Study on hypochlorite degradation of aromatic polyamide reverse osmosis membrane
文献类型：期刊论文
| 作者 | Kang, Guo-Dong; Gao, Cong-Jie; Chen, Wei-Dong; Jie, Xing-Ming; Cao, Yi-Ming; Yuan, Quan |
| 刊名 | journal of membrane science
 |
| 出版日期 | 2007-08-15 |
| 卷号 | 300期号:1-2页码:165-171 |
| 关键词 | polyamide membrane degradation mechanism chlorine resistance surface coating |
| 英文摘要 | a serious limitation of most commercial polyamide reverse osmosis (ro) membranes is their sensitivity to chlorine attack. by studying the hypochlorite degradation of aromatic polyamide ro membrane, this work was to get some understandings in the prevention of membrane depreciation and develop membranes with improved chlorine resistance. membrane performances, including water flux and salt rejection, were evaluated before and after hypochlorite exposure under different ph and concentration conditions. the results showed that chlorination destroyed hydrogen bonds in polyamide chains, causing a notable decline of membrane flux especially in acid environment; however, membrane performance was slightly improved after the treatment of alkaline hypochlorite solution for a certain time, which was probably due to the effect of amine groups in barrier layer. based on the attenuated total reflectance fourier transform infrared spectroscopy (atr-ftir) characterizations and performance measurements, the results indicated that n-chlorination reaction of aromatic polyamide was also reversible, ill other words, the n-chlorinated intermediate could be regenerated to initial amide with the alkaline treatment before ring-chlorination reaction. this conclusion provided several relative suggestions for membrane cleaning procedures. finally, a method adopting surface coating was proposed to develop membranes with good chlorine resistance, and the preliminary results showed its potential for applications. (c) 2007 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; technology ; physical sciences |
| 类目[WOS] | engineering, chemical ; polymer science |
| 研究领域[WOS] | engineering ; polymer science |
| 关键词[WOS] | oxidative-degradation ; infrared temperature ; surface modification ; chlorine ; polymers ; performance |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000249569000023 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/140582]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.SOA, Dev Ctr Water Treatment Technol, Hangzhou 310012, Peoples R China 4.Tianjin Zenith Engn & Consultat Co Ltd, Tianjin 300384, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kang, Guo-Dong,Gao, Cong-Jie,Chen, Wei-Dong,et al. Study on hypochlorite degradation of aromatic polyamide reverse osmosis membrane[J]. journal of membrane science,2007,300(1-2):165-171. |
| APA | Kang, Guo-Dong,Gao, Cong-Jie,Chen, Wei-Dong,Jie, Xing-Ming,Cao, Yi-Ming,&Yuan, Quan.(2007).Study on hypochlorite degradation of aromatic polyamide reverse osmosis membrane.journal of membrane science,300(1-2),165-171. |
| MLA | Kang, Guo-Dong,et al."Study on hypochlorite degradation of aromatic polyamide reverse osmosis membrane".journal of membrane science 300.1-2(2007):165-171. |
入库方式： OAI收割
来源：大连化学物理研究所
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