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Title of Journal: Biotechnol Bioproc E

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Abbravation: Biotechnology and Bioprocess Engineering

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The Korean Society for Biotechnology and Bioengineering

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DOI

10.1002/pip.2550

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1976-3816

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Two metal biosorption of chromium and copper by Ca

Authors: Hak Sung Lee
Publish Date: 2014/09/17
Volume: 19, Issue: 4, Pages: 696-702
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Abstract

Cu and Cr sorption capacities of Caloaded Laminaria japonica biomass were studied using an equilibrium methodology and evaluation of the sorption performance and modeling in a twometal system was carried out with a modified multicomponent Langmuir isotherm The maximum Cu and Cr uptakes calculated from the Langmuir isotherm were 159 mmol/g 101 wt and 181 mmol/g 94 wt at pH 45 respectively The desorption efficiency of the Crsorbed L japonica was approximately 5 for 8 h in the 01 N HNO3 solution while that of Cusorbed L japonica was more than 99 in the 01 N HNO3 solution The modified Langmuir model gave the following affinity correlated coefficients 112 for Cu and 731 for Cr at pH 45 The interference of Cr with Cu biosorptive uptake was assessed by ‘cutting’ the three dimensional uptake isotherm surfaces at constant secondmetal final concentrations Equimolar final equilibrium concentrations of Cu and Cr of 1 mM at pH 45 reduced Cu and Cr uptakes by 755 and 110 respectively


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