| 流动电势测量法表征Al2O3微滤膜的表面电荷性能 |
| |
| 引用本文： | 张小珍,周健儿,冯均利,江瑜华.流动电势测量法表征Al2O3微滤膜的表面电荷性能[J].人工晶体学报,2009,38(2):340-345. |
| |
| 作者姓名： | 张小珍 周健儿 冯均利 江瑜华 |
| |
| 作者单位： | 景德镇陶瓷学院,江西省高校无机膜重点实验室,景德镇,333001;景德镇陶瓷学院,江西省高校无机膜重点实验室,景德镇,333001;深圳出入境检验检疫局,深圳,518045 |
| |
| 基金项目： | Chinese International Science and Technology Corporation Program，江西省自然科学基金 |
| |
| 摘 要： | 本文通过错流过滤方式下的流动电势测量对氧化铝微滤膜的电动性能进行表征,研究了过滤介质溶液pH、电解质种类和浓度等对膜的电动性能的影响.结果表明,膜流动电势大小取决于过滤溶液pH、电解质溶液种类和浓度.采用浓度为10-3M 的NaCl溶液为过滤介质时,膜的等电点为6.1,而采用相同浓度的CaCl2 和Na2SO4溶液时,由于对Ca2+和SO42-的特定吸附,膜等电点分别增大至6.8和减小至5.6.由于Ca2+和SO42-在膜孔表面存在特定吸附,溶液离子浓度提高导致膜的等电点和表面净电荷符号改变,而NaCl溶液浓度提高仅使膜流动电势逐渐减小,但等电点不变.
|
| 关 键 词： | 氧化铝 微滤膜 流动电势 等电点 电解质 |
Surface Charge Effect of Al_2O_3 Ceramic MF Membrane Determined by Streaming Potential Measurement |
| |
| ZHANG Xiao-zhen,ZHOU Jian-er,FENG Jun-li,JIANG Yu-hua.Surface Charge Effect of Al_2O_3 Ceramic MF Membrane Determined by Streaming Potential Measurement[J].Journal of Synthetic Crystals,2009,38(2):340-345. |
| |
| Authors: | ZHANG Xiao-zhen ZHOU Jian-er FENG Jun-li JIANG Yu-hua |
| |
| Institution: | 1.University Key Laboratory for Inorganic Membrane in Jiangxi Province;Jingdezhen Ceramic Institute;Jingdezhen 333001;China;2.Shenzhen Entry-Exit Inspection and Quarantine Bureau;Shenzhen 518045;China |
| |
| Abstract: | The electrokinetic properties of Al2O3 microfiltration membranes (MF) were characterized by streaming potential measurements during tangential filtration of solutions with various conditions of pH, electrolyte species and concentration. Results show that the streaming potentials are dependent on the pH of filtered solutions, types of the electrolyte and ionic concentration. The IEP of the membrane is about 6.1 when filtered with 10-3 mol/L NaCl solution, and shifts toward a higher pH of 6.8 and a lower pH o... |
| |
| Keywords: | alumina microfiltration membrane streaming potential isoelectric point electrolyte |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《人工晶体学报》浏览原始摘要信息 |
| 点击此处可从《人工晶体学报》下载免费的PDF全文 |
|
