Ultrasound-assisted heterogeneous activation of peroxymonosulphate by natural pyrite for 2,4-diclorophenol degradation in water: Synergistic effects, pathway and mechanism
文献类型：期刊论文
| 作者 | Diao, Zeng-Hui; Lin, Zi-Yu; Chen, Xi-Zhen; Yan, Liu; Dong, Fu-Xin; Qian, Wei; Kong, Ling-Jun; Du, Jian-Jun; Chu, Wei1 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2020 |
| 卷号 | 389页码:123771 |
| 关键词 | Pyrite Sulfate radicals Peroxymonosulphate Fenton reaction 2,4-dichlorophenol Ultrasound |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2019.123771 |
| 英文摘要 | In this paper, the natural pyrite was firstly used as peroxymonosulphate (PMS) activator in conjunction with ultrasonic irradiation (US) for 2,4-dichlorophenol (2,4-DCP) degradation in water. The most relevant findings indicated that a superior degradation of 2,4-DCP has been successfully achieved in pyrite/PMS/US system compared with pyrite/PMS and/or pyrite/US systems, which involved a synergistic effect between sonolysis and Fenton-like reaction. Within 120 min, nearly 98% of 2,4-DCP could be degraded at optimum reaction conditions of pyrite 1.00 g L-1, 2,4-DCP 10 mg L-1, PMS 2.00 mM and pH 4.02. A significantly enhanced PMS decomposition was probably ascribed to the sonochemistry (PMS/US and pyrite/US systems) and catalytic chemistry (pyrite/PMS system) under acidic conditions. Both SO4 center dot- and HO center dot took part in reaction process, while the SO4 center dot- was dominant for 2,4-DCP degradation. A total of six intermediate products including 3,5-dichlorocatechol, 2-chlorophenol, 4-chlorocatechol, hydroquinone, maleic acid and oxalic acid were identified using GC/MS analyses to clarify the possible degradation pathways, which involved hydroxylation and substitution reactions. Compared to other Fenton reaction systems, both maximum degradation and mineralization levels of 2,4-DCP have been obtained from pyrite/PMS/US system. This study provides an interesting insight for PMS activation by the natural mineral-based catalyst with US irradiation for in situ organic pollutants remediation. |
| 资助机构 | Hongkong Scholarship [XJ2018032]; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2018); National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21407155, 51508116]; Guangzhou Science and Technology Project [201906010070, 201704020187]; Guangdong Provincial Special Fund for Modern Agriculture Industry Technology Innovation Teams [2019KJ140] ; Hongkong Scholarship [XJ2018032]; Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme (2018); National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [21407155, 51508116]; Guangzhou Science and Technology Project [201906010070, 201704020187]; Guangdong Provincial Special Fund for Modern Agriculture Industry Technology Innovation Teams [2019KJ140] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18415]  |
| 专题 | 南海海洋研究所_中科院海洋生物资源可持续利用重点实验室 |
| 作者单位 | 1.[Diao, Zeng-Hui 2.[Diao, Zeng-Hui 3.Lin, Zi-Yu 4.Chen, Xi-Zhen 5.Yan, Liu 6.Dong, Fu-Xin 7.Qian, Wei 8.Zhongkai Univ Agr & Engn, Sch Environm Sci & Engn, Guangzhou 510225, Peoples R China 9.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China 10.Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou 510301, Peoples R China |
| 推荐引用方式 GB/T 7714 | Diao, Zeng-Hui,Lin, Zi-Yu,Chen, Xi-Zhen,et al. Ultrasound-assisted heterogeneous activation of peroxymonosulphate by natural pyrite for 2,4-diclorophenol degradation in water: Synergistic effects, pathway and mechanism[J]. CHEMICAL ENGINEERING JOURNAL,2020,389:123771. |
| APA | Diao, Zeng-Hui.,Lin, Zi-Yu.,Chen, Xi-Zhen.,Yan, Liu.,Dong, Fu-Xin.,...&Chu, Wei.(2020).Ultrasound-assisted heterogeneous activation of peroxymonosulphate by natural pyrite for 2,4-diclorophenol degradation in water: Synergistic effects, pathway and mechanism.CHEMICAL ENGINEERING JOURNAL,389,123771. |
| MLA | Diao, Zeng-Hui,et al."Ultrasound-assisted heterogeneous activation of peroxymonosulphate by natural pyrite for 2,4-diclorophenol degradation in water: Synergistic effects, pathway and mechanism".CHEMICAL ENGINEERING JOURNAL 389(2020):123771. |
入库方式： OAI收割
来源：南海海洋研究所
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