不同条件对CA/NYL66共混膜渗透蒸发脱水的影响

IF 0.8 4区工程技术 Q4 ENGINEERING, CHEMICAL

Membrane Water Treatment Pub Date : 2019-11-01 DOI:10.12989/MWT.2019.10.6.441

A. Kazemzadeh, S. Mousavi, J. Mehrzad, A. Motavalizadehkakhky, M. Hosseiny

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引用次数: 1

摘要

采用溶剂蒸发法制备了不同厚度的醋酸纤维素（CA）/尼龙66（NYL66）（95/5）共混膜。研究了膜厚度（约7-25微米）、进料浓度（70-95wt%异丙醇）和进料温度（30-60℃）对膜分离异丙醇-水混合物性能的影响。关于吸附实验的结果，发现进料温度的增加增强了整体吸附，而通过增加进料浓度，整体吸附在70 wt.%异丙醇（IPA）下达到最大值。在高异丙醇浓度95重量%、低进料温度30℃和高膜厚度24.62微米的条件下获得最佳分离因子3080.51。关于渗透蒸发分离指数，所获得的结果表明，膜厚度、进料温度和进料中异丙醇浓度的合适值分别为24.62微米、40℃和70重量%。

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Effect of different conditions on pervaporation dehydration in CA/NYL66 blend membrane

In this study, cellulose acetate (CA) / nylon66 (NYL66) (95/5) blend membranes with different thicknesses were prepared by a solvent evaporation method. The effects of membrane thickness (almost 7-25 micrometre), feed concentration (70- 95 wt.% isopropanol), and feed temperature (30-60 C) were investigated on the performance of membrane in the separation of isopropanol-water mixtures. With regard to the results of sorption experiments, it was found that the increase of feed temperature enhanced the overall sorption while by increasing feed concentration, the overall sorption passed through a maximum value at 70 wt. % isopropanol (IPA) . The best separation factor 3080.51 was gained at high isopropanol concentration 95 wt.%, low feed temperature 30 C, and high membrane thickness 24.62 micrometre. Regarding the pervaporation separation index, the obtained results showed that proper values for the thickness of membrane, feed temperature, and isopropanol concentration in feed were 24.62 micrometre, 40 C, and 70 wt.%, respectively.

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来源期刊

Membrane Water Treatment ENGINEERING, CHEMICAL-WATER RESOURCES

CiteScore

1.90

自引率

30.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Membrane and Water Treatment(MWT), An International Journal, aims at opening an access to the valuable source of technical information and providing an excellent publication channel for the global community of researchers in Membrane and Water Treatment related area. Specific emphasis of the journal may include but not limited to; the engineering and scientific aspects of understanding the basic mechanisms and applying membranes for water and waste water treatment, such as transport phenomena, surface characteristics, fouling, scaling, desalination, membrane bioreactors, water reuse, and system optimization.