Fouling mitigation of a graphene hydrogel membrane electrode by electrical repulsion and in situ self-cleaning in an electro-membrane reactor
文献类型：期刊论文
| 作者 | Sun, Jingqiu; Hu, Chengzhi; Wu, Baichun; Qu, Jiuhui
|
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2020-08-01 |
| 卷号 | 393页码:1-8 |
| 关键词 | Electrochemical water treatment Electrically conducting Electrostatic repulsion Electro-oxidation |
| ISSN号 | 1385-8947 |
| 英文摘要 | The conductive membrane can improve water flux and selectivity when it is employed as a membrane electrode. However, stability of the membrane structure during electro-filtration is still a challenge. In this study, a conductive graphene hydrogel membrane (GHM) was fabricated by compaction of a graphene hydrogel under external pressure. The pore size of GHM was stable at similar to 100 nm under anodic oxidation and cathodic reduction state, which was beneficial for long term electro-control of membrane fouling. When the GHM was negatively charged, membrane fouling was mainly reduced by electrical repulsion, and in situ electro-oxidation played a primary role in the self-cleaning to recover water flux. The water flux of the GHM electrode with a bias of -1 V was 10% higher than that of the GHM without applied bias. After fouled by bovine serum albumin (BSA), the flux recovery ratio of GHM electrode could maximally achieve 99.0 +/- 1.4% by the self-cleaning, indicating that almost all the foulants were removed from the GHM. Lower foulant concentration, higher electrolyte concentration, and longer self-cleaning time were beneficial to recover the flux. These findings provide a foundation for the development and application of the electro-membrane reactor (EMR) system using conductive membranes. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44942]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Sun, Jingqiu,Hu, Chengzhi,Wu, Baichun,et al. Fouling mitigation of a graphene hydrogel membrane electrode by electrical repulsion and in situ self-cleaning in an electro-membrane reactor[J]. CHEMICAL ENGINEERING JOURNAL,2020,393:1-8. |
| APA | Sun, Jingqiu,Hu, Chengzhi,Wu, Baichun,&Qu, Jiuhui.(2020).Fouling mitigation of a graphene hydrogel membrane electrode by electrical repulsion and in situ self-cleaning in an electro-membrane reactor.CHEMICAL ENGINEERING JOURNAL,393,1-8. |
| MLA | Sun, Jingqiu,et al."Fouling mitigation of a graphene hydrogel membrane electrode by electrical repulsion and in situ self-cleaning in an electro-membrane reactor".CHEMICAL ENGINEERING JOURNAL 393(2020):1-8. |
入库方式： OAI收割
来源：生态环境研究中心
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