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| Custom-Tailoring Loose Nanofiltration Membrane for Precise Biomolecule Fractionation: New Insight into Post-Treatment Mechanisms | |
| Guo, Shiwei; Chen, Xiangrong; Wan, Yinhua; Feng, Shichao; Luo, Jianquan | |
| 2020-03-18 | |
| Source Publication | ACS APPLIED MATERIALS & INTERFACES
 |
| ISSN | 1944-8244 |
| Volume | 12Issue:11Pages:13327-13337 |
| Abstract | Loose nanofiltration (NF) membranes with diverse selectivity can meet the great demands in various bioseparation applications. Thus, a facile strategy to tune the properties such as pore size, surface charge, and hydrophilicity of the NF membrane is required to produce tailor-made loose NF membranes without changing the existing production line. Herein, we systematically investigated the post-treatment of the nascent poly(piperazine amide) NF membranes using different reagents (organic acids, weak bases, organic solvents and ionic liquid (IL)). Various characterizations revealed that the skin/separation layer became looser and permeance was promoted with the decrease of salt rejection in varying degrees. It was found that the O/N ratio did not rigorously represent the cross-linking degree of the skin layer, because besides the hydrolysis of the residual acyl chloride impeding the amido bond formation, the breaking of existing amido bonds and the grafting of free trimesoyl chloride molecules on the nascent membranes could also increase the O/N ratio during post-treatments. Then three mechanisms including hydrolysis, swelling rearrangement and capping reaction effects were proposed to better understand the membrane properties variations. All these effects resulted in larger pore size of the NF membrane, and the hydrolysis/capping effect might increase negative charge and hydrophilicity on the membrane, while the swelling rearrangement could produce less defective skin structure. These three effects might be involved together during a single treatment. Finally, the NF membrane post-treated by N-hexane could efficiently separate antibiotics and NaCl with the highest permeate flux, whereas the one post-treated by ionic liquid outperformed others for the decoloration of cane molasses (much more efficient than NF270, DL, and NTR7450 membranes). The long-term operating stability of the post-treated membranes selected was also confirmed by a continuous crossflow filtration for 15 h with regular alkaline cleaning. |
| Keyword | loose nanofiltration membrane interfacial polymerization post-treatment bioseparation TFC membrane |
| DOI | 10.1021/acsami.0c00259 |
| Language | 英语 |
| WOS Keyword | REVERSE-OSMOSIS MEMBRANES ; POLYAMIDE NANOFILTRATION ; QUANTUM DOTS ; HIGH-FLUX ; MOLASSES ; ULTRAFILTRATION ; REMOVAL ; WATER ; DYES ; PERMEABILITY |
| Funding Project | Province Key Research and Development Program of Shandong[2019JZZY010348] |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| Funding Organization | Province Key Research and Development Program of Shandong |
| WOS ID | WOS:000526543400100 |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/40027 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Feng, Shichao; Luo, Jianquan |
| Affiliation | Chinese Acad Sci, Univ Chinese Acad Sci, State Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Guo, Shiwei,Chen, Xiangrong,Wan, Yinhua,et al. Custom-Tailoring Loose Nanofiltration Membrane for Precise Biomolecule Fractionation: New Insight into Post-Treatment Mechanisms[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(11):13327-13337. |
| APA | Guo, Shiwei,Chen, Xiangrong,Wan, Yinhua,Feng, Shichao,&Luo, Jianquan.(2020).Custom-Tailoring Loose Nanofiltration Membrane for Precise Biomolecule Fractionation: New Insight into Post-Treatment Mechanisms.ACS APPLIED MATERIALS & INTERFACES,12(11),13327-13337. |
| MLA | Guo, Shiwei,et al."Custom-Tailoring Loose Nanofiltration Membrane for Precise Biomolecule Fractionation: New Insight into Post-Treatment Mechanisms".ACS APPLIED MATERIALS & INTERFACES 12.11(2020):13327-13337. |
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