Remediation of organophosphorus pesticide polluted soil using persulfate oxidation activated by microwave
| Autor: | Jinxian Yu, Peng Zhang, Tiecheng Wang, Hanzhong Jia, Hongwen Sun, Hongshuai Kan, Guangzhou Qu |
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| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
021110 strategic defence & security studies Environmental Engineering Environmental remediation Health Toxicology and Mutagenesis 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Pesticide Persulfate Ethion 01 natural sciences Pollution Terbufos chemistry.chemical_compound Parathion chemistry Environmental chemistry Environmental Chemistry Degradation (geology) Organic matter Waste Management and Disposal 0105 earth and related environmental sciences |
| Zdroj: | Journal of hazardous materials. 401 |
| ISSN: | 1873-3336 |
| Popis: | Contaminated sites from pesticide industry have attracted global concern due to the characteristics of organic pollution with high concentrations and complete loss of habitat conditions. Remediation of organophosphorus pesticide polluted soil using microwave-activated persulfate (MW/PS) oxidation was investigated in this study, with parathion as the representative pesticide. Approximately 90 % of parathion was degraded after 90 min of MW/PS oxidation treatment, which was superior to those by single PS or MW treatment. Relatively greater performances for parathion degradation were obtained in a relatively larger PS dosage, higher microwave temperature, and lower organic matter content. Appropriate soil moisture favored parathion degradation in soil. SO4 −, OH, O2 −, and 1O2 generated in the MW/PS system all contributed to parathion degradation. Multiple spectroscopy analyses indicated that P O and P S bonds in parathion were destroyed after MW/PS oxidation, accompanied by generation of hydroxylated and carbonylated byproducts. The soil safety after parathion degradation was assessed via model prediction. Furthermore, MW/PS oxidation also exhibited great performance for degradation of other organophosphorus pesticides, including ethion, phorate, and terbufos. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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