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）.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2012年第12期13-15,26,共4页
Nonferrous Metals（Extractive Metallurgy)
