The role of interactions between extracellular organic matter and humic substances on coagulation-ultrafiltration process
文献类型：期刊论文
| 作者 | Liang, Huikai; Xu, Weiying; Shi, Baoyou ; Huang, Xin
|
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2021-02 |
| 卷号 | 264页码:- |
| 关键词 | M. aeruginosa Humic acid Aluminum sulfate Membrane fouling Water treatment |
| ISSN号 | 0045-6535 |
| 英文摘要 | Removals of extracellular organic matter (EOM) derived from cyanobacterium M. aeruginosa and humic acid (HA) in single-component and bi-component systems and the interactions during the coagulation-ultrafiltration (C-UF) process were investigated in this study. In a single-component system, only 23% EOM could be removed by alum at dose as high as 6 mg/L, which induced serious membrane fouling in the following UF process. Interestingly, higher EOM removal efficiency was achieved (increase by about 20%) with the existence of HA and EOM-HA achieved less decline of permeate flux compared with individual EOM C-UF process. Zeta potential and Fourier transform infrared spectroscopy analysis indicated that the interactions of HA and EOM can strengthen charge neutralization and reduce CH2 chemical bonds, which had a positive effect on the coagulation process. In addition, EOM-HA floc had a more open and looser structure than EOM floc, which was more favorable in the UF process. The extended Derjaguin -Landau-Verwey-Overbeek theory indicated that the acid-base interaction energy was mainly reduced, thereby alleviating membrane fouling. The study showed this beneficial interaction between the HA and EOM would enhance the EOM removal efficacy by coagulation and release the membrane fouling caused by EOM. (C) 2020 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46268]  |
| 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 |
| 作者单位 | 1.Univ Jinan, Sch Water Conservancy & Environm, Jinan 250022, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, 18 Shuangqing Rd, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, Huikai,Xu, Weiying,Shi, Baoyou,et al. The role of interactions between extracellular organic matter and humic substances on coagulation-ultrafiltration process[J]. CHEMOSPHERE,2021,264:-. |
| APA | Liang, Huikai,Xu, Weiying,Shi, Baoyou,&Huang, Xin.(2021).The role of interactions between extracellular organic matter and humic substances on coagulation-ultrafiltration process.CHEMOSPHERE,264,-. |
| MLA | Liang, Huikai,et al."The role of interactions between extracellular organic matter and humic substances on coagulation-ultrafiltration process".CHEMOSPHERE 264(2021):-. |
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。