Knowledge Management System Of Institute of process engineering,CAS
| The role of phase transfer catalysts on properties of polyamide thin-film composite forward osmosis membranes | |
| Jia, Qibo1; Li, Yan1; Zhong, Li1,2; Liu, Yan1,2; Duan, Dongping1,2 | |
| 2021-12-15 | |
| Source Publication | CHEMICAL ENGINEERING JOURNAL
 |
| ISSN | 1385-8947 |
| Volume | 426Pages:16 |
| Abstract | In this article, 1,3,5-benzenetricarbonyl trichloride (TMC), m-phenylenediamine (MPD) and phase transfer catalysts (PTCs) were used to produce polyamide thin-film composite (TFC) forward osmosis (FO) membranes through interfacial polymerization (IP) reaction. The effects of dodecyl trimethyl ammonium chloride (DTAC), sodium dodecyl sulphate (SDS) and dodecyl dimethyl betaine (BS12) on the polyamide molecular aggregation structures, surface morphology and FO separation performance of the membranes were systematically investigated. In the FO process, concentrated 1.0 M NaCl aqueous solution was chosen as the draw solution and 0.1 M NaCl aqueous solution was used as the feed solution (at room temperature). Separation performance included the water flux (J(w)) and reverse salt rejection (reverse solute flux, RS). The experiment proved that PTCs can regulate the molecular chain aggregation state and surface morphology of polyamide, which can lead to a relatively definite improvement in water flux (11.5 L m(-2) h(-1)) (DTAC-polyamide). Simultaneously, the polyamide surface morphology was found to play a major role in the water permeability of the FO membrane rather than the density of the skin layer (i.e., degree of cross-linking), and we found that a relatively smooth surface is more conducive to weakening the external concentration polarization (ECP) phenomenon that occurs in the FO process. We attribute this mechanism on polyamide to the size effect and charge interaction of PTCs. In the current study, the balanced effect of the synergistic interaction of the molecular structure and rough surface of polyamide on FO separation performance should be comprehensively considered. |
| Keyword | Forward osmosis Phase transfer catalysts Polyamide molecular structure Surface topography Separation performance |
| DOI | 10.1016/j.cej.2021.128989 |
| Language | 英语 |
| WOS Keyword | INTERNAL CONCENTRATION POLARIZATION ; INTERFACIAL POLYMERIZATION ; REVERSE-OSMOSIS ; SEPARATION PERFORMANCE ; FLUX BEHAVIOR ; LAYER ; MORPHOLOGY ; FLOW |
| Funding Project | Youth Program of National Natural Science Foundation of China[51708539] ; National Key Research and Development Project[2018YFC1903800] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Environmental ; Engineering, Chemical |
| Funding Organization | Youth Program of National Natural Science Foundation of China ; National Key Research and Development Project |
| WOS ID | WOS:000729119300004 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/51365 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Duan, Dongping |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Jia, Qibo,Li, Yan,Zhong, Li,et al. The role of phase transfer catalysts on properties of polyamide thin-film composite forward osmosis membranes[J]. CHEMICAL ENGINEERING JOURNAL,2021,426:16. |
| APA | Jia, Qibo,Li, Yan,Zhong, Li,Liu, Yan,&Duan, Dongping.(2021).The role of phase transfer catalysts on properties of polyamide thin-film composite forward osmosis membranes.CHEMICAL ENGINEERING JOURNAL,426,16. |
| MLA | Jia, Qibo,et al."The role of phase transfer catalysts on properties of polyamide thin-film composite forward osmosis membranes".CHEMICAL ENGINEERING JOURNAL 426(2021):16. |
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