Heterogeneous degradation of chloramphenicol antibiotic by peroxymonosulfate activated by FeS and FeS2: Mechanism and effects of catalysts dosage and pH
文献类型：期刊论文
| 作者 | Xu, Hengduo2,3; Wang, Hankun1,3; Wang, Wenjing3; Liu, Qunqun3; Li, Zhaoran3; Sheng, Yanqing2,3
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| 刊名 | JOURNAL OF WATER PROCESS ENGINEERING
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| 出版日期 | 2024-09-01 |
| 卷号 | 66页码:9 |
| 关键词 | Peroxymonosulfate FeS Antibiotic Sulfate radicals FeS2 |
| ISSN号 | 2214-7144 |
| DOI | 10.1016/j.jwpe.2024.106056 |
| 通讯作者 | Sheng, Yanqing(yqsheng@yic.ac.cn) |
| 英文摘要 | Antibiotics in the environmental waters pose long-term threat to ecological safety because of their persistent and potential toxic nature. FeS and FeS2 were proved to be efficient catalysts for the activation of peroxymonosulfate (PMS) and the generation of sulfate radical generation for refractory pollutant degradation. However, their performance for antibiotic degradation has not yet been comparatively and comprehensively investigated. Herein, the FeS/PMS and FeS2/PMS systems were developed to explore chloramphenicol (CAP) degradation under equal conditions. The results show that CAP was efficiently degraded in both two systems, with a removal efficiency exceeding 90 % within 120 min using 6 mM PMS and 0.6 g/L catalysts. Acceleration in degradation rate was observed in the FeS2/PMS system when the catalyst dosage ranged from 0.1 g/L to 1.0 g/L (constant PMS concentration) with a reaction rate constant (k(obs)) of 2.1-fold higher than that in the FeS/PMS system. However, the k(obs) were comparable with the PMS concentration range (constant catalyst dosage) in the two systems, suggesting that the catalysts were the rate-limiting step in CAP degradation process. The initial pH strongly affected CAP degradation in the FeS/PMS system but had little effect on that in the FeS2/PMS system. Surface Fe2+ played a dominant role in PMS activation, and S-2(2-)/S2- facilitated Fe2+ regeneration. Further, both FeS and FeS2 had stable activity for PMS activation during long-term use. This study proves the effectiveness of FeS and FeS2 for PMS activation for antibiotic degradation and differentiates their catalytic qualities, which will provide alternative heterogeneous catalysts for practical application. |
| WOS关键词 | ORGANIC CONTAMINANTS ; PERSULFATE OXIDATION ; AQUEOUS-SOLUTION ; IRON ; CHLOROANILINE ; MACKINAWITE ; POLLUTANTS ; REMOVAL ; TRANSFORMATION ; NANOPARTICLES |
| WOS研究方向 | Engineering ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001317112800001 |
| 资助机构 | Natural Science Foundation of China ; Key R &D Program of Shandong Province, China |
| 源URL | [http://ir.yic.ac.cn/handle/133337/35601]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 烟台海岸带研究所_山东省海岸带环境工程技术研究中心 |
| 通讯作者 | Sheng, Yanqing |
| 作者单位 | 1.Harbin Engn Univ, Yantai Res Inst, Yantai 264003, Peoples R China 2.Shandong Acad Environm Planning, Key Lab Land & Sea Ecol Governance & Systemat Regu, Jinan 250101, Peoples R China 3.Chinese Acad Sci, Shandong Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Hengduo,Wang, Hankun,Wang, Wenjing,et al. Heterogeneous degradation of chloramphenicol antibiotic by peroxymonosulfate activated by FeS and FeS2: Mechanism and effects of catalysts dosage and pH[J]. JOURNAL OF WATER PROCESS ENGINEERING,2024,66:9. |
| APA | Xu, Hengduo,Wang, Hankun,Wang, Wenjing,Liu, Qunqun,Li, Zhaoran,&Sheng, Yanqing.(2024).Heterogeneous degradation of chloramphenicol antibiotic by peroxymonosulfate activated by FeS and FeS2: Mechanism and effects of catalysts dosage and pH.JOURNAL OF WATER PROCESS ENGINEERING,66,9. |
| MLA | Xu, Hengduo,et al."Heterogeneous degradation of chloramphenicol antibiotic by peroxymonosulfate activated by FeS and FeS2: Mechanism and effects of catalysts dosage and pH".JOURNAL OF WATER PROCESS ENGINEERING 66(2024):9. |
入库方式： OAI收割
来源：烟台海岸带研究所
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