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	Provedor de dados Electron. J. Biotechnol. (2) Autor Qaiser,Suleman (2) Saleemi,Anwar R (2) Mahmood Ahmad,Muhammad (1) Umar,Muhammad (1) Palavra-chave Biosorption (2) Kinetics (2) Equilibrium (1) Ficus religiosa leaves (1) Groundnut hull (1) Hexavalent chromium (1) Lead (1) Thermodynamics (1) Wastewater (1) Mais... Tipo do documento Journal article (2) Ano 2009 (1) 2007 (1) País Chile (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Biosorption of lead(II) and chromium(VI) on groundnut hull: Equilibrium, kinetics and thermodynamics study Electron. J. Biotechnol. Qaiser,Suleman; Saleemi,Anwar R; Umar,Muhammad. The biosorption of lead(II) and chromium(VI) on groundnut hull was investigated. Batch biosorption experiments were conducted to find the equilibrium time and biosorption capacity. Effect of parameters like pH, temperature and initial metal concentration was studied. The maximum biosorption capacity of lead(II) and chromium(VI) was found to be 31.54 ± 0.63 and 30.21 ± 0.74 mg g-1, respectively. The optimum pH for lead(II) and chromium(VI) removal was 5 ± 0.1 and 2 ± 0.1, respectively. The temperature change, in the range of 20 - 45ºC affected the biosorption capacity. The maximum removal of lead(II) was achieved at 20 ± 2ºC, where as maximum uptake of chromium(VI) was observed at 40 ± 2ºC. The biosorption data was fitted to the Langmuir and the Freundlich... Tipo: Journal article Palavras-chave: Biosorption; Equilibrium; Groundnut hull; Kinetics; Thermodynamics. Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000400003 Heavy metal uptake by agro based waste materials Electron. J. Biotechnol. Qaiser,Suleman; Saleemi,Anwar R; Mahmood Ahmad,Muhammad. Presence of heavy metals in the aquatic systems has become a serious problem. As a result, there has been a great deal of attention given to new technologies for removal of heavy metal ions from contaminated waters. Biosorption is one such emerging technology which utilized naturally occurring waste materials to sequester heavy metals from industrial wastewater. The aim of the present study was to utilize the locally available agricultural waste materials for heavy metal removal from industrial wastewater. The wastewater containing lead and hexavalent chromium was treated with biomass prepared from ficus religiosa leaves. It was fund that a time of one hr was sufficient for sorption to attain equilibrium. The equilibrium sorption capacity after one hr was... Tipo: Journal article Palavras-chave: Biosorption; Ficus religiosa leaves; Hexavalent chromium; Kinetics; Lead; Wastewater. Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000300008 Registros recuperados: 2 Primeira ... 1 ... Última

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