Abstract:

The adsorption of two acids, 5-amino-2-chlorotoluene-4-sulfonic acid and hydrochloric acid from their solution onto weakly basic resin was investigated.The kinetics and isotherm were studied.The results indicated that the adsorption of 5-amino-2-chlorotoluene-4-sulfonic acid and hydrochloric acid all obeyed Langmuir isotherm, and was in good agreement with the second-order kinetics and the first-order kinetics models, respectively, and the adsorption process was pore diffusion controlled.Sorptive afinity of 5-amino-2-chlorotoluene-4-sulfonic acid on D301R was higher than hydrochloric acid.Thermodynamic parameters for the adsorption of acids were calculated and discussed.

摘要：

考察了废水中5-氨基-2-氯甲苯-4-磺酸（CLT）和盐酸（HCl）在弱碱性离子交换树脂D301R上的吸附。研究了吸附平衡及动力学行为。结果表明两种酸在D301R树脂上的吸附遵循Langmuir吸附平衡模型;CLT吸附动力学过程与二级反应模型相吻合;HCl与一级反应模型吻合得较好;吸附过程为孔扩散控制。CLT在树脂上的吸附度大于HCl。计算了吸附过程热力学参数并进行了讨论。