The interaction between Cu, Pb, Zn, and Ni in their biosorption onto polyurethane immobilised Sphagnum moss
The interaction between Cu, Pb, Zn, and Ni in their biosorption onto polyurethane immobilised Sphagnum moss
The uptake of Cu(II), Pb(II), Zn(II) and Ni(II) was investigated both individually and from mixed metal ion solutions using Sphagnum moss biomass immobilised in a polyurethane support. The data were evaluated using the Langmuir isotherm equation, and sorption capacities were calculated for different concentration ranges. It was concluded that care must be taken in presentation and interpretation of results when this modelling approach is applied at low concentrations. Repeated metal loading cycles also gave lower values for sorption capacity compared with the maximum potential value, due to equilibrium effects. The uptake capacity for the different metals on a weight basis was in the order lead > copper > zinc > nickel, but on a molar basis this changed to copper > lead > nickel > zinc. Sorption from a multi-component metal system showed that lead and copper competed equally for binding sites and much more effectively than zinc and nickel. Equations were derived to predict the percentage effect on a given metal ion of other metals in a multi-metal system based their behaviour in the relevant single and binary systems
heavy metal, biosorption, langmuir isotherm, interaction effect
1297-1305
Zhang, Yue
69b11d32-d555-46e4-a333-88eee4628ae7
Banks, Charles
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
November 2005
Zhang, Yue
69b11d32-d555-46e4-a333-88eee4628ae7
Banks, Charles
5c6c8c4b-5b25-4e37-9058-50fa8d2e926f
Zhang, Yue and Banks, Charles
(2005)
The interaction between Cu, Pb, Zn, and Ni in their biosorption onto polyurethane immobilised Sphagnum moss.
Journal of Chemical Technology and Biotechnology, 80 (11), .
(doi:10.1002/jctb.1329).
Abstract
The uptake of Cu(II), Pb(II), Zn(II) and Ni(II) was investigated both individually and from mixed metal ion solutions using Sphagnum moss biomass immobilised in a polyurethane support. The data were evaluated using the Langmuir isotherm equation, and sorption capacities were calculated for different concentration ranges. It was concluded that care must be taken in presentation and interpretation of results when this modelling approach is applied at low concentrations. Repeated metal loading cycles also gave lower values for sorption capacity compared with the maximum potential value, due to equilibrium effects. The uptake capacity for the different metals on a weight basis was in the order lead > copper > zinc > nickel, but on a molar basis this changed to copper > lead > nickel > zinc. Sorption from a multi-component metal system showed that lead and copper competed equally for binding sites and much more effectively than zinc and nickel. Equations were derived to predict the percentage effect on a given metal ion of other metals in a multi-metal system based their behaviour in the relevant single and binary systems
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Published date: November 2005
Keywords:
heavy metal, biosorption, langmuir isotherm, interaction effect
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Local EPrints ID: 53601
URI: http://eprints.soton.ac.uk/id/eprint/53601
ISSN: 0268-2575
PURE UUID: 46c681ae-a5cb-4d45-9cdf-ee6996ff9def
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Date deposited: 17 Jul 2008
Last modified: 16 Mar 2024 03:30
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