A comparative study on the kinetics and mechanisms of removal of Reactive Black 5 by adsorption onto activated carbons and bone char
| Autor: | Alvin W. M. Ip, Gordon McKay, John P. Barford |
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| Rok vydání: | 2010 |
| Předmět: |
Bone char
Chemistry General Chemical Engineering Diffusion Kinetics Mineralogy Biomaterial General Chemistry Industrial and Manufacturing Engineering chemistry.chemical_compound Adsorption Chemical engineering Specific surface area medicine Environmental Chemistry Reactive dye Activated carbon medicine.drug |
| Zdroj: | Chemical Engineering Journal. 157:434-442 |
| ISSN: | 1385-8947 |
| DOI: | 10.1016/j.cej.2009.12.003 |
| Popis: | The adsorption of a large reactive dye, Reactive Black 5, onto four adsorbents has been studied. A commercial active carbon, F400, was selected as a standard and two active carbons prepared from bamboo, a biomaterial. The two bamboo derived carbons, BACX2 and BACX6 had high specific surface areas, namely, 2123 and 1400 m2/g, respectively. A fourth widely used adsorbent, bone char, was also tested. The adsorption capacities for F400, bone char, BACX2 and BACX6 were 198, 160, 286 and 473 mg/g, respectively. A series of batch kinetics were carried out to investigate the rate and possible mechanism of Reactive Black 5 adsorption. Two pseudo-kinetic models and one intraparticle diffusion model were tested. The experimental concentration versus time decay curves were best explained by the intraparticle diffusion model. |
| Databáze: | OpenAIRE |
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