001×7树脂对电镀废水中Cu^(2+)吸附性能研究

Adsorption Behavior of 001×7 Resin for Cu^(2+) from Electroplating Wastewater

001×7强酸性苯乙烯系阳离子树脂处理电镀含铜废水,着重研究了p H值、处理时间、流速对吸附效果的影响,同时对吸附动力学做了数学模拟。结果表明,适宜的处理条件是:p H为2,流速为4BV/h,穿透时间为883min。在上述条件下,001×7树脂对Cu2+吸附效果良好,吸附容量为35.32g/L,吸附过程属于液膜扩散控制过程。用10%的盐酸溶液作为解吸剂,解吸率达96.1%。同时实验探讨了树脂吸附Cu2+的机理,结果表明,001×7树脂吸附Cu2+时主要依靠范德华力。

Copper- containing electroplating wastewater was treated by 001 × 7 styrene- based strongly acidic cation exchange resin,and the effects of p H,processing time,flow rate on adsorption capacities are inspected and adsorption kinetics are mathematically simulated. The results indicated that adsorptive capacities of 001 × 7resin on Cu^2 ＋is better. The optimal conditions were the p H of 2,flow rate of 4BV / h with Dynamic adsorption.Under this condition,adsorption capacity was 35. 32 g / L,and the adsorption was controlled by liquid film diffusion. When 10% HCl was used as the desorbent,the rate of the desorption was up to 96. 1%. In addition,The adsorptive mechanics of 001 x 7 resin for Cu2 ＋was discussed. The results showed that Vander Waals force was mainly depended on the adsorption of Cu^2 ＋by 001 × 7 resin.