D113离子交换树脂对Mn(Ⅱ)的吸附性能  

Adsorption Properties of D113 Ion-exchange Resin on Mn(Ⅱ)

作　　者：宋秀玲[1] 刑建宇[1] 王春艳[1] 张彩峰[1] 钱会[1] 

机构地区：[1]长安大学环境科学与工程学院,西安710054

出　　处：《有色金属（冶炼部分）》2012年第12期13-15,26,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：在常温条件下研究D113树脂吸附Mn(Ⅱ)的过程。结果表明,当溶液pH为6.5～7.0、吸附时间120min时,废水中Mn(Ⅱ)离子去除率可以达到99%,吸附容量为136.98mg/g。盐酸浓度为3～4mol/L时,一次解吸率均达100%。该树脂对Mn(Ⅱ)的吸附曲线符合Langmuir和Freundlich吸附等温线,吸附交换过程符合HO准二级动力学方程式。内扩散系数随溶液pH、溶液中Mn(Ⅱ)浓度的增大而增大。The adsorption of Dl13 resin on Mn（Ⅱ） was investigated at room temperature. I he results snow that the removal rate of Mn （Ⅱ） in aqueous solution reaches 99 % and the adsorption capacity of Mn （ Ⅱ ） is 136.98 mg/g on the conditions including the pH value of the aqueous solution of 6.5-7.0 and the ad- sorption duration of 120 rain. The desorption rate of Mn （ Ⅱ） reaches 100% when the concentration of hy- drochloric acid is 3-4 mol/L. The adsorption curve of Dl13 resin on Mn （Ⅱ） agrees well with the Lang- muir and the Freundlich isothermal adsorption equation, and the adsorption kinetic data well fit the HO pseudo-second-order rate equation. The internal diffusion coefficient increases with the rise of solution pH value and the concentration of Mn（Ⅱ）.

关 键 词：D113树脂 Mn(Ⅱ) 吸附 动力学 

分 类 号：TQ342.84[化学工程—化纤工业] TF804.3[冶金工程—有色金属冶金]