超滤(肾)
浓差极化
结垢
膜
膜污染
化学
腐植酸
化学工程
粘度
渗透
色谱法
纳米-
材料科学
有机化学
复合材料
生物化学
工程类
肥料
作者
Xiangxiang Li,Xingfei Guo,Meng Zhang,Hongwei Zhang,Yaowu Wang,Shu-Lin Chao,Haitao Ren,Shoujun Wu,Shao‐Yi Jia,Yong Liu,Xu Han
出处
期刊:Chemosphere
[Elsevier]
日期:2022-09-01
卷期号:302: 134782-134782
被引量:4
标识
DOI:10.1016/j.chemosphere.2022.134782
摘要
Micro-nano bubbles (MNBs) play important roles in the reduction of membrane fouling during membrane separation; however, such improvements are always attributed to the reduced concentration polarization on the surface of membranes and little attention has been paid on the variations of physicochemical properties of the feed caused by MNBs. In this study, the separation efficiencies of the feed containing humic acid (HA), bovine serum albumin (BSA), sodium alginate (SA) or dyes can be improved by MNBs during ultrafiltration, and the normalized fluxes can be maximally increased to 139% and 127% in the dead-end and cross-flow modes, respectively in the treatment of HA solution. We further reveal that the decreased apparent viscosity of the feed in the presence of MNBs is the key factor that enhances the normalized flux during ultrafiltration. This study gives new insight on the importance of MNBs in membrane separation and provides valuable clues for other chemical processes.
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