以壳聚糖膜及硫酸交联壳聚糖膜为基础、以乙醇-水体系为研究对象,考察了浓度、温度、交联对壳聚糖膜以及硫酸交联壳聚糖膜的传递行为的影响.实验结果表明,对壳聚膜糖膜和硫酸交联壳聚糖膜来说,渗透通量与分离性能强烈地取决于原料组成.组分在膜内溶胀分配关系随原料浓度的改变而改变,这种溶胀过程的热力学分配关系直接支配着渗透汽化的分离性能.随着温度的上升,乙醇与水的渗透通量急剧增加,而溶胀度变化不大.表明在一定的温度范围内,温度对传递过程的影响主要表现在温度的变化引起扩散速度的变化.
参考文献
| [1] | 让 耐尔;平郑骅 .渗透蒸发研究的现状[J].高分子通报,1995,30:193-204. |
| [2] | Mulder M H;Smolders C A .On the mechanism of separation of ethanol/water mixtures by pervaporation.I Calculations of concentration profiles[J].Journal of Membrane Science,1984,17:289-307. |
| [3] | Hans O E Karlsson;Gun Tragardh .Pervaporation of dilute organic-waters mixtures.A literature review on modeling studies and application to aroma compound recovery[J].Journal of Membrane Science,1993,76:121-146. |
| [4] | Liang L.;Ruckenstein E. .POLYVINYL ALCOHOL-POLYACRYLAMIDE INTERPENETRATING POLYMER NETWORK MEMBRANES AND THEIR PERVAPORATION CHARACTERISTICS FOR ETHANOL-WATER MIXTURES[J].Journal of Membrane Science,1995(1/2):167-182. |
| [5] | Takashi Uwatsubo;Toshi Masucka;Kensaku Mizoguchi .Relationship between permselectivity and permeability in pervaporation of water-alcohol mixture[J].Journal of Membrane Science,1992,65:51-58. |
| [6] | Tadashi Uragami;Katsumi Takigawa .Permeation and separation characteristics of ethanol - water mixtures through chitosan derivative membranes by pervaporation and evaporation[J].Polymer,1990,31:668-672. |
| [7] | Huang R Y M.Pervaporation membrane separation processes[M].Elsevier Amsterdam:The Netherlands,1991:391-431. |
| [8] | Akira Mochizuki;Shietoshi Amiya .A pervaporation separation of water/ethanol mixtures through polysaccharide membranes ( Ⅲ ). The permselectivity of the neutralized chitosan membrane and the relationships between its permselectivity and solid state structure[J].Journal of Applied Polymer Science,1989,37:3385-3398. |
| [9] | 陈联楷,黄继才,郭群晖,苑学竞,方军.壳聚糖渗透汽化膜分离醇/水的性能 Ⅰ.壳聚糖均质膜[J].水处理技术,1996(04):183. |
| [10] | 杨苹;林一铮;江成璋 .渗透汽化膜行为研究(1).壳聚糖膜的分离性能与溶解吸附平衡的关系[J].水处理技术,1996,16(01):25-32. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%