Kinetic studies of heavy metals biosorption by acidogenic biomass immobilized in clinoptilolite
| Autor: | M.T. Certucha-Barragán, F. J. Almendariz-Tapia, L.A. Gasca-Estefanía, Gonzalo M. Figueroa-Torres, Onofre Monge-Amaya, Evelia Acedo-Félix |
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| Rok vydání: | 2016 |
| Předmět: |
Clinoptilolite
General Chemical Engineering Inorganic chemistry Biosorption chemistry.chemical_element Langmuir adsorption model Biomass Sorption 02 engineering and technology General Chemistry 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Copper Metal symbols.namesake chemistry visual_art visual_art.visual_art_medium symbols Binary system 0210 nano-technology 0105 earth and related environmental sciences |
| Zdroj: | Journal of the Taiwan Institute of Chemical Engineers. 61:241-246 |
| ISSN: | 1876-1070 |
| DOI: | 10.1016/j.jtice.2015.12.018 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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