Biosorption of lead(II) and chromium(VI) on groundnut hull: Equilibrium, kinetics and thermodynamics study

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...

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Autores principales:	Qaiser,Suleman, Saleemi,Anwar R, Umar,Muhammad
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2009
Materias:	biosorption equilibrium groundnut hull kinetics thermodynamics
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000400003
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spelling	oai:scielo:S0717-345820090004000032010-04-19Biosorption of lead(II) and chromium(VI) on groundnut hull: Equilibrium, kinetics and thermodynamics studyQaiser,SulemanSaleemi,Anwar RUmar,Muhammad biosorption equilibrium groundnut hull kinetics thermodynamics 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 isotherm models. The Langmuir model showed better representation of data, with correlation coefficient greater than 0.98. The kinetics of biosorption followed the pseudo second order kinetics model. The thermodynamics parameters were evaluated from the experimental data.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.12 n.4 20092009-10-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000400003en10.4067/S0717-34582009000400003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	biosorption equilibrium groundnut hull kinetics thermodynamics
spellingShingle	biosorption equilibrium groundnut hull kinetics thermodynamics Qaiser,Suleman Saleemi,Anwar R Umar,Muhammad Biosorption of lead(II) and chromium(VI) on groundnut hull: Equilibrium, kinetics and thermodynamics study
description	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 isotherm models. The Langmuir model showed better representation of data, with correlation coefficient greater than 0.98. The kinetics of biosorption followed the pseudo second order kinetics model. The thermodynamics parameters were evaluated from the experimental data.
author	Qaiser,Suleman Saleemi,Anwar R Umar,Muhammad
author_facet	Qaiser,Suleman Saleemi,Anwar R Umar,Muhammad
author_sort	Qaiser,Suleman
title	Biosorption of lead(II) and chromium(VI) on groundnut hull: Equilibrium, kinetics and thermodynamics study
title_short	Biosorption of lead(II) and chromium(VI) on groundnut hull: Equilibrium, kinetics and thermodynamics study
title_full	Biosorption of lead(II) and chromium(VI) on groundnut hull: Equilibrium, kinetics and thermodynamics study
title_fullStr	Biosorption of lead(II) and chromium(VI) on groundnut hull: Equilibrium, kinetics and thermodynamics study
title_full_unstemmed	Biosorption of lead(II) and chromium(VI) on groundnut hull: Equilibrium, kinetics and thermodynamics study
title_sort	biosorption of lead(ii) and chromium(vi) on groundnut hull: equilibrium, kinetics and thermodynamics study
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000400003
work_keys_str_mv	AT qaisersuleman biosorptionofleadiiandchromiumviongroundnuthullequilibriumkineticsandthermodynamicsstudy AT saleemianwarr biosorptionofleadiiandchromiumviongroundnuthullequilibriumkineticsandthermodynamicsstudy AT umarmuhammad biosorptionofleadiiandchromiumviongroundnuthullequilibriumkineticsandthermodynamicsstudy
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Biosorption of lead(II) and chromium(VI) on groundnut hull: Equilibrium, kinetics and thermodynamics study

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