Kinetic studies of heavy metals biosorption by acidogenic biomass immobilized in clinoptilolite

G. M. Figueroa-Torres*, M. T. Certucha-Barragán, E. Acedo-Félix, O. Monge-Amaya, F. J. Almendariz-Tapia, L. A. Gasca-Estefanía

*Autor correspondiente de este trabajo

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

38 Citas (Scopus)

Resumen

The aim of this work was to establish the sorption equilibrium and kinetics of copper, Cu(II), and iron, Fe(II), removal by acidogenic biomass immobilized in clinoptilolite. The experimental methodology consisted of a series of batch studies in which immobilized acidogenic biomass was exposed to metallic solutions within a concentration range of: 0-300 mg/L Cu(II), 0-800 mg/L Fe(II) in single systems, and 0-1000 mg/L Cu(II)-Fe(II) in a binary system. It was found that copper and iron sorption by acidogenic biomass immobilized in clinoptilolite can be represented by the pseudo second-order type reaction. Data obtained from the equilibrium studies were adequately described by the Langmuir adsorption model. Although the predicted maximum biosorption capacity of copper increased from qmax = 28.23 mgCu(II)/gSSV in the single system to qmax = 35.46 mgCu(II)/gSSV in the binary system, it was found that co-existence of copper and iron ions decreased the actual biosorption capacity of the acidogenic biomass. The findings of this work indicate that acidogenic biomass immobilized in clinoptilolite is a promising low-cost biosorbent for the removal of copper and iron, but binary metal mixtures of copper and iron must be carefully selected to avoid low removal efficiencies during a biosorption-based wastewater treatment process.

Idioma originalInglés
Páginas (desde-hasta)241-246
Número de páginas6
PublicaciónJournal of the Taiwan Institute of Chemical Engineers
Volumen61
DOI
EstadoPublicada - 1 abr. 2016

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Publisher Copyright:
© 2015 Taiwan Institute of Chemical Engineers.

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