摘要： 采用活性炭纤维作为电极材料，经过盐酸改性后研究其电吸附去除水溶液中盐离子的效果。研究结果表明，工作电压越高去除效率越好；不同盐离子的吸附量与其平衡浓度之间的关系均较好地符合Freundlich等温式，Lagergren准二级动力学方程能很好地描述电吸附过程的整个阶段；含有不同价态的盐离子溶液，价态越高吸附效果越好；而含有同价态的盐溶液，电吸附更偏向选择水合半径小的离子，且价态大于水合半径对电吸附效果的影响。
关键词:
活性炭纤维,
电吸附,
盐离子,
选择吸附性
Abstract: Using hydrochloric acid modified activated carbon fiber(ACF) as electrode material,the electrosorption removing effect of ACF on saline ions from aqueous solution has been investigated. The results show that the higher the working voltage,the better the removing rate. The relationship between the adsorption capacity of different saline ions and its equilibrium concentration is good,complying with Freundlich isotherm,and the Lagergren quasi-second order kinetic equation could describe the whole stage of the electrosorption process quite well. It contains saline ion solution with different valence states. The higher the valence state,the better the adsorption effect. As far as the salt solution containing different valence states is concerned,the electrosorption prefers selecting ions with small hydration radius,and the influence of the valence state on electrosorption effect is greater than the influence of hydration radius on electrosorption effect.
Key words:
activated carbon fiber,
electrosorption,
saline ions,
selective adsorption
中图分类号:
魏永, 赵威, 石舟翔, 江晓栋, 姚维昊. ACF电吸附去除盐离子及其选择吸附性研究[J]. 工业水处理, 2018, 38(9): 37-40.
Wei Yong, Zhao Wei, Shi Zhouxiang, Jiang Xiaodong, Yao Weihao. Research on the removal of saline ions by electrosorption and its selective adsorption ability[J]. INDUSTRIAL WATER TREATMENT, 2018, 38(9): 37-40.