Polishing of painting process effluents through adsorption with biochar from winemaking residues

A real industrial efuent from the pre-treatment and painting processes was polished through adsorption using alternative biochar derived from grape pomace wastes. The biochar was produced in a pilot-scale plant from composted grape pomace. Biochar showed an equilibrium between acidic and basic group...

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Autores:
Carvalho, Fernando L.
Pinto, Diana
Schio, Rejiane R.
dos Santos, Jaqueline P.
Ketzer, Felipe
Silva, Luis F.O.
Dotto, Guilherme Luiz
Tipo de recurso:
Article of journal
Fecha de publicación:
2022
Institución:
Corporación Universidad de la Costa
Repositorio:
REDICUC - Repositorio CUC
Idioma:
eng
OAI Identifier:
oai:repositorio.cuc.edu.co:11323/9344
Acceso en línea:
https://hdl.handle.net/11323/9344
https://doi.org/10.1007/s11356-022-20488-4
https://repositorio.cuc.edu.co/
Palabra clave:
Grape pomace biochar
Efuent
Metal removal
Adsorption
Rights
embargoedAccess
License
Atribución 4.0 Internacional (CC BY 4.0)
Description
Summary:A real industrial efuent from the pre-treatment and painting processes was polished through adsorption using alternative biochar derived from grape pomace wastes. The biochar was produced in a pilot-scale plant from composted grape pomace. Biochar showed an equilibrium between acidic and basic groups on the surface. The presence of irregular cavities in the structure and mesopores was confrmed by analyzing N2 physisorption and SEM. Concerning the efuent, Ni and Zn were the main problematic elements. The adsorption isotherms and kinetics of Ni and Zn from the efuent using the biochar could be represented by the Henry, pseudo-frst-order, and pseudo-second-order models, respectively. Adsorption equilibrium was reached within 60 min for Ni and Zn present in the real efuent. Besides, the adsorption process was endothermic, favorable, and spontaneous. These results demonstrate that Zn and Ni metals were successfully removed from the industrial efuent, presenting fnal concentration values within the limit of legislation for efuent disposal in agricultural soil.