https://scholars.lib.ntu.edu.tw/handle/123456789/598241
標題: | Modifying thin-film composite forward osmosis membranes using various SiO2 nanoparticles for aquaculture wastewater recovery | 作者: | Nguyen T.-Q Tung K.-L Lin Y.-L Dong C.-D Chen C.-W Wu C.-H. KUO-LUN TUNG |
關鍵字: | Forward osmosis (FO);Polyamide (PA) modification;Silica nanoparticles;Thin-film composite (TFC) membrane;Water recovery;Aquaculture;Composite membranes;Coupling agents;Hydrophilicity;Nanocomposite films;Osmosis membranes;Reverse osmosis;Wastewater reclamation;Water filtration;3 aminopropyltriethoxysilane;Aquaculture wastewater;Forward osmose;Modified membranes;Polyamide modification;SiO$-2$;Thin film composite membranes;Thin film composites;Thin films;polyamide;silica nanoparticle;nanoparticle;silicon dioxide;aquaculture system;film;membrane;osmosis;recovery;wastewater treatment;aquaculture;Article;concentration (parameter);controlled study;hydrophilicity;membrane permeability;solute;thin film (procedure);waste water management;waste water recycling;water filtration;water supply;water transport;artificial membrane;wastewater;water management;Membranes, Artificial;Nanoparticles;Osmosis;Silicon Dioxide;Waste Water;Water Purification | 公開日期: | 2021 | 卷: | 281 | 來源出版物: | Chemosphere | 摘要: | This paper describes the fabrication, modification, and evaluation of the performance of thin-film composite (TFC) forward osmosis (FO) membranes for lab-scale aquaculture wastewater recovery using various fumed silica (SiO2) nanoparticles. The active polyamide (PA) layers of these membranes were novelly modified using different types of pretreated SiO2 nanoparticles [virgin SiO2, dried SiO2, and 3-aminopropyltriethoxysilane (APTES)-modified SiO2] and concentrations (0.05, 0,1, 0,2, and 0.4 wt%) to improve the membrane hydrophilicity with minimum particle agglomeration. Results show that the APTES-SiO2 modified membrane had the highest water flux and selectivity, followed by the dried-SiO2 modified membrane. The APTES coupling agent notably reduced the SiO2 aggregation on the membrane surface and improved membrane hydrophilicity. Consequently, high permeate flux and an acceptable reverse solute flux were observed. The optimal SiO2 concentration for PA modification was 0.1 wt% for all the nanoparticle types. The virgin and APTES-SiO2 modified membranes were used for aquaculture wastewater recovery. The water recovery rate reached 47% in 84 h when using the APTES-SiO2 modified membrane, while it reached only 26% in 108 h when using the virgin membrane. With a suitable design of the filtration apparatus and choice of draw solution (DS), the prepared novel TFC-FO membrane containing APTES-modified SiO2 can be used for recycling aquaculture wastewater into the DS, which can then be reused for other purposes. ? 2021 Elsevier Ltd |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106458655&doi=10.1016%2fj.chemosphere.2021.130796&partnerID=40&md5=e83377159e4401c1d159577177ae2d47 https://scholars.lib.ntu.edu.tw/handle/123456789/598241 |
ISSN: | 00456535 | DOI: | 10.1016/j.chemosphere.2021.130796 |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。