【摘 要】
：
Traditional solvent recovery in the extraction step of edible oil processing is distillation,which consumes large amounts of energy.If the distillation is replaced by membrane process,the energy consu
【机 构】
：
Centre for Membrane Membrane Technology & Engineering Research Center,Department of Chemical Enginee
【出 处】
：
The 6th International Conference on Separation and Technolog
论文部分内容阅读
Traditional solvent recovery in the extraction step of edible oil processing is distillation,which consumes large amounts of energy.If the distillation is replaced by membrane process,the energy consumption can be greatly reduced.In this work,two kinds of membrane,PDMS composite membrane and Zeolite filled PDMS membrane were prepared,in which asymmetric microporons PVDF membrane,prepared with phase inversion method,was acted as the microporous supporting layer in the flat-plate composite membrane.The different function compositions of the PDMS/PVDF composite membranes were characterized by reflection Fourier transform infrared (FTIR) spectroscopy.The surface and section of PDMS/PVDF composite membranes were investigated by scanning electron microscope (SEM).The PDMS NF membranes were employed in the recovery of hexane from soybean oil/hexane miscellas (1:3,w/w).The effects of pressure (5-15 bar) and PDMS layer thickness on membrane prerformance were investigated.Experimantal results indicated that both two kinds of NF membranes were promising for solvent recovery,and Zeolite filled in PDMS NF membrane could improve the separation performance.
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