CIESC Journal ›› 2010, Vol. 61 ›› Issue (10): 2590-2595.
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ZHOU Yong ;GAO Congjie
Online:
Published:
周勇;高从堦
Abstract:
Two kinds of reverse osmosis (RO)membrane for brackish water (BW)and sea water (SW)were prepared with trimesoyl chloride (TMC)and m-phenylenediamine (MPD)on the polysulphone supporting film through interfacial polymerization technique.The membranes were compared using permeation experiments with salt water, scanning electronic microscopy (SEM), X-ray photoelectronic spectroscopy (XPS)and atomic force microscopy (AFM).The study shows that SWRO membrane has higher rejection for NaCl but low flux for water compared to the BWRO membrane, because the surface of SWRO membrane contains more hydrophilic group (—COOH)according to the XPS result, and presents lower roughness according to the result of SEM and AFM.
Key words: 反渗透膜, 均苯三甲酰氯, 间苯二胺
摘要: 采用均苯三甲酰氯和间苯二胺通过界面合法分别得到苦咸水反渗透复合膜和海水反渗透复合膜。两者在低盐浓度时,对氯化钠的脱除率相近;在高盐浓度时,苦咸水反渗透复合膜对氯化钠的脱除率明显低于海水反渗透复合膜。用扫描电镜、原子力显微镜分析两者表面形态发现海水反渗透复合膜表面粗糙度更小。X射线光电子能谱分析结果表明,海水反渗透复合膜表面的羧酸根含量更多。
关键词: 反渗透膜, 均苯三甲酰氯, 间苯二胺
ZHOU Yong , GAO Congjie. Comparison between BWRO membrane and SWRO membrane[J]. CIESC Journal, 2010, 61(10): 2590-2595.
周勇, 高从堦. BWRO复合膜和SWRO复合膜的本质对比 [J]. 化工学报, 2010, 61(10): 2590-2595.
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https://hgxb.cip.com.cn/EN/Y2010/V61/I10/2590
Reverse osmosis composite membrane(Ⅰ)Chemical structure and performance