The effects of hydrogen peroxide pre-oxidation on ultrafiltration membrane biofouling alleviation in drinking water treatment
文献类型：期刊论文
| 作者 | Qu, Jiuhui ; Liu, Huijuan; Lan, Huachun; Bai, Yaohui; Ma, Baiwen; Wang, Xing
|
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2018-11-01 |
| 卷号 | 73页码:117-126 |
| 关键词 | Ultrafiltration membrane Hydrogen peroxide Fouling alleviation Extracellular polymeric substances Microbial community |
| ISSN号 | 1001-0742 |
| 文献子类 | Article |
| 英文摘要 | Pre-oxidation is widely used to reduce ultrafiltration membrane fouling. However, the variation in the composition of microbial communities and extracellular polymeric substances (EPSs) accompanying pre-oxidation in drinking water treatment has received little attention. In this study, hydrogen peroxide (H2O2) was used in a coagulation-ultrafiltration process with Al-2(SO4)(3)center dot 18H(2)O. A long-term reactor experiment (60 d) showed that pre-oxidation alleviated membrane fouling, mainly due to its inhibition of microbial growth, as observed by flow cytometry measurements of the membrane tank water. Further analysis of the formed cake layer demonstrated that the corresponding levels of EPS released from the microbes were lower with than without H2O2 treatment. In comparison to polysaccharides, proteins dominated the EPS. 2D-electrophoresis showed little difference (p > 0.05, Student's t-test) in the composition of proteins in the cake layer between the treatments with and without H2O2. The molecular weights of proteins ranged from approximately 30-50 kDa and the majority of isoelectric points ranged from 6 to 8. High-throughput sequencing showed that the predominant bacteria were Proteobacteria, Bacteroidetes, and Verrucomicrobia in both cake layers. However, the relative abundance of Planctomycetes was higher in the cake layer with H2O2 pre-oxidation, which was likely probably due to the strong oxidative resistance of its cell wall. Overall, our findings clarify the fundamental molecular mechanism in H2O2 pre-oxidation for ultrafiltration membrane bio-fouling alleviation in drinking water treatment. (C) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41422]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Qu, Jiuhui,Liu, Huijuan,Lan, Huachun,et al. The effects of hydrogen peroxide pre-oxidation on ultrafiltration membrane biofouling alleviation in drinking water treatment[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2018,73:117-126. |
| APA | Qu, Jiuhui,Liu, Huijuan,Lan, Huachun,Bai, Yaohui,Ma, Baiwen,&Wang, Xing.(2018).The effects of hydrogen peroxide pre-oxidation on ultrafiltration membrane biofouling alleviation in drinking water treatment.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,73,117-126. |
| MLA | Qu, Jiuhui,et al."The effects of hydrogen peroxide pre-oxidation on ultrafiltration membrane biofouling alleviation in drinking water treatment".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 73(2018):117-126. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。