Enrichment of phenol in water by dibenzo-18-crown ether-6/polyether block amide membrane

被引：0
|
作者：
Fang L. [1 ]
Wang J. [1 ]
Lin Q. [1 ]
Chen J. [1 ,2 ]
Yang Q. [1 ,2 ]
机构：
[1] College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, Zhangzhou
[2] Fujian Provincial Key Laboratory of Modern Separation and Analysis Science and Technology, Minnan Normal University, Zhangzhou
来源：
Huagong Xuebao/CIESC Journal | 2021年 / 72卷 / 07期
关键词：
Dibenzo-18-crown ether-6; Pervaporation; Phenol; Polyether block amide;
D O I：
10.11949/0438-1157.20210044
中图分类号：
学科分类号：
摘要：
In this study, to improve the selectivity separation performance of polyether block amide (PEBA) membrane for phenol in water, dibenzo-18-crown ether-6 (CE) was used to modify the PEBA membrane. FT-IR and SEM characterization confirmed that the CE was closely combined with PEBA and the CE was evenly distributed on the membrane surface. AFM characterization showed that CE modification effectively improved the contact area between the membrane surface and phenol. Water contact angle test showed that CE modification greatly improved the hydrophobicity of PEBA /CE membrane. At the same time, the effects of CE content, feed phenol concentration and feed temperature on pervaporation performance of PEBA/CE were systematically studied. The results show that CE can significantly improve the selectivity of PEBA/CE membrane to phenol in water. When the feed phenol concentration is 0.8%(mass) and the operating temperature is 70℃, the separation factor and permeation flux of PEBA/CE-6 membrane (CE content 6%(mass) of PEBA) are 23.34 and 494.40 g/(m2·h), which is far exceeding pure PEBA membrane performance (separation factor 8.46, total permeation flux 547.48 g/(m2·h). The prepared PEBA/CE-6 membranes have good stability and potential industrial application value. © 2021, Chemical Industry Press Co., Ltd. All right reserved.
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页码：3716 / 3727
页数：11
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