Development of a novel electrocoagulation membrane reactor with electrically conductive membranes as cathode to mitigate membrane fouling
文献类型：期刊论文
| 作者 | Xu, Li Li; Liu, Lie; Wang, Kun Peng; Zhao, Shi Yu; Liu, Qin Yi; Zhang, Yong; Wang, Jun |
| 刊名 | JOURNAL OF MEMBRANE SCIENCE
 |
| 出版日期 | 2021-01-15 |
| 卷号 | 618页码:- |
| 关键词 | Electrocoagulation membrane reactor Electrically conductive membranes Membrane fouling Electrostatic repulsion Cake layer |
| ISSN号 | 0376-7388 |
| 英文摘要 | This study developed a novel electrocoagulation membrane reactor (ECR-ECM), an integrated system embracing electrocoagulation and membrane filtration in one individual reactor, by applying electric field to the electrically conducting membranes. Some key operational conditions (e.g. current density, pH and applied voltage) were systematically investigated to determine the synergistic influence of coagulation and electric field on the reactor performance. It was found that ECR-ECM showed the lowest flux decline (20.8%) in comparison with EC-UF (27.6%) and UF alone (41.3%) after filtration, suggesting that ECR-ECM exhibited the optimal antifouling behaviour. The increase of pH from 4 to 10 played a positive effect on the fouling mitigation by improving the electrostatic repulsive force between negatively charged pollutants and membranes. Improvement of current density from 5 to 10 A/m(2) facilitated the generation of aluminum coagulant as well as bubbles, and therefore promoted the aggregation of foulants and reduced membrane fouling. Increasing applied voltage from 0 to 2.5 V led to a stronger repulsion force which have an ability to prevent the negatively charged foulants from accumulating on the membrane surface. This generated a much looser fouling layer, leading to a decreased flux decline. Importantly, the increased porosity and reduced resistance of membrane fouling layer under applied voltage was further confirmed through the calculation using Kozeny-Carman equation. This study provides a simple and feasible strategy for the fabrication of a novel electrocoagulation membrane reactor which has potential in solving membrane fouling problems with a more compact design. |
| WOS研究方向 | Engineering, Chemical ; Polymer Science |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45928]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Natl Engn Lab Ind Wastewater Treatment, 18 Shuangqing Rd, Beijing 100085, Peoples R China 2.China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100083, Peoples R China 3.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China 4.Wuhan Text Univ, Sch Mat Sci & Engn, Wuhan 430200, Peoples R China 5.Hubei Univ, Sch Mat Sci & Engn, Wuhan 430062, Peoples R China 6.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, 18 Shuangqing Rd, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Li Li,Liu, Lie,Wang, Kun Peng,et al. Development of a novel electrocoagulation membrane reactor with electrically conductive membranes as cathode to mitigate membrane fouling[J]. JOURNAL OF MEMBRANE SCIENCE,2021,618:-. |
| APA | Xu, Li Li.,Liu, Lie.,Wang, Kun Peng.,Zhao, Shi Yu.,Liu, Qin Yi.,...&Wang, Jun.(2021).Development of a novel electrocoagulation membrane reactor with electrically conductive membranes as cathode to mitigate membrane fouling.JOURNAL OF MEMBRANE SCIENCE,618,-. |
| MLA | Xu, Li Li,et al."Development of a novel electrocoagulation membrane reactor with electrically conductive membranes as cathode to mitigate membrane fouling".JOURNAL OF MEMBRANE SCIENCE 618(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。