Improved permeability of tight acid resistant nanofiltration membrane via citric acid post-treatment
文献类型：期刊论文
| 作者 | Yu, Ling; Li, Kuiling ; Zhang, Yong; Wang, Jun; Zhang, Guoliang
|
| 刊名 | JOURNAL OF MEMBRANE SCIENCE
 |
| 出版日期 | 2022-04-15 |
| 卷号 | 648期号:0页码:120381 |
| ISSN号 | 0376-7388 |
| 关键词 | CELLULOSE-BASED HYDROGELS FILM COMPOSITE MEMBRANE NAPHTHALENE-1,3,6-TRISULFONYLCHLORIDE NTSC INTERFACIAL POLYMERIZATION PH POLYETHYLENEIMINE POLYSULFONAMIDE CHLORIDE LAYER |
| 英文摘要 | Development of acid resistant nanofiltration membranes (ARNFMs) with high metal rejection, high flux and low molecule weight cut-off (MWCO) remains a big challenge. The separation performance of polyamine ARNFM is partially limited by the dense structure caused by the high concentration of organic phase solution. Herein, in this work, a novel effective post-treatment of citric acid (CA) was utilized to further improve the separation property of dually charged polyamine ARNFMs with low MWCO. An appropriate CA post-treatment (1.5 mol/L, 30 min, 65 degrees C) could gently remove off the oligomers and CA molecules would react with the redundant protonated/non-protonated amino, imine and hydroxyl groups of the polyamine NFM. Therefore,after the post-treatment, the membrane flux was enhanced 7.1 times with a high MgCl2 rejection (97.6%) and a low MWCO around 220 Da. Furthermore, CA post-treatment not only had no significant influence on the acid stability of this membrane, but would also protect the membrane from the drastic effect of HCl (hydrolyze-Cl into -OH) in turn. All the results indicated that CA post-treatment has positive effects on polyamine ARNFMs, and the resulted dually charged polyamine ARNFMs have a good application potential for acidic wastewater treatment. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47704]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 通讯作者 | Wang, Jun |
| 作者单位 | 1.Zhejiang Univ Technol, Inst Ocean & Environm Chem Engn, Ctr Membrane & Water Sci & Technol, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310014, Zhejiang, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, 18 Shuangqing Rd, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Ling,Li, Kuiling,Zhang, Yong,et al. Improved permeability of tight acid resistant nanofiltration membrane via citric acid post-treatment[J]. JOURNAL OF MEMBRANE SCIENCE,2022,648(0):120381. |
| APA | Yu, Ling,Li, Kuiling,Zhang, Yong,Wang, Jun,&Zhang, Guoliang.(2022).Improved permeability of tight acid resistant nanofiltration membrane via citric acid post-treatment.JOURNAL OF MEMBRANE SCIENCE,648(0),120381. |
| MLA | Yu, Ling,et al."Improved permeability of tight acid resistant nanofiltration membrane via citric acid post-treatment".JOURNAL OF MEMBRANE SCIENCE 648.0(2022):120381. |
入库方式： OAI收割
来源：生态环境研究中心
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