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| 醋酸纤维素组合液膜迁移Cd~(2+)的研究 | |
| 引用本文： | 刘新芳,张晓宇,何鼎胜.醋酸纤维素组合液膜迁移Cd~(2+)的研究[J].河南师范大学学报(自然科学版),2008,36(2):88-91. |
| 作者姓名： | 刘新芳 张晓宇 何鼎胜 |
| 作者单位： | 1. 洛阳师范学院,化学系,河南,洛阳,471022 2. 河南科技大学,食品与生物工程学院,河南,洛阳,471003 3. 湖南师范大学,化学化工学院,长沙,410081 |
| 摘 要： | 论文用醋酸纤维素膜为固体支撑体,研究了镉离子在三辛胺-仲辛醇-二甲苯组合液膜体系中的迁移.考察了料液相和膜相搅拌速率、料液相H+和Cl-浓度、载体浓度、膜溶剂对镉离子迁移的影响,选择了迁移的最佳条件.迁移10 h后,含100 mg/L镉离子料液迁移率达98.5%,回收率达96.5%.当三辛胺浓度发生变化时,对镉离子传输的动力学过程进行分析,建立了镉离子传输的动力学方程并进行了验证.料液中氯离子浓度发生变化时,动力学方程同样成立. |
| 关 键 词： | 组合液膜 镉离子 动力学 |
| 文章编号： | 1000-2367(2008)02-0088-04 |
| 修稿时间： | 2007年7月11日 |
Transport of Cd2+ by Cellulose Acetate Hybrid Liquid Membrane |
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| LIU Xin-fang,ZHANG Xiao-yu,HE Ding-sheng.Transport of Cd2+ by Cellulose Acetate Hybrid Liquid Membrane[J].Journal of Henan Normal University(Natural Science),2008,36(2):88-91. | |
| Authors: | LIU Xin-fang ZHANG Xiao-yu HE Ding-sheng |
| Abstract: | In this article,the transport of cadmium(Cd2+) by a Tri-n-octylamine(TNOA)-secondary octyl-alcohol(ROH)-kerosene hybrid liquid membrane(HLM) system with cellulose acetate membranes(CAM)as solid supporting body is studied.The influence of stirring speed in feed and membrane solutions,HCl and Cl-concentration in feed phase,TNOA concentration and membrane solvent on transport of Cd2+ is investigated.The experiments indicate that the transport percentage of Cd2+ is 98.5% and the recovery percentage of Cd2+ is 96.5% after transport of 10 hours when the concentration of Cd2+ is 100 mg/L in feed phase.The dynamics model is performed when the concentration of TNOA varied from 0.05 mol/L to 0.30 mol/L.In addition,the dynamics model has been proved to be true. |
| Keywords: | hybrid liquid membrane cadmium ion dynamics |
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