活性炭纤维电吸附去除水中Cd^(2+)的研究  

Study on Electrosorption of Cd^(2+) on Activated Carbon Fiber

作　　者：段小月[1] 赵滨海[1] 高铭[1] 张昕然[1] 

机构地区：[1]吉林师范大学环境科学与工程学院,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2016年第1期94-96,共3页Journal of Jilin Normal University:Natural Science Edition

基　　金：吉林省科技发展计划项目(20150520079JH)

摘　　要：采用不同浓度氢氧化钠溶液对活性炭纤维进行改性,利用改性后的活性炭纤维电吸附去除水中Cd^(2+)离子,结果表明:采用2 mol/L NaOH改性后的活性炭纤维具有更高的Cd^(2+)去除率.因此,实验采用2 mol/L NaOH改性活性炭纤维电极研究电压、温度、Cd^(2+)初始浓度对电吸附去除Cd^(2+)效果的影响.实验结果表明:电压越高,Cd^(2+)去除率越高;温度越高,Cd^(2+)去除率也越高,但是温度太高,溶液蒸发严重;Cd^(2+)初始浓度越大,Cd^(2+)去除率越低,但吸附容量增大.除此以外,电吸附循环实验表明Na OH改性活性炭纤维电极在电吸附Cd^(2+)过程具有良好的再生性.In this study, the activated carbon fiber was modified with NaOH solution and used to removal Cd^2＋ ions in water by electrosorption. The results showed that the highest Cd^2＋ removal ratio was obtained by the activated carbon fiber modified with 2 mol/L NaOH solution. Thus, the influences of potential, temperature, and Cd^2＋ initial concentration on the removal ratio of Cd^2＋ were investigated with the modified activated carbon fiber by 2 mol/L NaOH solution. The results showed that the higher potential and temperature, the higher Cd^2＋ removal ratio, but serious evaporation occurred at too high temperature. With the increase of Cd^2＋ initial concentration, the Cd^2＋ removal ratio reduced while the adsorption capacity increased. In addition, the regeneration experiments indicated that the electrosorption/desorption ratios did not reduce after 4 cycles.

关 键 词：氢氧化钠 活性炭纤维 改性 电吸附 Cd^2+离子 

分 类 号：TQ116.2[化学工程—无机化工]