Studies on Anion Exchange Membrane and Interface Properties by Electrochemical Impedance Spectroscopy: The Role of pH
文献类型：期刊论文
| 作者 | Zhang, Wenjuan; Cheng, Wei; Tufa, Ramato Ashu; Liu, Caihong; Aili, David; Chanda, Debabrata; Chang, Jing; Wang, Shaopo; Zhang, Yufeng; Ma, Jun |
| 刊名 | MEMBRANES
 |
| 出版日期 | 2021-10 |
| 卷号 | 9期号:5页码:- |
| 关键词 | Ultrafiltration Flocs Integrated progress Rotation of module Fouling reduction |
| 英文摘要 | The modules of ultrafiltration (UF) membrane always occupy a fixed position during filtration. This results in a gradual aggravation of membrane fouling because of the continuous pollutants deposition. However, it is known that the cake layer is composed of loosely hydrolyzed flocs. Therefore, in this study, the rotation concept of membrane-module was investigated in conjunction with the integrated floc (Fe-based)-UF process. We found that the Fe-based flocs can be easily peeled off the membrane surface during rotation, and the UF membrane fouling was alleviated, particularly with spiral module rotation because of the strong shearing force induced. The fouling behavior after spiral module rotation was similar for different floc dosages because of the looseness cake layer formed. The applied computational fluid dynamics model showed that a greater spiral rotation height corresponded to a larger water velocity distribution and stronger shearing force in the membrane tank, and this resulted in a reduction in the fouling degree due to the thinner cake layer formed. Moreover, in comparison with alkaline conditions, a slightly more severe fouling degree was observed under acidic conditions because of the induced denser cake layer with smaller Fe-based floc sizes; however, a significantly higher humic-acid removal efficiency was observed. In addition, UF membrane performed well with river water samples taken from the South-to-North water diversion project in China (Beijing), thereby indicating the rotating module potential application in membrane-based drinking water treatment. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/46924]  |
| 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.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China 2.Henan Univ, Coll Chem & Chem Engn, Kaifeng 475004, Peoples R China 3.Chongqing Univ, Minist Educ, Key Lab Ecoenvironm Three Gorges Reservoir Reg, Coll Environm & Ecol, Chongqing 400044, Peoples R China 4.Tech Univ Denmark, Dept Energy Convers & Storage, Bldg 310, DK-2800 Lyngby, Denmark 5.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 6.Tianjin Chengjian Univ, Tianjin Key Lab Aquat Sci & Technol, Sch Environm & Municipal Engn, Tianjin 300384, Peoples R China 7.[Ma, Jun |
| 推荐引用方式 GB/T 7714 | Zhang, Wenjuan,Cheng, Wei,Tufa, Ramato Ashu,et al. Studies on Anion Exchange Membrane and Interface Properties by Electrochemical Impedance Spectroscopy: The Role of pH[J]. MEMBRANES,2021,9(5):-. |
| APA | Zhang, Wenjuan.,Cheng, Wei.,Tufa, Ramato Ashu.,Liu, Caihong.,Aili, David.,...&Ma, Jun.(2021).Studies on Anion Exchange Membrane and Interface Properties by Electrochemical Impedance Spectroscopy: The Role of pH.MEMBRANES,9(5),-. |
| MLA | Zhang, Wenjuan,et al."Studies on Anion Exchange Membrane and Interface Properties by Electrochemical Impedance Spectroscopy: The Role of pH".MEMBRANES 9.5(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。