Metadata of CSIR Papers
View Archive Info| Field | Value | |
| Creator |
Basha, S
Jaiswar, S Jha, B |
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| Subject |
Biotechnology & Applied Microbiology
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| Description |
The biosorption equilibrium isotherms of Ni(II) onto marine brown algae Lobophora variegata, which was chemically-modified by CaCl(2) were studied and modeled. To predict the biosorption isotherms and to determine the characteristic parameters for process design, twenty-three one-, two-, three-, four- and five-parameter isotherm models were applied to experimental data. The interaction among biosorbed molecules is attractive and biosorption is carried out on energetically different sites and is an endothermic process. The five-parameter Fritz-Schluender model gives the most accurate fit with high regression coefficient, R (2) (0.9911-0.9975) and F-ratio (118.03-179.96), and low standard error, SE (0.0902-0.0.1556) and the residual or sum of square error, SSE (0.0012-0.1789) values to all experimental data in comparison to other models. The biosorption isotherm models fitted the experimental data in the order: Fritz-Schluender (five-parameter) > Freundlich (two-parameter) > Langmuir (two-parameter) > Khan (three-parameter) > Fritz-Schluender (four-parameter). The thermodynamic parameters such as Delta G (0), Delta H (0) and Delta S (0) have been determined, which indicates the sorption of Ni(II) onto L. variegata was spontaneous and endothermic in nature.
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| Publisher |
SPRINGERNEW YORK233 SPRING ST, NEW YORK, NY 10013 USA
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| Date |
2011-09-20T12:03:12Z
2011-09-20T12:03:12Z 2010 |
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| Type |
Article
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| Identifier |
BIODEGRADATION
0923-9820 http://hdl.handle.net/123456789/12217 |
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| Language |
English
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