Modification Mechanism of Polyamide Reverse Osmosis Membrane by Persulfate: Roles of Hydroxyl and Sulfate Radicals
文献类型：期刊论文
| 作者 | Cheng, Wei ; Xu, Haodan; Wang, Peizhi; Wang, Lihong; Szymczyk, Anthony; Croue, Jean-Philippe; Zhang, Tao
|
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2022-06-21 |
| 卷号 | 56期号:12页码:8864-8874 |
| 关键词 | NATURAL ORGANIC-MATTER SURFACE MODIFICATION PHYSIOCHEMICAL PROPERTIES ACTIVE LAYER RO MEMBRANE ANILINE DEGRADATION OXIDATION PERFORMANCE CHEMISTRY |
| ISSN号 | 0013-936X |
| 英文摘要 | Oxidative modification is a facile method to improve the desalination performance of thin-film composite membranes. In this study, we comparatively investigated the modification mechanisms induced by sulfate radical (SO4' -) and hydroxyl radical (HO') for polyamide reverse osmosis (RO) membrane. The SO4' -- and HO'-based membrane modifications were manipulated by simply adjusting the pH of the thermal-activated persulfate solution. Although both of them improved the water permeability of the RO membrane under certain conditions, the SO4' --modified membrane notably prevailed over the HO'-modified one due to higher permeability, more consistent salt rejection rates over wide pH and salinity ranges, and better stability when exposed to high doses of chlorine. The differences of the membranes modified by the two radical species probably can be related to their distinct surface properties in terms of morphology, hydrophilicity, surface charge, and chemical composition. Further identification of the transformation products of a model polyamide monomer using high-resolution mass spectrometry demonstrated that SO4' - initiated polymerization reactions and produced hydroquinone/benzoquinone and polyaromatic structures; whereas the amide group of the monomer was degraded by HO', generating hydroxyl, carboxyl, and nitro groups. The results will enlighten effective ways for practical modification of polyamide RO membranes to improve desalination performances and the development of sustainable oxidation-combined membrane processes. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47878]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 通讯作者 | Zhang, Tao |
| 作者单位 | 1.Univ Rennes, CNRS, ISCR UMR 6226, F-35000 Rennes, France 2.Univ Poitiers, IC2MP UMR 7285, Inst Chim Milieux & Mat, CNRS, F-86073 Poitiers, France 3.Harbin Inst Technol Shenzhen, Sch Civil & Environm Engn, Shenzhen Key Lab Water Resource Applicat & Enviro, Shenzhen 518055, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Wei,Xu, Haodan,Wang, Peizhi,et al. Modification Mechanism of Polyamide Reverse Osmosis Membrane by Persulfate: Roles of Hydroxyl and Sulfate Radicals[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022,56(12):8864-8874. |
| APA | Cheng, Wei.,Xu, Haodan.,Wang, Peizhi.,Wang, Lihong.,Szymczyk, Anthony.,...&Zhang, Tao.(2022).Modification Mechanism of Polyamide Reverse Osmosis Membrane by Persulfate: Roles of Hydroxyl and Sulfate Radicals.ENVIRONMENTAL SCIENCE & TECHNOLOGY,56(12),8864-8874. |
| MLA | Cheng, Wei,et al."Modification Mechanism of Polyamide Reverse Osmosis Membrane by Persulfate: Roles of Hydroxyl and Sulfate Radicals".ENVIRONMENTAL SCIENCE & TECHNOLOGY 56.12(2022):8864-8874. |
入库方式： OAI收割
来源：生态环境研究中心
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