An Innovative Low-Cost Equipment for Electro-Concentration of Microalgal Biomass

Microalgal harvesting is one of the most challenging processes in the development of algal research and development. Several methods, such as centrifugation, flocculation and filtration, are available at the laboratory scale. However, the requirement for expensive pieces of equipment and the possibi...

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Autores:
Contreras Ropero, Jefferson Eduardo
Barajas Solano, andres F
García-Martinez, Janet
ZUORRO, Antonio
Sanchez, Edwar
Cárdenas, Ingri
Tipo de recurso:
Article of journal
Fecha de publicación:
2020
Institución:
Universidad Francisco de Paula Santander
Repositorio:
Repositorio Digital UFPS
Idioma:
eng
OAI Identifier:
oai:repositorio.ufps.edu.co:ufps/417
Acceso en línea:
http://repositorio.ufps.edu.co/handle/ufps/417
Palabra clave:
Dewatering
Response surface methodology
Arduino
Aluminum electrodes
Microalgae harvesting
Rights
openAccess
License
Atribución 4.0 Internacional (CC BY 4.0)
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dc.title.eng.fl_str_mv An Innovative Low-Cost Equipment for Electro-Concentration of Microalgal Biomass
title An Innovative Low-Cost Equipment for Electro-Concentration of Microalgal Biomass
spellingShingle An Innovative Low-Cost Equipment for Electro-Concentration of Microalgal Biomass
Dewatering
Response surface methodology
Arduino
Aluminum electrodes
Microalgae harvesting
title_short An Innovative Low-Cost Equipment for Electro-Concentration of Microalgal Biomass
title_full An Innovative Low-Cost Equipment for Electro-Concentration of Microalgal Biomass
title_fullStr An Innovative Low-Cost Equipment for Electro-Concentration of Microalgal Biomass
title_full_unstemmed An Innovative Low-Cost Equipment for Electro-Concentration of Microalgal Biomass
title_sort An Innovative Low-Cost Equipment for Electro-Concentration of Microalgal Biomass
dc.creator.fl_str_mv Contreras Ropero, Jefferson Eduardo
Barajas Solano, andres F
García-Martinez, Janet
ZUORRO, Antonio
Sanchez, Edwar
Cárdenas, Ingri
dc.contributor.author.none.fl_str_mv Contreras Ropero, Jefferson Eduardo
Barajas Solano, andres F
García-Martinez, Janet
ZUORRO, Antonio
Sanchez, Edwar
Cárdenas, Ingri
dc.subject.proposal.eng.fl_str_mv Dewatering
Response surface methodology
Arduino
Aluminum electrodes
Microalgae harvesting
topic Dewatering
Response surface methodology
Arduino
Aluminum electrodes
Microalgae harvesting
description Microalgal harvesting is one of the most challenging processes in the development of algal research and development. Several methods, such as centrifugation, flocculation and filtration, are available at the laboratory scale. However, the requirement for expensive pieces of equipment and the possibility of biomass contamination are recurring gaps that hinder the development of microalgae R&D (research and development) in different parts of the world. Recently, electroflotation has been proved to be a suitable method for the harvesting of different species of microalgae and cyanobacteria. To this day, there are no companies that sell laboratory-scale electroflotation equipment; this is mainly due to the gap in the knowledge of which factors (time, mixing rate, number of electrodes and others) will affect the efficiency of concentration without reducing the biomass quality. This paper aims to build an innovative, low-cost electroflotation system for under 300 USD (United States dollar) with cheap and resistant materials. To achieve our goal, we tested the interaction of three variables (time, mixing rate and amount of electrodes). Results showed that an efficiency closer to 100% could be achieved in under 20 min using > 10 electrodes and 150 rpm (round per minute). We hope this innovative approach can be used by different researchers to improve our knowledge of the concentration and harvesting of algae and cyanobacteria.
