Biosorption of Cr(VI) from aqueous solutions by nonliving green algae Cladophora albida / Liping Deng in Minerals engineering, Vol. 22 N° 4 (Mars 2009)  

Public ISBD [article]  inMinerals engineering > Vol. 22 N° 4 (Mars 2009) . - pp. 372–377 Titre : Biosorption of Cr(VI) from aqueous solutions by nonliving green algae Cladophora albida Type de document : texte imprimé Auteurs : Liping Deng, Auteur ; Yang Zhang, Auteur ; Qin, Jie, Auteur Année de publication : 2009 Article en page(s) : pp. 372–377 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Biosorption Chromium(VI) Cladophora albida Mechanism Wastewater Résumé : Biosorption of Cr(VI) from aqueous solutions by nonliving green algae Cladophora albida was investigated in batch experiments. The influence of pH, algal dosage, initial Cr(VI) concentration, temperature and co-existing anions on removal efficiencies of C. albida was studied. Cr(VI) removal process was influenced significantly by the variation of pH, and the optimum pH was chosen at a range of 1.0–3.0. The optimum algal dosage 2 g/L was used in the experiment. The removal rate of Cr(VI) was relatively rapid in the first 60 min, but then the rate decreased gradually. Removal mechanism was studied by analyzing Cr(VI) and total Cr in the solution. Biosorption and bioreduction were involved in the Cr(VI) removal. Biosorption of Cr(VI) was the first step, followed by Cr(VI) bioreduction and Cr(III) biosorption on the algal biomass. Actual industrial wastewater was used to evaluate the practicality of the biomass C. albida. From a practical viewpoint, the abundant and economic biomass C. albida could be used for removal of Cr(VI) from wastewater by the reduction of toxic Cr(VI) to less toxic Cr(III). DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687508002525 [article] Biosorption of Cr(VI) from aqueous solutions by nonliving green algae Cladophora albida [texte imprimé] / Liping Deng, Auteur ; Yang Zhang, Auteur ; Qin, Jie, Auteur . - 2009 . - pp. 372–377. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 22 N° 4 (Mars 2009) . - pp. 372–377 Mots-clés : Biosorption Chromium(VI) Cladophora albida Mechanism Wastewater Résumé : Biosorption of Cr(VI) from aqueous solutions by nonliving green algae Cladophora albida was investigated in batch experiments. The influence of pH, algal dosage, initial Cr(VI) concentration, temperature and co-existing anions on removal efficiencies of C. albida was studied. Cr(VI) removal process was influenced significantly by the variation of pH, and the optimum pH was chosen at a range of 1.0–3.0. The optimum algal dosage 2 g/L was used in the experiment. The removal rate of Cr(VI) was relatively rapid in the first 60 min, but then the rate decreased gradually. Removal mechanism was studied by analyzing Cr(VI) and total Cr in the solution. Biosorption and bioreduction were involved in the Cr(VI) removal. Biosorption of Cr(VI) was the first step, followed by Cr(VI) bioreduction and Cr(III) biosorption on the algal biomass. Actual industrial wastewater was used to evaluate the practicality of the biomass C. albida. From a practical viewpoint, the abundant and economic biomass C. albida could be used for removal of Cr(VI) from wastewater by the reduction of toxic Cr(VI) to less toxic Cr(III). DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687508002525

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