以弱碱性树脂去除废水中5-氨基-2-氯甲苯-4-磺酸和盐酸:平衡及动力学  

Removal of 5-amino-2-chlorotoluene-4-sulfonic and hydrochloric acids from wastewater by weakly basic resin:equilibrium and kinetics

作　　者：李长海[1,2] 

机构地区：[1]滨州学院 [2]长春工业大学化工学院,吉林长春130012

出　　处：《化工学报》2007年第6期1494-1500,共7页CIESC Journal

基　　金：吉林省自然科学基金项目(990337)。~~

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。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.

关 键 词：5-氨基-2-氯甲苯-4-磺酸 吸附 弱碱性树脂 

分 类 号：TQ028.3[化学工程]