Tuning pore size and surface charge of poly(piperazinamide) nanofiltration membrane by enhanced chemical cleaning treatment
文献类型：期刊论文
| 作者 | Ren, Yuling2; Zhu, Junyong1; Feng, Shichao2; Chen, Xiangrong2; Luo, Jianquan2; Wan, Yinhua2 |
| 刊名 | JOURNAL OF MEMBRANE SCIENCE
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 643页码:11 |
| 关键词 | Chemical cleaning Separation selectivity Pore size adjustment Surface charge regulation Desalination |
| ISSN号 | 0376-7388 |
| DOI | 10.1016/j.memsci.2021.120054 |
| 英文摘要 | Separation of divalent salts and small organics plays a paramount in biorefinery and food industries. Nanofiltration (NF) membranes featuring suitable pore aperture ranges enables achievement of this goal, yet it fails in attaining a high liquid permeance and selectivity due to the presence of a highly crosslinked polyamide (PA) layer. In this work, the separation efficiency of monosaccharides and divalent salts by NF can be significantly improved by using a facile post-treatment approach. Assisted by chemical cleaning using three types of commonly used agents (H2SO4, NaOH and NaClO), controlled hydrolysis of PA groups is adopted to modulate the crosslinking degree, pore size, and surface charge of PA layer. After systematically comparing the different posttreatment agents and optimizing the treatment conditions, 3000 ppm NaClO treatment for 48 h is selected as the best for enhancing the separation of xylose and Na2SO4. The un-crosslinked -NH groups that serve as sites chloritized by the NaClO in the post-treatment process trigger the hydrolysis of the PA chains, thus enabling the formation of a loose, strongly electronegative and narrow pore size distributed PA film. Such hydrolysis can also eliminate the "weak points" of the separation layer which are susceptible to pH and salts, and the membrane structure is strengthened and becomes more stable at different pH although the post-treated membranes have larger pores and more charges. This results in a remarkable decline in xylose rejection (from 40.0% to 18.0%) while maintaining the high retention of Na2SO4 (97.1%), leading to an improved separation factor from 2.7 to 5.4 with a 93.3% permeability improvement. The chlorinated NF membrane also maintains excellent separation performance in crossflow filtration process. |
| WOS关键词 | REVERSE-OSMOSIS MEMBRANE ; INTERFACIAL POLYMERIZATION ; PROMOTED HYDROLYSIS ; ACID ; PH ; PERFORMANCE ; MODEL ; AMIDE ; SALT ; ELECTRODIALYSIS |
| 资助项目 | Province Key Research and Development Program of Shandong[2019JZZY010348] ; Science and Technology Service Network Program of Chinese Academy of Sciences[KFJ-STS-QYZX-096] ; ZheJiang MEY Membrane Technology CO.,LTD. |
| WOS研究方向 | Engineering ; Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000722088800005 |
| 出版者 | ELSEVIER |
| 资助机构 | Province Key Research and Development Program of Shandong ; Science and Technology Service Network Program of Chinese Academy of Sciences ; ZheJiang MEY Membrane Technology CO.,LTD. |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/51116]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Luo, Jianquan |
| 作者单位 | 1.Zhengzhou Univ, Sch Chem Engn & Energy, Zhengzhou 450001, Peoples R China 2.Univ Chinese Acad Sci, Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Yuling,Zhu, Junyong,Feng, Shichao,et al. Tuning pore size and surface charge of poly(piperazinamide) nanofiltration membrane by enhanced chemical cleaning treatment[J]. JOURNAL OF MEMBRANE SCIENCE,2022,643:11. |
| APA | Ren, Yuling,Zhu, Junyong,Feng, Shichao,Chen, Xiangrong,Luo, Jianquan,&Wan, Yinhua.(2022).Tuning pore size and surface charge of poly(piperazinamide) nanofiltration membrane by enhanced chemical cleaning treatment.JOURNAL OF MEMBRANE SCIENCE,643,11. |
| MLA | Ren, Yuling,et al."Tuning pore size and surface charge of poly(piperazinamide) nanofiltration membrane by enhanced chemical cleaning treatment".JOURNAL OF MEMBRANE SCIENCE 643(2022):11. |
入库方式： OAI收割
来源：过程工程研究所
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