Kinetic Models of the Adsorption of Hexavalent Chromium by Chitosan from Aqueous Solution
The batch removal of hexavalent chromium from aqueous solution by chitosan under different experimental conditions, such as the pH value and the initial hexavalent chromium ion concentration, was investigated. The adsorption of hexavalent chromium is highly pH-dependent, the results obtained in the...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2009-11-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.27.9.835 |
| _version_ | 1826905268291633152 |
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| author | JinLong Yan Guixiang Quan |
| author_facet | JinLong Yan Guixiang Quan |
| author_sort | JinLong Yan |
| collection | DOAJ |
| description | The batch removal of hexavalent chromium from aqueous solution by chitosan under different experimental conditions, such as the pH value and the initial hexavalent chromium ion concentration, was investigated. The adsorption of hexavalent chromium is highly pH-dependent, the results obtained in the present study indicating that the optimum pH for Cr(VI) ion removal was 4.0. The kinetics of the adsorption of Cr(VI) ions by chitosan were evaluated by the pseudo-first-order, pseudo-second-order, Elovich and intra-particle diffusion kinetic models, respectively. The results show that the pseudo-second-order kinetic model gave a good correlation (r 2 = 0.9942) with the experimental data. |
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| id | doaj.art-1e5cb5c7039346d1ac4ce8b7cd9b5f0d |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2025-02-17T08:25:29Z |
| publishDate | 2009-11-01 |
| publisher | SAGE Publishing |
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| series | Adsorption Science & Technology |
| spelling | doaj.art-1e5cb5c7039346d1ac4ce8b7cd9b5f0d2025-01-02T22:39:31ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382009-11-012710.1260/0263-6174.27.9.835Kinetic Models of the Adsorption of Hexavalent Chromium by Chitosan from Aqueous SolutionJinLong YanGuixiang QuanThe batch removal of hexavalent chromium from aqueous solution by chitosan under different experimental conditions, such as the pH value and the initial hexavalent chromium ion concentration, was investigated. The adsorption of hexavalent chromium is highly pH-dependent, the results obtained in the present study indicating that the optimum pH for Cr(VI) ion removal was 4.0. The kinetics of the adsorption of Cr(VI) ions by chitosan were evaluated by the pseudo-first-order, pseudo-second-order, Elovich and intra-particle diffusion kinetic models, respectively. The results show that the pseudo-second-order kinetic model gave a good correlation (r 2 = 0.9942) with the experimental data.https://doi.org/10.1260/0263-6174.27.9.835 |
| spellingShingle | JinLong Yan Guixiang Quan Kinetic Models of the Adsorption of Hexavalent Chromium by Chitosan from Aqueous Solution Adsorption Science & Technology |
| title | Kinetic Models of the Adsorption of Hexavalent Chromium by Chitosan from Aqueous Solution |
| title_full | Kinetic Models of the Adsorption of Hexavalent Chromium by Chitosan from Aqueous Solution |
| title_fullStr | Kinetic Models of the Adsorption of Hexavalent Chromium by Chitosan from Aqueous Solution |
| title_full_unstemmed | Kinetic Models of the Adsorption of Hexavalent Chromium by Chitosan from Aqueous Solution |
| title_short | Kinetic Models of the Adsorption of Hexavalent Chromium by Chitosan from Aqueous Solution |
| title_sort | kinetic models of the adsorption of hexavalent chromium by chitosan from aqueous solution |
| url | https://doi.org/10.1260/0263-6174.27.9.835 |
| work_keys_str_mv | AT jinlongyan kineticmodelsoftheadsorptionofhexavalentchromiumbychitosanfromaqueoussolution AT guixiangquan kineticmodelsoftheadsorptionofhexavalentchromiumbychitosanfromaqueoussolution |