【摘 要】
：
Using polysulfone (PSF) hollow fiber ultrafiltration membranes as the substrate, sodium alginate (SA) and poly-vinyl alcohol (PVA) blend solutions as the coatin
【机 构】
：
Chemical Engineering Research Center
【基金项目】
：
国家重点基础研究发展计划(973计划);
论文部分内容阅读
Using polysulfone (PSF) hollow fiber ultrafiltration membranes as the substrate, sodium alginate (SA) and poly-vinyl alcohol (PVA) blend solutions as the coating solution, and maleic anhydride (MAC) as the cross-linked agent, SA-PVA/PSF hollow fiber composite membranes were prepared for the dehydration of ethanol-water. The effects of differentsodium alginate concentration in the coating solutions and different operating temperatures on pervaporation performance wereinvestigated. The experimental results showed that pervaporation performance of the SA-PVA/PSF composite membranesfor ethanol-water solution exhibited a high separation factor although they had a relatively low permeation flux. As SAconcentration in SA-PVA coating solution was 66.7% and the operating temperature was 40 C, SA-PVA/PSF hollow fibercomposite membrane (PS4) had a separation factor of 886 and flux of 12.6 g/(m2.h). Besides, SA-PVA/PSF hollow fibercomposite membranes (PS3 and PS4) were used for the investigation of the effect of ethanol concentration in the feed solutionon pervaporation performance.
其他文献
本文研究了溴化十六烷基三甲铵阳离子表面活性剂(CTMAB)对铝-铬天青(CAS)络合体系性质影响.在pH6.8的醋酸-醋酸钠缓冲溶液中,当邻菲罗啉和抗坏血酸存在时,铝与铬天青形成紫色
This paper introduces the relevant parameters and related characteristics of the LabVIEW and PCI6221 data acquisition (DAQ) card, describes in detail the approa
湘西民居无论是在形态布局、与自然结合,还是在乡土文化方面都有着自身的特点,它不拘一格,生动活泼.通过对湘西民居吊脚楼的布局、形制等因素的解读,来研究湘西民居的特点,寻
思想政治工作是一个不断发展的开放系统。思想政治工作只有与时俱进,坚持创新,才能适应人民群众日益增长的精神文化生活的需求,才能保持蓬勃生机和活力。本文阐述了创新思想
驻马店是一个旅游资源丰富,开发前景广阔的地区。在旅游的产业化进程中,有限的旅游资源面临市场迅速扩张的压力;生态破坏缺乏科学规划,忽视旅游产业既是经济产业又是文化产业
绥化市作为东北地区的一个典型代表,在饮食习惯、餐饮业经营所需考虑的时间距离、空间距离、客源市场、经济发展以及城市交通等方面存在着诸多的特征,对这些特征的不正确掌握
The control stability of the end manipulator of a cable-suspended Stewart platform in disturbance was studied by combination of the multi-body system dynamics a
在有效质量近似下,运用变分方法,考虑内建电场(BEF)效应和量子点的三维约束效应,研究了纤锌矿结构的InxGa1-xN/GaN柱形量子点中类氢杂质态结合能随量子点的结构参数(高度、半
In the conventional differential quadrature (DQ) method the functional values along a mesh line are used toapproximate derivatives and its application is limite
针对基于瞬时无功理论的传统有源滤波器在三相四线制电路中不适用,简要分析了有源滤波和瞬时无功理论,综合运用瞬时无功理论中的p-q方法和ip-iq方法,提出了一种基于瞬时无功