Isotherm and Kinetics of Fe(II) Adsorption onto Chitosan in a Batch Process
| Autor: | Hamideh Radnia, Ali Asghar Ghoreyshi, Habibollah Younesi |
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| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Iranica Journal of Energy and Environment, Vol 2, Iss 3, Pp 250-257 (2011) |
| Druh dokumentu: | article |
| ISSN: | 2079-2115 2079-2123 |
| Popis: | In this study removal of Fe(II) by chitosan adsorbent was experimentally investigated in a batch system. The adsorbent dose and pH of the metal solution was fixed at 0.15 g and 4, respectively. Adsorption experiments were carried out at initial concentration range of 10–50 mg l-1 at 20˚C. Equilibrium studies showed that experimental data were well fitted to Langmuir–Freundlich isotherm model. Linear and non-linear forms of pseudo-first-order and pseudo-second-order kinetic models were employed to describe the kinetic adsorption processes. The model parameters were confidently recovered. The kinetics followed the non-linear form of pseudo-first-order model which represents adsorption of Fe(II) on chitosan takes place through a physical process. The examination of kinetic data also revealed that the adsorption rate was dominated by intra-particle diffusion mechanism. |
| Databáze: | Directory of Open Access Journals |
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