TiO2@MOF Photocatalyst for the Synergetic Oxidation of Microcystin-LR and Reduction of Cr(VI) in Aqueous Media
文献类型：期刊论文
| 作者 | Wang, Yarui; Yu, Wanchao; Geng, Fanglan; Zhao, Lixia; Wang, Yawei |
| 刊名 | CATALYSTS
 |
| 出版日期 | 2021-10 |
| 卷号 | 283页码:- |
| 关键词 | Bacterial community Antibiotic resistance genes Extracellular polymeric substances Drinking water distribution systems H2O2-GAC filtration |
| ISSN号 | 0045-6535 |
| 英文摘要 | Effects of sulfadiazine on bacterial community and antibiotic resistance genes (ARGs) in drinking water distribution systems (DWDSs) were investigated in this study. Three DWDSs, including sand filtered (SF) DWDSs, granular active carbon (GAC) filtration DWDSs, and UV/H2O2-GAC DWDSs, were used to deliver sand filtered water, GAC filtered water, and UV/H2O2-GAC treated water, respectively. UV/H2O2-GAC filtration can remove the dissolved organic matter effectively, which resulted in the lowest bacterial diversity, biomass and ARGs in effluents and biofilm of DWDSs. When sulfadiazine was added to the sand filtered water, the dehydrogenase concentration and bacterial activity of bacterial community increased in effluents and biofilm of different DWDSs, inducing more extracellular polymeric substances (EPS) production. The proteins increasement percentage was 26.9%, 11.7% and 19.1% in biofilm of three DWDSs, respectively. And the proteins increased to 830.30 +/- 20.56 mu g cm- 2, 687.04 +/- 18.65 mu g cm-2 and 586.07 +/- 16.24 mu g cm-2, respectively. The increase of EPS promoted biofilm formation and increased the chlorine-resistance capability of bacteria. Therefore, the relative abundance of Clostridium_sensu_stricto_1 increased to 12.22%, 10.41% and 0.33% in biofilm of the three DWDSs, respectively. Candidatus_Odyssella also increased in the effluents and biofilm of the three DWDSs. These antibiotic resistance bacteria increase in DWDSs also induced the ARGs promotion, including sul1, sul2, sul3, mexA and class 1 integrons (int1). However, UV/H2O2-GAC filtration induced the lowest increase of dehydrogenase and EPS production through sulfadiazine removal efficiently, resulting in the least bacterial community change and ARGs promotion in UV/H2O2-GAC DWDSs. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/46829]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, 18 Shuangqing Rd,POB 2871, Beijing 100085, Peoples R China 3.UCAS, Hangzhou Inst Adv Study, Sch Environm, Hangzhou 310007, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yarui,Yu, Wanchao,Geng, Fanglan,et al. TiO2@MOF Photocatalyst for the Synergetic Oxidation of Microcystin-LR and Reduction of Cr(VI) in Aqueous Media[J]. CATALYSTS,2021,283:-. |
| APA | Wang, Yarui,Yu, Wanchao,Geng, Fanglan,Zhao, Lixia,&Wang, Yawei.(2021).TiO2@MOF Photocatalyst for the Synergetic Oxidation of Microcystin-LR and Reduction of Cr(VI) in Aqueous Media.CATALYSTS,283,-. |
| MLA | Wang, Yarui,et al."TiO2@MOF Photocatalyst for the Synergetic Oxidation of Microcystin-LR and Reduction of Cr(VI) in Aqueous Media".CATALYSTS 283(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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