不同分子量聚乙二醇对复合纳滤反渗透膜的改性

Modification of Thin Film Composite Pressure Retarded Osmosis Membrane by Polyethylene Glycol with Different Molecular Weights.

作者信息

Idris Siti Nur Amirah, Jullok Nora, Lau Woei Jye, Ma'Radzi Akmal Hadi, Ong Hui Lin, Ramli Muhammad Mahyidin, Dong Cheng-Di

机构信息

Faculty of Chemical Engineering and Technology, Universiti Malaysia Perlis, Kompleks Pusat Pengajian Jejawi 3, Kawasan Perindustrian Jejawi, Arau 02600, Perlis, Malaysia.

Centre of Excellence for Biomass Utilization & Taiwan-Malaysia Innovation Centre for Clean Water and Sustainable Energy (WISE Center), Universiti Malaysia Perlis, Lot 17, Kompleks Pusat Pengajian Jejawi 2, Jejawi, Arau 02600, Perlis, Malaysia.

出版信息

Membranes (Basel). 2022 Feb 28;12(3):282. doi: 10.3390/membranes12030282.

DOI:10.3390/membranes12030282

PMID:35323758

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8954429/

Abstract

An investigation of the effect of the molecular weight of polyethylene glycol (PEG) on thin-film composite (TFC) flat sheet polysulfone membrane performance was conducted systematically, for application in forward osmosis (FO) and pressure retarded osmosis (PRO). The TFC flat sheet PSf-modified membranes were prepared via a non-solvent phase-separation technique by introducing PEGs of different molecular weights into the dope solution. The TFC flat sheet PSf-PEG membranes were characterized by SEM, FTIR and AFM. The PSf membrane modified with PEG 600 was found to have the optimum composition. Under FO mode, this modified membrane had a water permeability of 12.30 Lmh and a power density of 2.22 Wm, under a pressure of 8 bar in PRO mode, using 1 M NaCl and deionized water as the draw and feed solutions, respectively. The high water permeability and good mechanical stability of the modified TFC flat sheet PSF-PEG membrane in this study suggests that this membrane has great potential in future osmotically powered generation systems.

摘要

为了将其应用于正向渗透（FO）和压力延迟渗透（PRO），系统地研究了聚乙二醇（PEG）分子量对复合薄膜（TFC）平板聚砜膜性能的影响。通过非溶剂相分离技术，将不同分子量的PEG引入铸膜液中，制备了TFC平板PSf改性膜。采用扫描电子显微镜（SEM）、傅里叶变换红外光谱（FTIR）和原子力显微镜（AFM）对TFC平板PSf-PEG膜进行了表征。发现用PEG 600改性的PSf膜具有最佳组成。在FO模式下，该改性膜的水通量为12.30 Lmh，在PRO模式下，在8 bar压力下，分别使用1 M NaCl和去离子水作为汲取液和进料液时，功率密度为2.22 Wm。本研究中改性TFC平板PSF-PEG膜具有高水通量和良好的机械稳定性，表明该膜在未来的渗透发电系统中具有巨大潜力。