Hierarchically Active Poly(vinylidene fluoride) Membrane Fabricated by In Situ Generated Zero-Valent Iron for Fouling Reduction
文献类型：期刊论文
| 作者 | He, Zijun; Mahmud, Sakil; Zhao, Shuaifei; Yang, Yang; Zhu, Lijing; Zhao, Yubao; Zeng, Qingyi; Xiong, Zhu; Hu, Chun |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2020 |
| 卷号 | 12期号:9页码:10993-11004 |
| 关键词 | FENTON-CATALYTIC EFFICIENCY HOLLOW-FIBER MEMBRANES SODIUM-HYPOCHLORITE WATER-TREATMENT NANOFILTRATION MEMBRANES SURFACE NANOPARTICLES DEGRADATION PERFORMANCE FILTRATION |
| DOI | 10.1021/acsami.9b22147 |
| 英文摘要 | Sodium hypochlorite (NaClO) solution is a typical cleaning agent for membrane fouling. However, it can damage membrane chemical structures and produce toxic disinfection byproducts, which in turn reduces the membrane performance. This study focuses on the fabrication of active membranes thereby overcoming the limitations of chemical cleaning. A hierarchical active poly(vinylidene fluoride) membrane with polydopamine/polyethyleneimine (PEI) co-supported iron nanoparticle (Fe NP) catalysts was successfully constructed and denoted as a Fe-HP-membrane. The Fe-HP-membrane exhibited excellent advanced oxidation activity with maximum flux recoveries (similar to 85% with bovine serum albumin [BSA] and similar to 95% with humic acid [HA] solutions). After the static experiment of similar to 30 days, the BSA proteins and HA successfully desorbed from the membrane surface. Especially, with a trace amount of hydrogen peroxide (H2O2) flowing over the surface of the Fe-HP-membrane, highly exposed active Membrane cleaning showed that the "outside-to-in" active surfaces generated considerable amounts of (OH)-O-center dot radicals at the interface of BSA or HA and the fouled membrane. As a result, the unwanted foulants were successfully removed from the membrane interface, enabling multiple use of the Fe-HP-membrane. Therefore, backwashing with a small amount of H2O2 (0.33 wt %) covered similar to 20% of the flux. In contrary, backwashing with NaClO (1 wt %) can only achieve a flux recovery of similar to 10% after six consecutive BSA filtration cycles. The Fe-HP-membrane exhibited better HA foulant removal (a flux recovery of similar to 51%) after backwashing with H2O2 than using NaClO (a flux recovery of similar to 43%). Our findings demonstrate a new platform for water treatment and regeneration of fouled membranes. |
| 学科主题 | Science & Technology - Other Topics ; Materials Science |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/19891]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Xiong, Z (corresponding author), Guangzhou Univ, Minist Educ, Key Lab Water Qual & Conservat Pearl River Delta, Guangzhou 510006, Guangdong, Peoples R China. 2.Xiong, Z (corresponding author), Guangzhou Univ, Minist Educ, Inst Environm Res Greater Bay, Guangzhou 510006, Guangdong, Peoples R China. |
| 推荐引用方式 GB/T 7714 | He, Zijun,Mahmud, Sakil,Zhao, Shuaifei,et al. Hierarchically Active Poly(vinylidene fluoride) Membrane Fabricated by In Situ Generated Zero-Valent Iron for Fouling Reduction[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(9):10993-11004. |
| APA | He, Zijun.,Mahmud, Sakil.,Zhao, Shuaifei.,Yang, Yang.,Zhu, Lijing.,...&Hu, Chun.(2020).Hierarchically Active Poly(vinylidene fluoride) Membrane Fabricated by In Situ Generated Zero-Valent Iron for Fouling Reduction.ACS APPLIED MATERIALS & INTERFACES,12(9),10993-11004. |
| MLA | He, Zijun,et al."Hierarchically Active Poly(vinylidene fluoride) Membrane Fabricated by In Situ Generated Zero-Valent Iron for Fouling Reduction".ACS APPLIED MATERIALS & INTERFACES 12.9(2020):10993-11004. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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。