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Title: | ACTIVATED CARBON FROM INDUSTRIAL SOLID WASTE AS AN ADSORBENT FOR THE REMOVAL OF RHODAMINE-B FROM AQUEOUS SOLUTION: KINETIC AND EQUILIBRIUM STUDIES |
Authors: | Kadirvelu, K Karthika, C Vennilamani, N Pattabhi, S |
Issue Date: | Aug-2005 |
Publisher: | Elsevier |
Abstract: | The activated carbon was prepared using industrial solid waste called sago waste and physico-chemical properties of carbon were carried out to explore adsorption process. The effectiveness of carbon prepared from sago waste in adsorbing Rhodamine-B from aqueous solution has been studied as a function of agitation time, adsorbent dosage, initial dye concentration, pH and desorption. Adsorption equilibrium studies were carried out in order to optimize the experimental conditions. The adsorption of Rhodamine-B onto carbon followed second order kinetic model. Adsorption data were modeled using both Langmuir and Freundlich classical adsorption isotherms. The adsorption capacity Q0 was 16.12 mg g−1 at initial pH 5.7 for the particle size 125–250 μm. The equilibrium time was found to be 150 min for 10, 20 mg l−1 and 210 min for 30, 40 mg l−1 dye concentrations, respectively. A maximum removal of 91% was obtained at natural pH 5.7 for an adsorbent dose of 100 mg/50 ml of 10 mg l−1 dye concentration and 100% removal was obtained when the pH was increased to 7 for an adsorbent dose of 275 mg/50 ml of 20 mg l−1 dye concentration. Desorption studies were carried out in water medium by varying the pH from 2 to 10. Desorption studies were performed with dilute HCl and show that ion exchange is predominant dye adsorption mechanism. This adsorbent was found to be both effective and economically viable. |
URI: | https://doi.org/10.1016/j.chemosphere.2005.01.047 |
Appears in Collections: | 2.Article (05) |
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ACTIVATED CARBON FROM INDUSTRIAL SOLID WASTE AS AN ADSORBENT FOR THE REMOVAL OF RHODAMINE-B FROM AQUEOUS SOLUTION KINETIC AND EQUILIBRIUM STUDIES.docx | 214.49 kB | Microsoft Word XML | View/Open |
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