Effects of Alkaline Cleaning on the Conversion and Transformation of Functional Groups on Ion-Exchange Membranes in Polymer-Flooding Wastewater Treatment: Desalination Performance, Fouling Behavior, and Mechanism
文献类型：期刊论文
| 作者 | Xia, Q; Qiu, LP; Yu, SL; Yang, HJ; Li, L; Ye, YB; Gu, ZY; Ren, LM; Liu, GC |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 53期号:24页码:14430-14440 |
| ISSN号 | 0013-936X |
| 关键词 | FUEL-CELLS SCALE ELECTRODIALYSIS STABILITY DEGRADATION PARAMETERS HYDROXIDE SURFACE PLANT |
| DOI | 10.1021/acs.est.9b05815 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The aging effects of sodium hydroxide (NaOH) on ion-exchange membranes were systematically studied, including the membrane properties, desalination performance, and fouling behaviors. After aging in NaOH solution, there were minor changes in the cation-exchange membrane (CEM) properties; however, functional groups (i.e., quaternary amines) on the anion-exchange membranes (AEMs) were converted into benzylic alcohol, alkene, and tertiary amines, respectively, by nucleophilic substitution, Hofmann elimination, and ylide formation. These degradations rendered decreased ion-exchange capacity (IEC), increased electrical resistance, lost hydrophilicity, and weakened mechanical strength. Moreover, severe deteriorations of desalination performance were observed due to the little ion-exchange ability of the degraded AEMs. The desalination rates were restored after cultivating the aged AEMs in acid solution, mainly because the tertiary amines transformed from the hydroxide form (OH-form) to the ionic chlorine form (Cl-form). The restored desalination rates indicated that the main degradation products were tertiary amines. In addition, the antifouling performance decreased in the order of aged OH-form > aged Cl-form > original AEMs due to the reduction of foulant-membrane intermolecular interactions after aging in NaOH solution. The results contribute to establishing a more comprehensive understanding of the effects of alkaline cleaning on IEMs and provide new insights into cleaning-process optimization and membrane modification. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32036]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ Jinan, Sch Civil Engn & Architecture, Jinan 250022, Shandong, Peoples R China; 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, POB 800-204, Shanghai 201800, Peoples R China 3.Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China; 4.Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China; 5.Chinese Acad Sci, Shanghai Inst Appl Phys, Interfacial Water Div, POB 800-204, Shanghai 201800, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Xia, Q,Qiu, LP,Yu, SL,et al. Effects of Alkaline Cleaning on the Conversion and Transformation of Functional Groups on Ion-Exchange Membranes in Polymer-Flooding Wastewater Treatment: Desalination Performance, Fouling Behavior, and Mechanism[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2019,53(24):14430-14440. |
| APA | Xia, Q.,Qiu, LP.,Yu, SL.,Yang, HJ.,Li, L.,...&Liu, GC.(2019).Effects of Alkaline Cleaning on the Conversion and Transformation of Functional Groups on Ion-Exchange Membranes in Polymer-Flooding Wastewater Treatment: Desalination Performance, Fouling Behavior, and Mechanism.ENVIRONMENTAL SCIENCE & TECHNOLOGY,53(24),14430-14440. |
| MLA | Xia, Q,et al."Effects of Alkaline Cleaning on the Conversion and Transformation of Functional Groups on Ion-Exchange Membranes in Polymer-Flooding Wastewater Treatment: Desalination Performance, Fouling Behavior, and Mechanism".ENVIRONMENTAL SCIENCE & TECHNOLOGY 53.24(2019):14430-14440. |
入库方式： OAI收割
来源：上海应用物理研究所
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