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Degradation of pentachlorophenol in contaminated soil suspensions by potassium monopersulfate catalyzed oxidation by a supramolecular complex between tetra(p-sulfophenyl)porphineiron(III) and hydroxypropyl-β-cyclodextrin.
| Title: | Degradation of pentachlorophenol in contaminated soil suspensions by potassium monopersulfate catalyzed oxidation by a supramolecular complex between tetra(p-sulfophenyl)porphineiron(III) and hydroxypropyl-β-cyclodextrin. |
| Authors: | Fukushima, Masami1 Browse this author →KAKEN DB | | Tatsumi, Kenji Browse this author |
| Authors(alt): | 福嶋, 正巳1 |
| Keywords: | Pentachlorophenol | | Soil remediation | | Iron(III)-porphyrin | | Hydroxypropyl-β-cyclodextrin | | Supramolecular complex |
| Issue Date: | 1-Jun-2007 |
| Publisher: | Elsevier B.V. |
| Journal Title: | Journal of Hazardous Materials |
| Volume: | 144 |
| Issue: | 1-2 |
| Start Page: | 222 |
| End Page: | 228 |
| Publisher DOI: | 10.1016/j.jhazmat.2006.10.013 |
| PMID: | 17101215 |
| Abstract: | To enhance the catalytic oxidation of pentachlorophenol (PCP) in contaminated soil suspensions using tetra(p-sulfophenyl)porphineiron(III) (Fe(III)-TPPS) as a catalyst and potassium monopersulfate (KHSO5) as the single-oxygen donor, the effect of added hydroxypropyl-β-cyclodextrin (HP-β-CD) was examined. At pH 4 and 6, the percentage of PCP disappearance increased substantially in the presence of HP-β-CD. In addition, the self-degradation of Fe(III)-TPPS was significantly retarded in the presence of HP-β-CD. This retarded self-degradation can be attributed to the stabilization of Fe(III)-TPPS via the formation of a supramolecular complex with HP-β-CD. The kinetic constant for the self-degradation of Fe(III)-TPPS in the presence of HP-β-CD at pH 6 was much smaller than that at pH 4, indicating that Fe(III)-TPPS is more stable at pH 6. Thus, the amount of Fe(III)-TPPS, KHSO5 and HP-β-CD required to degrade PCP in contaminated soil suspensions was optimal at pH 6. When PCP-contaminated soil suspensions were treated under the optimized conditions, 12–18% and 24–28% of the PCP was mineralized to CO2 in the absence and presence of HP-β-CD, respectively. These results show that the presence of HP-β-CD in the Fe(III)-TPPS/KHSO5 catalytic system is effective in enhancing the degradation of PCP in contaminated soil suspensions. |
| Relation: | http://www.sciencedirect.com/science/journal/03043894 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/28125 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 福嶋 正巳
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