白酒糟对刚果红和孔雀石绿的吸附机理研究  

Adsorption mechanism of distillers' grain to conge red and malachite green

作　　者：朱晓莲[1] 刘子辉[2] 杨兴[1] 孙宜胜 张庆乐[1] 张丽青[1] 

机构地区：[1]泰山医学院化工学院,泰安271016 [2]山东省泰安第一中学,泰安271000

出　　处：《化工新型材料》2016年第2期207-209,213,共4页New Chemical Materials

基　　金：教育部大学生科技创新训练计划项目(201510439049;201410439003);泰安市科技发展计划(2015GX2042)

摘　　要：采用白酒糟吸附剂对模拟印染废水中刚果红(CR)和孔雀石绿(MG)进行生物吸附处理。在染料初始质量浓度100mg/L、吸附时间80min的条件下,当刚果红废水初始pH=7.0,白酒糟投加量为2g/L时,白酒糟对刚果红的吸附率为96.94%;当孔雀石绿废水初始pH=9.0,白酒糟投加量4g/L时,白酒糟对孔雀石绿的吸附率为95.12%。动力学研究表明,白酒糟对两种染料的吸附过程均符合准二阶动力学方程,表明该吸附过程以化学吸附为主。使用Freundlich等温吸附方程可较好的拟合白酒糟对两种染料的吸附,说明该吸附是以多分子层吸附为主。Conge red and malachite green in the simulated dye wastewater were adsorbed using distillers＇ grains. Under the conditions of initial dye mass concentration 100mg/L and adsorption time 80 min, the adsorption rate of conge red was 96. 94% when the initial pH of conge red wastewater was 7.0 and the adsorbent dosage was 2g/L. The adsorption rate of malachite green was about 95.12% when the initial pH of malachite green wastewater was 9.0 and the adsorbent dosage was 4g/L. The kinetics results indicated that the adsorptions of distillers＇ grains accorded with the pseudo-secondorder kinctics equation,indicating that the adsorption process was dominated by multimolecular layer adsorption. Freundlich model can fitly describe the two adsorptions.

关 键 词：白酒糟 刚果红 孔雀石绿 吸附 动力学 傅里叶红外光谱分析 

分 类 号：TQ424[化学工程] X791[环境科学与工程—环境工程]