publishDate 2020
dc.date.issued.none.fl_str_mv 2020-07-14
dc.date.accessioned.none.fl_str_mv 2021-10-26T00:26:22Z
dc.date.available.none.fl_str_mv 2021-10-26T00:26:22Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.relation.ispartof.none.fl_str_mv Applied Sciences (Switzerland) ISSN: 2076-3417, 2020 vol:10 fasc: 14 págs: 1 - 19, DOI:10.3390/app10144841
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dc.relation.citationendpage.spa.fl_str_mv 19
dc.relation.citationissue.spa.fl_str_mv 14 (2020)
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dc.relation.cites.none.fl_str_mv E. M. Sanchez-Galvis, I. Y. Cardenas-Gutierrez, J. E. Contreras-Ropero, J. B. García-Martínez, A. F. Barajas-Solano y A. Zuorro, "An innovative low-cost equipment for electro-concentration of microalgal biomass", Applied Sciences, vol. 10, n.º 14, pp. 1–19, julio de 2020. Accedido el 26 de octubre de 2021. [En línea]. Disponible: https://doi.org/10.3390/app10144841
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dc.publisher.spa.fl_str_mv Applied Sciences (Switzerland)
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institution Universidad Francisco de Paula Santander
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spelling Contreras Ropero, Jefferson Eduardo14643edabc8451f3e53932a0a299b372600Barajas Solano, andres F7237a5ca918751f9d045f15b62fd2f1f600García-Martinez, Janet80edb67ba4cf51c8ef0d2bf62e0faa4d600ZUORRO, Antonio1d9ebb9bdc0d09156364b9fd1169276a600Sanchez, Edwar78bd5d84a6624efcd5084fe5613be85aCárdenas, Ingri163c432c3472cd065b47174d8d4c91ae2021-10-26T00:26:22Z2021-10-26T00:26:22Z2020-07-14http://repositorio.ufps.edu.co/handle/ufps/41710.3390/app10144841Microalgal harvesting is one of the most challenging processes in the development of algal research and development. Several methods, such as centrifugation, flocculation and filtration, are available at the laboratory scale. However, the requirement for expensive pieces of equipment and the possibility of biomass contamination are recurring gaps that hinder the development of microalgae R&D (research and development) in different parts of the world. Recently, electroflotation has been proved to be a suitable method for the harvesting of different species of microalgae and cyanobacteria. To this day, there are no companies that sell laboratory-scale electroflotation equipment; this is mainly due to the gap in the knowledge of which factors (time, mixing rate, number of electrodes and others) will affect the efficiency of concentration without reducing the biomass quality. This paper aims to build an innovative, low-cost electroflotation system for under 300 USD (United States dollar) with cheap and resistant materials. To achieve our goal, we tested the interaction of three variables (time, mixing rate and amount of electrodes). Results showed that an efficiency closer to 100% could be achieved in under 20 min using > 10 electrodes and 150 rpm (round per minute). We hope this innovative approach can be used by different researchers to improve our knowledge of the concentration and harvesting of algae and cyanobacteria.19 páginasapplication/pdfengApplied Sciences (Switzerland)Applied Sciences (Switzerland) ISSN: 2076-3417, 2020 vol:10 fasc: 14 págs: 1 - 19, DOI:10.3390/app10144841Vol. 10, No. 14 (2021)1914 (2020)110E. M. Sanchez-Galvis, I. Y. Cardenas-Gutierrez, J. E. Contreras-Ropero, J. B. García-Martínez, A. F. Barajas-Solano y A. Zuorro, "An innovative low-cost equipment for electro-concentration of microalgal biomass", Applied Sciences, vol. 10, n.