Removal of Ni (II) from aqueous solutions by adsorption onto <i style="">Cajanus cajan L </i>Milsp seed shell activated carbons
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Creator |
Thamilarasu, P
Sivakumar, P Karunakaran, K |
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| Date |
2011-11-02T06:41:51Z
2011-11-02T06:41:51Z 2011-09 |
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| Identifier |
0975-0991 (Online); 0971-457X (Print)
http://hdl.handle.net/123456789/13036 |
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| Description |
414-420
The adsorptive removal of Ni(II) from aqueous solution using <i>Cajanus cajan L </i>Milsp seed shells activated carbon (CCC) and polypyrrole coated <i>Cajanus cajan L </i>Milsp seed shells activated carbon (PPy/CCC) has been carried out under various experimental conditions. Quantity of Ni(II) uptake at 50 mg of activated carbon is 25.75 mg/g for CCC and 29.60 mg/g for PPy/CCC. Adsorption data are modeled with Freundlich, Langmuir and Temkin adsorption isotherms. Thermodynamics parameters, such as <img src='/image/spc_char/delta.gif' border=0>H<sup>o</sup>, <img src='/image/spc_char/delta.gif' border=0>S<sup>o</sup>, and <img src='/image/spc_char/delta.gif' border=0>G<sup>o </sup>have been calculated and the findings indicate that the adsorption is spontaneous and endothermic. Enthalpy change values range from 8.90 kJ/mol to 23.04 kJ/mol, and based on these values the adsorption of Ni(II) by CCC could be a physisorption. A mechanism involving intra particle diffusion and surface adsorption has been proposed for the adsorption of Ni(II) onto the adsorbent. Adsorbent used in this study is also characterized by FT-IR and SEM before and after the adsorption of metal ions. |
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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 |
Activated carbon
Adsorption <i>Cajanus cajan L</i> Isotherm Kinetics Nickel(II) |
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| Title |
Removal of Ni (II) from aqueous solutions by adsorption onto <i style="">Cajanus cajan L </i>Milsp seed shell activated carbons
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| Type |
Article
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