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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Environmental Science / Faculty of Environmental Earth Science >
Peer-reviewed Journal Articles, etc >
Removal of Cadmium and Chromium Ions Using Modified α, β, and γ-Cyclodextrin Polymers
| Title: | Removal of Cadmium and Chromium Ions Using Modified α, β, and γ-Cyclodextrin Polymers |
| Authors: | Sikder, Md. Tajuddin Browse this author | | Kikuchi, Tohru Browse this author | | Suzuki, Junichi Browse this author | | Hosokawa, Toshiyuki Browse this author →KAKEN DB | | Saito, Takeshi Browse this author →KAKEN DB | | Kurasaki, Masaaki Browse this author →KAKEN DB |
| Keywords: | adsorption | | cyclodextrin polymer | | epichlorohydrin | | heavy metal | | remediation |
| Issue Date: | 1-Feb-2013 |
| Publisher: | Taylor & Francis |
| Journal Title: | Separation Science and Technology |
| Volume: | 48 |
| Issue: | 4 |
| Start Page: | 587 |
| End Page: | 597 |
| Publisher DOI: | 10.1080/01496395.2012.707726 |
| Abstract: | The adsorption of cadmium and chromium from aqueous solutions with epichlorohydrin cross-linked α, β, and γ-cyclodextrin polymers (CDPs) was investigated under a wide range of experimental conditions including pH values, metal concentration, and CDP amounts. Recent studies have shown that α, β, and γ CDPs follow the Freundlich, Langmuir, and Brunauer-Emmett-Teller models and are capable of reducing heavy metal ion concentrations in water to desirable levels with enhanced sorption capabilities. The removal of cadmium and chromium achieved equilibrium in 4 h. The pH of effective cadmium removal was 6.5 to 7.5, and phosphate buffer favored the removal of cadmium in the presence of potassium ion. Chromium removal was optimal at pH 3.6 to 6.5. Current technologies can remove 99% cadmium ions from solution, yet this process is not very efficient. Furthermore, a small amount of CDPs can remove large quantities of heavy metal ions and can then be regenerated with acid for reuse. The present results are promising for using inexpensive CDPs as a low-cost material that is effective in remediating waters contaminated with heavy metal species. The sorption kinetics of CDPs along with the conditions to adsorb cadmium and chromium are reported here for the first time. |
| Rights: | This is an Author's Accepted Manuscript of an article published in Separation Science and Technology, 48(4), 2013, pages 587-597, copyright Taylor & Francis, available online at: http://www.tandfonline.com/10.1080/01496395.2012.707726 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/54525 |
| Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 藏崎 正明
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