Influence of <i>Ficus religiosa</i> leaf powder on bisorption of cobalt
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Creator |
Krishna, B
Venkateswarlu, P |
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| Date |
2011-11-02T06:40:16Z
2011-11-02T06:40:16Z 2011-09 |
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| Identifier |
0975-0991 (Online); 0971-457X (Print)
http://hdl.handle.net/123456789/13033 |
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| Description |
381-390
The batch-wise biosorption of cobalt by <i style="">Ficus religiosa</i> (peepul) leaf powder has been carried out. The optimum biosorbent dosage is 60 g/L for an equilibrium agitation time of 90 min. Percentage removal of cobalt is increased from 70.9 to 97.2 (0.96 to 1.45 mg/g) with decrease in acidity in the <i style="">p</i>H range from 2 to 7. The experimental data are well represented by Freundlich (<i style="">n</i>=0.42, <i style="">K<sub>f</sub></i>=0.83 L/g, <i style="">R<sup>2</sup></i>=0.948), Langmuir (<i style="">R<sub>L</sub></i>=0.566, <i>q</i><sub>m</sub>= 3.60 mg/g, <i style="">R<sup>2</sup></i>=0.991), Redlich-Peterson(<i style="">R<sup>2</sup></i>=0.98) and Temkin (<i style="">R<sup>2</sup></i>=0.98, b<sub>T</sub> =784.52) isotherms, indicating favourable biosorption. The biosorption of Co(II) is described by the pseudo-second order rate equation (<i style="">K</i>=0.418 g/mg-min, <i style="">R<sup>2</sup></i>=0.99) preferably than first order rate equation (<i style="">R<sup>2</sup></i>=0.89). The biosorption is exothermic, irreversible and spontaneous. |
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| Language |
en_US
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| Publisher |
NISCAIR-CSIR, India
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| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
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| Source |
IJCT Vol.18(5) [September 2011]
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| Subject |
Biosorption
Cobalt <i>Ficus religiosa</i> Thermodynamics |
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| Title |
Influence of <i>Ficus religiosa</i> leaf powder on bisorption of cobalt
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| Type |
Article
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