º 14, pp. 1–19, julio de 2020. Accedido el 26 de octubre de 2021. [En línea]. Disponible: https://doi.org/10.3390/app10144841Applied Sciences (Switzerland)2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).info:eu-repo/semantics/openAccessAtribución 4.0 Internacional (CC BY 4.0)http://purl.org/coar/access_right/c_abf2https://www.mdpi.com/2076-3417/10/14/4841An Innovative Low-Cost Equipment for Electro-Concentration of Microalgal BiomassArtículo de revistahttp://purl.org/coar/resource_type/c_6501http://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_970fb48d4fbd8a85DewateringResponse surface methodologyArduinoAluminum electrodesMicroalgae harvestingLal, A.; Ghosh, S.; Das, D. Improvement in electrically induced biomass harvesting of Chlorella sp. MJ 11/11 for bulk biomass production. J. Appl. Phycol. 2018, 30, 979–993.Ummalyma, S.B.; Mathew, A.K.; Pandey, A.; Sukumaran, R.K. Harvesting of microalgal biomass: Efficient method for flocculation through pH modulation. Bioresour. Technol. 2016, 213, 216–221.Xiong, Q.; Pang, Q.; Pan, X.; Chika, A.O.; Wang, L.; Shi, J.; Jia, L.; Chen, C.; Gao, Y. Facile sand enhanced electro-flocculation for cost-efficient harvesting of Dunaliella salina. Bioresour. Technol. 2015, 187, 326–330.Misra, R.; Guldhe, A.; Singh, P.; Rawat, I.; Stenström, T.A.; Bux, F. Evaluation of operating conditions for sustainable harvesting of microalgal biomass applying electrochemical method using non sacrificial electrodes. Bioresour. Technol. 2015, 176, 1–7Golzary, A.; Imanian, S.; Abdoli, M.A.; Khodadadi, A.; Karbassi, A. A cost-effective strategy for marine microalgae separation by electro-coagulation-flotation process aimed at bio-crude oil production: Optimization and evaluation study. Sep. Purif. Tech. 2015, 147, 156–165.Lee, A.K.; Lewis, D.M.; Ashman, P.J. Harvesting of marine microalgae by electroflocculation: The energetics, plant design, and economics. Appl. Energy 2013, 108, 45–53.Marrone, B.L.; Lacey, R.E.; Anderson, D.B.; Bonner, J.; Coons, J.; Dale, T.; Downes, C.M.; Fernando, S.; Fuller, C.; Goodall, B.; et al. Review of the harvesting and extraction program within the National Alliance for Advanced Biofuels and Bioproducts. Algal. Res. 2017, 33, 470–485.Shi, W.; Zhu, L.; Chen, Q.; Lu, J.; Pan, G.; Hu, L.; Yi, Q. Synergy of flocculation and flotation for microalgae harvesting using aluminium electrolysis. Bioresour. Technol. 2017, 233, 127–133.Ðuki´c, A.; Firak, M. Hydrogen production using alkaline electrolyzer and photovoltaic (PV) module. Int. J. Hydrog. Energy 2011, 36, 7799–7806.Mollaha, M.Y.A.; Morkovsky, P.; Gomes, J.A.G.; Kesmez, M.; Parga, J.; Cocke, D.L. Fundamentals, present and future perspectives of electrocoagulation. J. Hazard. Mater. 2004, 114, 199–210.Emamjomeh, M.M.; Sivakumar, M. An empirical model for defluoridation by batch monopolar electrocoagulation/flotation (ECF) process. J. Hazard. Mater. 2006, 131, 118–125.Gamage, N.P.; Rimer, J.D.; Chellam, S. Improvements in permeate flux by aluminum electroflotation pretreatment during microfiltration of surface water. J. Membr. Sci. 2012, 411–412, 45–53.Castellaños-Estupiñan, M.A.; Sánchez-Galvis, E.M.; García-Martínez, J.B.; Barajas-Ferreira, C.; Zuorro, A.; Barajas-Solano, A.F. Design of an electroflotation system for the concentration and harvesting of freshwater microalgae. Chem. Eng. Trans. 