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Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass
The biosorption of hexavalent chromium from aqueous solutions by Opuntia cladodes and ectodermis from cactus fruits was investigated. Both types of biomass are considered low-cost, natural, and ecofriendly biosorbents. Batch experiments were carried out to determine Cr(VI) biosorption capacity and t...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi Publishing Corporation
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3997152/ https://www.ncbi.nlm.nih.gov/pubmed/24982975 http://dx.doi.org/10.1155/2014/670249 |
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author | Fernández-López, José A. Angosto, José M. Avilés, María D. |
author_facet | Fernández-López, José A. Angosto, José M. Avilés, María D. |
author_sort | Fernández-López, José A. |
collection | PubMed |
description | The biosorption of hexavalent chromium from aqueous solutions by Opuntia cladodes and ectodermis from cactus fruits was investigated. Both types of biomass are considered low-cost, natural, and ecofriendly biosorbents. Batch experiments were carried out to determine Cr(VI) biosorption capacity and the efficiency of the biosorption process under different pH, initial Cr(VI) concentration, and sorbent dosage. The biosorption of Cr(VI) by Opuntia biomass was highly pH dependent, favoring higher metal uptake at low pH. The higher biosorption capacity was exhibited at pH 2. The optimal conditions were obtained at a sorbent dosage of 1 g L(−1) and initial metal concentration of 10 mg L(−1). Biosorption kinetic data were properly fitted with the pseudo-second-order kinetic model. The rate constant, the initial biosorption rate, and the equilibrium biosorption capacity were determined. The experimental equilibrium data obtained were analyzed using two-parameter isotherm models (Langmuir, Freundlich, and Temkin). The Langmuir maximum monolayer biosorption capacity (q (max)) was 18.5 mg g(−1) for cladodes and 16.4 mg g(−1) for ectodermis. The results suggest that Opuntia biomass could be considered a promising low-cost biosorbent for the ecofriendly removal of Cr(VI) from aqueous systems. |
format | Online Article Text |
id | pubmed-3997152 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-39971522014-06-30 Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass Fernández-López, José A. Angosto, José M. Avilés, María D. ScientificWorldJournal Research Article The biosorption of hexavalent chromium from aqueous solutions by Opuntia cladodes and ectodermis from cactus fruits was investigated. Both types of biomass are considered low-cost, natural, and ecofriendly biosorbents. Batch experiments were carried out to determine Cr(VI) biosorption capacity and the efficiency of the biosorption process under different pH, initial Cr(VI) concentration, and sorbent dosage. The biosorption of Cr(VI) by Opuntia biomass was highly pH dependent, favoring higher metal uptake at low pH. The higher biosorption capacity was exhibited at pH 2. The optimal conditions were obtained at a sorbent dosage of 1 g L(−1) and initial metal concentration of 10 mg L(−1). Biosorption kinetic data were properly fitted with the pseudo-second-order kinetic model. The rate constant, the initial biosorption rate, and the equilibrium biosorption capacity were determined. The experimental equilibrium data obtained were analyzed using two-parameter isotherm models (Langmuir, Freundlich, and Temkin). The Langmuir maximum monolayer biosorption capacity (q (max)) was 18.5 mg g(−1) for cladodes and 16.4 mg g(−1) for ectodermis. The results suggest that Opuntia biomass could be considered a promising low-cost biosorbent for the ecofriendly removal of Cr(VI) from aqueous systems. Hindawi Publishing Corporation 2014 2014-04-03 /pmc/articles/PMC3997152/ /pubmed/24982975 http://dx.doi.org/10.1155/2014/670249 Text en Copyright © 2014 José A. Fernández-López et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Fernández-López, José A. Angosto, José M. Avilés, María D. Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass |
title | Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass |
title_full | Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass |
title_fullStr | Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass |
title_full_unstemmed | Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass |
title_short | Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass |
title_sort | biosorption of hexavalent chromium from aqueous medium with opuntia biomass |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3997152/ https://www.ncbi.nlm.nih.gov/pubmed/24982975 http://dx.doi.org/10.1155/2014/670249 |
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