Interfacially designed magnetic nanoparticles as Fenton-like catalyst for efficient chemical cleaning of polyamide nanofiltration membranes
文献类型：期刊论文
| 作者 | Huang, Jiachen1,2; Luo, Jianquan1,2; Chen, Xiangrong2; Feng, Shichao2; Wan, Yinhua1,2 |
| 刊名 | Environmental Science: Nano
 |
| 出版日期 | 2022-06-28 |
| 卷号 | 9期号:8页码:2906-2921 |
| ISSN号 | 20518153 |
| 关键词 | Alkalinity - Amino acids - Catalyst activity - Chemicals removal (water treatment) - Efficiency - Free radicals - Hydrogen peroxide - Magnetite - Mass transfer - Metal ions - Metal nanoparticles - Metals - Nanofiltration - Nanomagnetics - Oxidation - Physicochemical properties - Wastewater treatment - Water filtration |
| DOI | 10.1039/d2en00517d |
| 英文摘要 | Nanofiltration (NF) membranes have been widely applied in wastewater treatment. However, their wider applications and further popularization are still hindered owing to severe membrane fouling and decreasing cleaning efficiency. In this study, Fenton/Fenton-like agents with a strong foulant degradation ability are prepared and selected, and their influence on the physicochemical properties of polyamide (PA) NF membranes and cleaning efficiency are systematically investigated. It is found that the secondary fouling caused by ferric hydroxide precipitates makes the conventional Fenton agent unsuitable for membrane cleaning. Then, a Fenton-like agent with magnetic Fe3O4 nanoparticles modified by 纬-poly-glutamic acid (纬-PGA) and l-histidine (l-His) is prepared for membrane cleaning with a low concentration of hydrogen peroxide (3O4 nanoparticles with a higher affinity for hydrogen peroxide, thus ameliorating their catalytic activity for foulant degradation. Combining alkaline cleaning and Fenton-like catalysis cleaning, the stubborn pore fouling can be almost fully removed (100% and 95% for dead-end and cross-flow filtrations, respectively) because the alkali-induced pore swelling effect would enlarge the membrane pores and enhance the mass transfer of free radicals (O2鈭?and OH) into the pores and the release of oxidated foulants. Such a magnetic cleaning agent can be easily recovered and reused for green and sustainable membrane cleaning. 漏 2022 The Royal Society of Chemistry. |
| 学科主题 | Membrane Fouling |
| 项目编号 | This research was financially supported by the Province Key Research and Development Program of Shandong (2019JZZY010348), the Science and Technology Service Network Program of the Chinese Academy of Sciences (KFJ-STS-QYZX-096), and the Open Funding Project of the State Key Laboratory of Biochemical Engineering (2019KF-01). |
| 出版者 | Royal Society of Chemistry |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61186]  |
| 作者单位 | 1.School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing; 100049, China 2.State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China |
| 推荐引用方式 GB/T 7714 | Huang, Jiachen,Luo, Jianquan,Chen, Xiangrong,et al. Interfacially designed magnetic nanoparticles as Fenton-like catalyst for efficient chemical cleaning of polyamide nanofiltration membranes[J]. Environmental Science: Nano,2022,9(8):2906-2921. |
| APA | Huang, Jiachen,Luo, Jianquan,Chen, Xiangrong,Feng, Shichao,&Wan, Yinhua.(2022).Interfacially designed magnetic nanoparticles as Fenton-like catalyst for efficient chemical cleaning of polyamide nanofiltration membranes.Environmental Science: Nano,9(8),2906-2921. |
| MLA | Huang, Jiachen,et al."Interfacially designed magnetic nanoparticles as Fenton-like catalyst for efficient chemical cleaning of polyamide nanofiltration membranes".Environmental Science: Nano 9.8(2022):2906-2921. |
入库方式： OAI收割
来源：过程工程研究所
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