2018, 64, 1–6.Andersen, R.A.; Berges, J.A.; Harrison, P.J.; Watanabe, M.M. Appendix A—Recipes for Freshwater and Seawater Media. In Algal Culturing Techniques; Andersen, R.A., Ed.; Elsevier Academic Press: Burlington, MA, USA, 2005; pp. 429–538.Zenouzi, A.; Ghobadian, B.; Hejazi, M.A.; Rahnemoon, P. Harvesting of microalgae Dunaliella salina using electroflocculation. J. Agric. Sci. Technol. 2013, 15, 879–888.Zhou, W.; Gao, L.; Cheng, W.; Chen, L.; Wang, J.; Wang, H.; Zhang, W.; Liu, T. Electro-flotation of Chlorella sp. assisted with flocculation by chitosan. Algal. Res. 2016, 18, 7–14.Liu, S.; Abu Hajar, H.A.; Riefler, G.; Stuart, B.J. Investigation of electrolytic flocculation for microalga: Scenedesmus sp. using aluminum and graphite electrodes. RSC. Adv. 2018, 8, 38808–38817.Bleeke, F.; Quante, G.; Winckelmann, D.; Klöck, G. Effect of voltage and electrode material on electroflocculation of Scenedesmus acuminatus. Bioresour. Bioprocess. 2015, 2, 1–8.Gao, S.; Du, M.; Tian, J.; Yang, J.; Yang, J.; Ma, F.; Nan, J. Effects of chloride ions on electro-coagulation-flotation process with aluminum electrodes for algae removal. J. Hazard. Mater. 2010, 182, 827–834.Gao, S.; Yang, J.; Tian, J.; Ma, F.; Tu, G.; Du, M. Electro-coagulation-flotation process for algae removal. J. Hazard. Mater. 2010, 177, 336–343.Chatsungnoen, T.; Chisti, Y. Flocculation and electroflocculation for algal biomass recovery. In Biofuels from Algae, 2nd ed.; Pandey, A., Chang, S., Soccol, C., Lee, D., Chisti, Y., Eds.; Elsevier: Amsterdam, The Netherlands, 2019; Volume 1, pp. 257–286.Maffei, G.; Bracciale, M.P.; Broggi, A.; Zuorro, A.; Santarelli, M.L.; Lavecchia, R. Effect of an enzymatic treatment with cellulase and mannanase on the structural properties of Nannochloropsis microalgae. Bioresour. Technol. 2018, 249, 592–598.Lavecchia, R.; Medici, F.; Patterer, M.S.; Zuorro, A. Lead removal from water by adsorption on spent coffee grounds. Chem. Eng. Trans. 2016, 47, 295–300.Fidaleo, M.; Zuorro, A.; Lavecchia, R. Antimicrobial activity of some italian honeys against pathogenic bacteria. Chem. Eng. Trans. 2011, 47, 295–300Rahmani, A.; Zerrouki, D.; Djafer, L.; Ayral, A. Hydrogen recovery from the photovoltaic electroflocculation-flotation process for harvesting Chlorella pyrenoidosa microalgae. Int. J. Hyd. Energy 2017, 42, 19591–19596.Baierle, F.; John, D.; Souza, M.; Bjerk, T.; Moraes, M.; Hoeltz, M.; Rohlfej, A.; Camargo, M.; Corbellini, V.; Schneider, R. Biomass from microalgae separation by electroflotation with iron and aluminum spiral electrodes. Chem. Eng. J. 2015, 267, 274–281.Vandamme, D.; Pontes, S.C.V.; Goiris, K.; Foubert, I.; Pinoy, L.J.J.; Muylaert, K. Evaluation of electro-coagulation–flocculation for harvesting marine and freshwater microalgae. Biotechnol. Bioeng. 2011, 108, 2320–2329.ORIGINALAn Innovative Low-Cost Equipment for Electro-Concentration.pdfAn Innovative Low-Cost Equipment for Electro-Concentration.pdfapplication/pdf4413522https://repositorio.ufps.edu.co/bitstream/ufps/417/1/An%20Innovative%20Low-Cost%20Equipment%20for%20Electro-Concentration.pdf05ee0b1d8c4526fb2ad4c5e8d00e3a32MD51open accessLICENSElicense.txtlicense.txttext/plain; charset=utf-814828https://repositorio.ufps.edu.co/bitstream/ufps/417/2/license.txt2f9959eaf5b71fae44bbf9ec84150c7aMD52open accessTEXTAn Innovative Low-Cost Equipment for Electro-Concentration.pdf.txtAn Innovative Low-Cost Equipment for Electro-Concentration.pdf.txtExtracted texttext/plain35836https://repositorio.ufps.edu.co/bitstream/ufps/417/3/An%20Innovative%20Low-Cost%20Equipment%20for%20Electro-Concentration.pdf.txt10c64f0dfb3ef0d5403facd2a4cc3522MD53open accessTHUMBNAILAn Innovative Low-Cost Equipment for Electro-Concentration.pdf.jpgAn Innovative Low-Cost Equipment for 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 incorporada en las Obras Colectivas.

