膜科学与技术

陶瓷膜浓缩Iota卡拉胶的初步研究

作者：邓杨桦¹，²，张凯松¹

单位： 1．中国科学院城市环境研究所，厦门361021; 2．中国科学院大学，北京100049

关键词： iota-卡拉胶；陶瓷膜；浓缩

出版年,卷(期):页码： 2015,35(1):91-96

摘要：

本文以Al2O3 /ZrO2陶瓷膜浓缩Iota卡拉胶.实验中考察了不同初始浓度，操作压力，膜面流速和运行温度等因素对膜通量、卡拉胶浓缩倍数、膜总阻力的影响.结果表面：受到凝胶层厚度，粘度等的影响，陶瓷膜的浓缩效果不同。获得的最佳操作参数是：当初始浓度为1%时，操作压力为0.2MPa，错流速度为4.8m/s,运行温度为70℃.该结果采用陶瓷膜浓缩Iota卡拉胶的广阔前景.

In this work, the different operation parameters were compared in terms of water flux，concentration
times and membrane total resistance . The concentration of iota carrageenan solutions were carried out in a tube Al2O3 /ZrO2 ceramic membrane. Although a similar overall driving force and other parameters was used, the attenuation of membrane flux obtained using the high concentration 2% was less than half of that observed using the less concentration 0.25 %, due to gel layer effects. A faster results can observed on proper trans-membrane pressure, cross flow velocity. From these studies, it could be concluded
that, the 3.6 m/s and 0.2MPa has advantages over other parameters , not only in terms of water flux, but also concentration times and membrane total resistance. Finally, the concentration of different operation temperature was carried out. Due to the presence of low dynamic viscosity in high temperature, a
lower mass transfer resistance was observed at 70℃. The results show the good potential of the ceramic membrane for concentration of iota carrageenan.

邓杨桦（1986年-），男，四川乐山人，硕士研究生，主要研究领域：膜制备与应用

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