膜
纳滤
羧甲基纤维素
戊二醛
材料科学
化学工程
薄膜复合膜
接触角
海水淡化
浸涂
涂层
结垢
傅里叶变换红外光谱
高分子化学
复合材料
纤维素
色谱法
反渗透
化学
钠
冶金
工程类
生物化学
作者
Samira Jabbarvand Behrouz,Alireza Khataee,Mahdie Safarpour,Samira Arefi-Oskoui,Sang Woo Joo
标识
DOI:10.1016/j.seppur.2021.118720
摘要
Herein, we report the fabrication of carboxymethyl cellulose (CMC)/polyethersulfone (PES) thin-film composite nanofiltration membranes using a dip-coating method with glutaraldehyde (GA) as the crosslinking agent. The effects of crosslinking degree and the dip-coating parameters, including CMC concentration and dipping time, on the performance and morphology of the fabricated membranes were investigated. The properties of the prepared membranes were analyzed by ATR-FTIR, AFM, FE-SEM, and water contact angle analysis. The optimized membrane containing 0.2 wt% CMC, crosslinking degree of 20% by the dipping time of 10 min represented a rejection efficiency of 91.90%, 68.63%, and 45.90% towards the Na2SO4, MgSO4, and NaCl solutions (100 mg/L), respectively. The pure water flux of the optimal membrane was 47.90 ± 1.77 L/m2 h under a low transmembrane pressure of 0.4 MPa. The flux recovery ratio of the nanofiltration membrane was 63% higher than the PES support membrane, indicating an improvement in fouling resistance.
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