b.	Distribuir copias o fonogramas de las Obras, exhibirlas públicamente, ejecutarlas públicamente y/o ponerlas a disposición pública, incluyéndolas como incorporadas en Obras Colectivas, según corresponda.

c.	Distribuir copias de las Obras Derivadas que se generen, exhibirlas públicamente, ejecutarlas públicamente y/o ponerlas a disposición pública.
Los derechos mencionados anteriormente pueden ser ejercidos en todos los medios y formatos, actualmente conocidos o que se inventen en el futuro. Los derechos antes mencionados incluyen el derecho a realizar dichas modificaciones en la medida que sean técnicamente necesarias para ejercer los derechos en otro medio o formatos, pero de otra manera usted no está autorizado para realizar obras derivadas. Todos los derechos no otorgados expresamente por el Licenciante quedan por este medio reservados, incluyendo pero sin limitarse a aquellos que se mencionan en las secciones 4(d) y 4(e).

4. Restricciones.
La licencia otorgada en la anterior Sección 3 está expresamente sujeta y limitada por las siguientes restricciones:

a.	Usted puede distribuir, exhibir públicamente, ejecutar públicamente, o poner a disposición pública la Obra sólo bajo las condiciones de esta Licencia, y Usted debe incluir una copia de esta licencia o del Identificador Universal de Recursos de la misma con cada copia de la Obra que distribuya, exhiba públicamente, ejecute públicamente o ponga a disposición pública. No es posible ofrecer o imponer ninguna condición sobre la Obra que altere o limite las condiciones de esta Licencia o el ejercicio de los derechos de los destinatarios otorgados en este documento. No es posible sublicenciar la Obra. Usted debe mantener intactos todos los avisos que hagan referencia a esta Licencia y a la cláusula de limitación de garantías. Usted no puede distribuir, exhibir públicamente, ejecutar públicamente, o poner a disposición pública la Obra con alguna medida tecnológica que controle el acceso o la utilización de ella de una forma que sea inconsistente con las condiciones de esta Licencia. Lo anterior se aplica a la Obra incorporada a una Obra Colectiva, pero esto no exige que la Obra Colectiva aparte de la obra misma quede sujeta a las condiciones de esta Licencia. Si Usted crea una Obra Colectiva, previo aviso de cualquier Licenciante debe, en la medida de lo posible, eliminar de la Obra Colectiva cualquier referencia a dicho Licenciante o al Autor Original, según lo solicitado por el Licenciante y conforme lo exige la cláusula 4(c).

b.	Usted no puede ejercer ninguno de los derechos que le han sido otorgados en la Sección 3 precedente de modo que estén principalmente destinados o directamente dirigidos a conseguir un provecho comercial o una compensación monetaria privada. El intercambio de la Obra por otras obras protegidas por derechos de autor, ya sea a través de un sistema para compartir archivos digitales (digital file-sharing) o de cualquier otra manera no será considerado como estar destinado principalmente o dirigido directamente a conseguir un provecho comercial o una compensación monetaria privada, siempre que no se realice un pago mediante una compensación monetaria en relación con el intercambio de obras protegidas por el derecho de autor.

