NuIHDDumJsaWNhIGRpZ2l0YWwgZGUgbGEgb2JyYSAocG9yIGVqZW1wbG8sIHdlYmNhc3QpIHkgZGUgcmVjb2xlY3RhciwgaW5kaXZpZHVhbG1lbnRlIG8gYSB0cmF2w6lzIGRlIHVuYSBzb2NpZWRhZCBkZSBnZXN0acOzbiBjb2xlY3RpdmEgZGUgZGVyZWNob3MgZGUgYXV0b3IgeSBkZXJlY2hvcyBjb25leG9zIChwb3IgZWplbXBsbywgQUNJTlBSTyksIGxhcyByZWdhbMOtYXMgcG9yIGxhIGVqZWN1Y2nDs24gcMO6YmxpY2EgZGlnaXRhbCBkZSBsYSBvYnJhIChwb3IgZWplbXBsbywgd2ViY2FzdCksIHN1amV0YSBhIGxhcyBkaXNwb3NpY2lvbmVzIGFwbGljYWJsZXMgZGVsIHLDqWdpbWVuIGRlIERlcmVjaG8gZGUgQXV0b3IsIHNpIGVzdGEgZWplY3VjacOzbiBww7pibGljYSBkaWdpdGFsIGVzdMOhIHByaW1vcmRpYWxtZW50ZSBkaXJpZ2lkYSBhIG9idGVuZXIgdW5hIHZlbnRhamEgY29tZXJjaWFsIG8gdW5hIGNvbXBlbnNhY2nDs24gbW9uZXRhcmlhIHByaXZhZGEuCgo1LiBSZXByZXNlbnRhY2lvbmVzLCBHYXJhbnTDrWFzIHkgTGltaXRhY2lvbmVzIGRlIFJlc3BvbnNhYmlsaWRhZC4KQSBNRU5PUyBRVUUgTEFTIFBBUlRFUyBMTyBBQ09SREFSQU4gREUgT1RSQSBGT1JNQSBQT1IgRVNDUklUTywgRUwgTElDRU5DSUFOVEUgT0ZSRUNFIExBIE9CUkEgKEVOIEVMIEVTVEFETyBFTiBFTCBRVUUgU0UgRU5DVUVOVFJBKSDigJxUQUwgQ1VBTOKAnSwgU0lOIEJSSU5EQVIgR0FSQU5Uw41BUyBERSBDTEFTRSBBTEdVTkEgUkVTUEVDVE8gREUgTEEgT0JSQSwgWUEgU0VBIEVYUFJFU0EsIElNUEzDjUNJVEEsIExFR0FMIE8gQ1VBTFFVSUVSQSBPVFJBLCBJTkNMVVlFTkRPLCBTSU4gTElNSVRBUlNFIEEgRUxMQVMsIEdBUkFOVMONQVMgREUgVElUVUxBUklEQUQsIENPTUVSQ0lBQklMSURBRCwgQURBUFRBQklMSURBRCBPIEFERUNVQUNJw5NOIEEgUFJPUMOTU0lUTyBERVRFUk1JTkFETywgQVVTRU5DSUEgREUgSU5GUkFDQ0nDk04sIERFIEFVU0VOQ0lBIERFIERFRkVDVE9TIExBVEVOVEVTIE8gREUgT1RSTyBUSVBPLCBPIExBIFBSRVNFTkNJQSBPIEFVU0VOQ0lBIERFIEVSUk9SRVMsIFNFQU4gTyBOTyBERVNDVUJSSUJMRVMgKFBVRURBTiBPIE5PIFNFUiBFU1RPUyBERVNDVUJJRVJUT1MpLiBBTEdVTkFTIEpVUklTRElDQ0lPTkVTIE5PIFBFUk1JVEVOIExBIEVYQ0xVU0nDk04gREUgR0FSQU5Uw41BUyBJTVBMw41DSVRBUywgRU4gQ1VZTyBDQVNPIEVTVEEgRVhDTFVTScOTTiBQVUVERSBOTyBBUExJQ0FSU0UgQSBVU1RFRC4KCjYuIExpbWl0YWNpw7NuIGRlIHJlc3BvbnNhYmlsaWRhZC4KQSBNRU5PUyBRVUUgTE8gRVhJSkEgRVhQUkVTQU1FTlRFIExBIExFWSBBUExJQ0FCTEUsIEVMIExJQ0VOQ0lBTlRFIE5PIFNFUsOBIFJFU1BPTlNBQkxFIEFOVEUgVVNURUQgUE9SIERBw5FPIEFMR1VOTywgU0VBIFBPUiBSRVNQT05TQUJJTElEQUQgRVhUUkFDT05UUkFDVFVBTCwgUFJFQ09OVFJBQ1RVQUwgTyBDT05UUkFDVFVBTCwgT0JKRVRJVkEgTyBTVUJKRVRJVkEsIFNFIFRSQVRFIERFIERBw5FPUyBNT1JBTEVTIE8gUEFUUklNT05JQUxFUywgRElSRUNUT1MgTyBJTkRJUkVDVE9TLCBQUkVWSVNUT1MgTyBJTVBSRVZJU1RPUyBQUk9EVUNJRE9TIFBPUiBFTCBVU08gREUgRVNUQSBMSUNFTkNJQSBPIERFIExBIE9CUkEsIEFVTiBDVUFORE8gRUwgTElDRU5DSUFOVEUgSEFZQSBTSURPIEFEVkVSVElETyBERSBMQSBQT1NJQklMSURBRCBERSBESUNIT1MgREHDkU9TLiBBTEdVTkFTIExFWUVTIE5PIFBFUk1JVEVOIExBIEVYQ0xVU0nDk04gREUgQ0lFUlRBIFJFU1BPTlNBQklMSURBRCwgRU4gQ1VZTyBDQVNPIEVTVEEgRVhDTFVTScOTTiBQVUVERSBOTyBBUExJQ0FSU0UgQSBVU1RFRC4KCjcuIFTDqXJtaW5vLgoKYS4JRXN0YSBMaWNlbmNpYSB5IGxvcyBkZXJlY2hvcyBvdG9yZ2Fkb3MgZW4gdmlydHVkIGRlIGVsbGEgdGVybWluYXLDoW4gYXV0b23DoXRpY2FtZW50ZSBzaSBVc3RlZCBpbmZyaW5nZSBhbGd1bmEgY29uZGljacOzbiBlc3RhYmxlY2lkYSBlbiBlbGxhLiBTaW4gZW1iYXJnbywgbG9zIGluZGl2aWR1b3MgbyBlbnRpZGFkZXMgcXVlIGhhbiByZWNpYmlkbyBPYnJhcyBEZXJpdmFkYXMgbyBDb2xlY3RpdmFzIGRlIFVzdGVkIGRlIGNvbmZvcm1pZGFkIGNvbiBlc3RhIExpY2VuY2lhLCBubyB2ZXLDoW4gdGVybWluYWRhcyBzdXMgbGljZW5jaWFzLCBzaWVtcHJlIHF1ZSBlc3RvcyBpbmRpdmlkdW9zIG8gZW50aWRhZGVzIHNpZ2FuIGN1bXBsaWVuZG8gw61udGVncmFtZW50ZSBsYXMgY29uZGljaW9uZXMgZGUgZXN0YXMgbGljZW5jaWFzLiBMYXMgU2VjY2lvbmVzIDEsIDIsIDUsIDYsIDcsIHkgOCBzdWJzaXN0aXLDoW4gYSBjdWFscXVpZXIgdGVybWluYWNpw7NuIGRlIGVzdGEgTGljZW5jaWEuCgpiLglTdWpldGEgYSBsYXMgY29uZGljaW9uZXMgeSB0w6lybWlub3MgYW50ZXJpb3JlcywgbGEgbGljZW5jaWEgb3RvcmdhZGEgYXF1w60gZXMgcGVycGV0dWEgKGR1cmFudGUgZWwgcGVyw61vZG8gZGUgdmlnZW5jaWEgZGUgbG9zIGRlcmVjaG9zIGRlIGF1dG9yIGRlIGxhIG9icmEpLiBObyBvYnN0YW50ZSBsbyBhbnRlcmlvciwgZWwgTGljZW5jaWFudGUgc2UgcmVzZXJ2YSBlbCBkZXJlY2hvIGEgcHVibGljYXIgeS9vIGVzdHJlbmFyIGxhIE9icmEgYmFqbyBjb25kaWNpb25lcyBkZSBsaWNlbmNpYSBkaWZlcmVudGVzIG8gYSBkZWphciBkZSBkaXN0cmlidWlybGEgZW4gbG9zIHTDqXJtaW5vcyBkZSBlc3RhIExpY2VuY2lhIGVuIGN1YWxxdWllciBtb21lbnRvOyBlbiBlbCBlbnRlbmRpZG8sIHNpbiBlbWJhcmdvLCBxdWUgZXNhIGVsZWNjacOzbiBubyBzZXJ2aXLDoSBwYXJhIHJldm9jYXIgZXN0YSBsaWNlbmNpYSBvIHF1ZSBkZWJhIHNlciBvdG9yZ2FkYSAsIGJham8gbG9zIHTDqXJtaW5vcyBkZSBlc3RhIGxpY2VuY2lhKSwgeSBlc3RhIGxpY2VuY2lhIGNvbnRpbnVhcsOhIGVuIHBsZW5vIHZpZ29yIHkgZWZlY3RvIGEgbWVub3MgcXVlIHNlYSB0ZXJtaW5hZGEgY29tbyBzZSBleHByZXNhIGF0csOhcy4gTGEgTGljZW5jaWEgcmV2b2NhZGEgY29udGludWFyw6Egc2llbmRvIHBsZW5hbWVudGUgdmlnZW50ZSB5IGVmZWN0aXZhIHNpIG5vIHNlIGxlIGRhIHTDqXJtaW5vIGVuIGxhcyBjb25kaWNpb25lcyBpbmRpY2FkYXMgYW50ZXJpb3JtZW50ZS4KCjguIFZhcmlvcy4KCmEuCUNhZGEgdmV6IHF1ZSBVc3RlZCBkaXN0cmlidXlhIG8gcG9uZ2EgYSBkaXNwb3NpY2nDs24gcMO6YmxpY2EgbGEgT2JyYSBvIHVuYSBPYnJhIENvbGVjdGl2YSwgZWwgTGljZW5jaWFudGUgb2ZyZWNlcsOhIGFsIGRlc3RpbmF0YXJpbyB1bmEgbGljZW5jaWEgZW4gbG9zIG1pc21vcyB0w6lybWlub3MgeSBjb25kaWNpb25lcyBxdWUgbGEgbGljZW5jaWEgb3RvcmdhZGEgYSBVc3RlZCBiYWpvIGVzdGEgTGljZW5jaWEuCgpiLglTaSBhbGd1bmEgZGlzcG9zaWNpw7NuIGRlIGVzdGEgTGljZW5jaWEgcmVzdWx0YSBpbnZhbGlkYWRhIG8gbm8gZXhpZ2libGUsIHNlZ8O6biBsYSBsZWdpc2xhY2nDs24gdmlnZW50ZSwgZXN0byBubyBhZmVjdGFyw6EgbmkgbGEgdmFsaWRleiBuaSBsYSBhcGxpY2FiaWxpZGFkIGRlbCByZXN0byBkZSBjb25kaWNpb25lcyBkZSBlc3RhIExpY2VuY2lhIHksIHNpbiBhY2Npw7NuIGFkaWNpb25hbCBwb3IgcGFydGUgZGUgbG9zIHN1amV0b3MgZGUgZXN0ZSBhY3VlcmRvLCBhcXXDqWxsYSBzZSBlbnRlbmRlcsOhIHJlZm9ybWFkYSBsbyBtw61uaW1vIG5lY2VzYXJpbyBwYXJhIGhhY2VyIHF1ZSBkaWNoYSBkaXNwb3NpY2nDs24gc2VhIHbDoWxpZGEgeSBleGlnaWJsZS4KCmMuCU5pbmfDum4gdMOpcm1pbm8gbyBkaXNwb3NpY2nDs24gZGUgZXN0YSBMaWNlbmNpYSBzZSBlc3RpbWFyw6EgcmVudW5jaWFkYSB5IG5pbmd1bmEgdmlvbGFjacOzbiBkZSBlbGxhIHNlcsOhIGNvbnNlbnRpZGEgYSBtZW5vcyBxdWUgZXNhIHJlbnVuY2lhIG8gY29uc2VudGltaWVudG8gc2VhIG90b3JnYWRvIHBvciBlc2NyaXRvIHkgZmlybWFkbyBwb3IgbGEgcGFydGUgcXVlIHJlbnVuY2llIG8gY29uc2llbnRhLgoKZC4JRXN0YSBMaWNlbmNpYSByZWZsZWphIGVsIGFjdWVyZG8gcGxlbm8gZW50cmUgbGFzIHBhcnRlcyByZXNwZWN0byBhIGxhIE9icmEgYXF1w60gbGljZW5jaWFkYS4gTm8gaGF5IGFycmVnbG9zLCBhY3VlcmRvcyBvIGRlY2xhcmFjaW9uZXMgcmVzcGVjdG8gYSBsYSBPYnJhIHF1ZSBubyBlc3TDqW4gZXNwZWNpZmljYWRvcyBlbiBlc3RlIGRvY3VtZW50by4gRWwgTGljZW5jaWFudGUgbm8gc2UgdmVyw6EgbGltaXRhZG8gcG9yIG5pbmd1bmEgZGlzcG9zaWNpw7NuIGFkaWNpb25hbCBxdWUgcHVlZGEgc3VyZ2lyIGVuIGFsZ3VuYSBjb211bmljYWNpw7NuIGVtYW5hZGEgZGUgVXN0ZWQuIEVzdGEgTGljZW5jaWEgbm8gcHVlZGUgc2VyIG1vZGlmaWNhZGEgc2luIGVsIGNvbnNlbnRpbWllbnRvIG11dHVvIHBvciBlc2NyaXRvIGRlbCBMaWNlbmNpYW50ZSB5IFVzdGVkLgo= |