c.	Si usted distribuye, exhibe públicamente, ejecuta públicamente o ejecuta públicamente en forma digital la Obra o cualquier Obra Derivada u Obra Colectiva, Usted debe mantener intacta toda la información de derecho de autor de la Obra y proporcionar, de forma razonable según el medio o manera que Usted esté utilizando: (i) el nombre del Autor Original si está provisto (o seudónimo, si fuere aplicable), y/o (ii) el nombre de la parte o las partes que el Autor Original y/o el Licenciante hubieren designado para la atribución (v.g., un instituto patrocinador, editorial, publicación) en la información de los derechos de autor del Licenciante, términos de servicios o de otras formas razonables; el título de la Obra si está provisto; en la medida de lo razonablemente factible y, si está provisto, el Identificador Uniforme de Recursos (Uniform Resource Identifier) que el Licenciante especifica para ser asociado con la Obra, salvo que tal URI no se refiera a la nota sobre los derechos de autor o a la información sobre el licenciamiento de la Obra; y en el caso de una Obra Derivada, atribuir el crédito identificando el uso de la Obra en la Obra Derivada (v.g., "Traducción Francesa de la Obra del Autor Original," o "Guión Cinematográfico basado en la Obra original del Autor Original"). Tal crédito puede ser implementado de cualquier forma razonable; en el caso, sin embargo, de Obras Derivadas u Obras Colectivas, tal crédito aparecerá, como mínimo, donde aparece el crédito de cualquier otro autor comparable y de una manera, al menos, tan destacada como el crédito de otro autor comparable.

d.	Para evitar toda confusión, el Licenciante aclara que, cuando la obra es una composición musical:

i.	Regalías por interpretación y ejecución bajo licencias generales. El Licenciante se reserva el derecho exclusivo de autorizar la ejecución pública o la ejecución pública digital de la obra y de recolectar, sea individualmente o a través de una sociedad de gestión colectiva de derechos de autor y derechos conexos (por ejemplo, SAYCO), las regalías por la ejecución pública o por la ejecución pública digital de la obra (por ejemplo Webcast) licenciada bajo licencias generales, si la interpretación o ejecución de la obra está primordialmente orientada por o dirigida a la obtención de una ventaja comercial o una compensación monetaria privada.

ii.	Regalías por Fonogramas. El Licenciante se reserva el derecho exclusivo de recolectar, individualmente o a través de una sociedad de gestión colectiva de derechos de autor y derechos conexos (por ejemplo, los consagrados por la SAYCO), una agencia de derechos musicales o algún agente designado, las regalías por cualquier fonograma que Usted cree a partir de la obra (“versión cover”) y distribuya, en los términos del régimen de derechos de autor, si la creación o distribución de esa versión cover está primordialmente destinada o dirigida a obtener una ventaja comercial o una compensación monetaria privada.

e.	Gestión de Derechos de Autor sobre Interpretaciones y Ejecuciones Digitales (WebCasting). Para evitar toda confusión, el Licenciante aclara que, cuando la obra sea un fonograma, el Licenciante se reserva el derecho exclusivo de autorizar la ejecución pública digital de la obra (por ejemplo, webcast) y de recolectar, individualmente o a través de una sociedad de gestión colectiva de derechos de autor y derechos conexos (por ejemplo, ACINPRO), las regalías por la ejecución pública digital de la obra (por ejemplo, webcast), sujeta a las disposiciones aplicables del régimen de Derecho de Autor, si esta ejecución pública digital está primordialmente dirigida a obtener una ventaja comercial o una compensación monetaria privada.

5. Representaciones, Garantías y Limitaciones de Responsabilidad.
A MENOS QUE LAS PARTES LO ACORDARAN DE OTRA FORMA POR ESCRITO, EL LICENCIANTE OFRECE LA OBRA (EN EL ESTADO EN EL QUE SE ENCUENTRA) “TAL CUAL”, SIN BRINDAR GARANTÍAS DE CLASE ALGUNA RESPECTO DE LA OBRA, YA SEA EXPRESA, IMPLÍCITA, LEGAL O CUALQUIERA OTRA, INCLUYENDO, SIN LIMITARSE A ELLAS, GA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