改性茶渣对电镀废水中Cr^(6+)的吸附特性  

Adsorption characteristic of modified tea dregs for Cr^(6+) in electroplating wastewater

作　　者：王子波[1] 林业星[1] 孙江 潘顺龙[1] 智文婷[1] 

机构地区：[1]扬州大学环境科学与工程学院,江苏扬州225127 [2]扬州市环境保护局,江苏扬州225009

出　　处：《扬州大学学报（自然科学版）》2011年第3期74-78,共5页Journal of Yangzhou University：Natural Science Edition

基　　金：扬州市环保科研基金资助项目(YHK1003)

摘　　要：研究了改性茶渣对电镀废水中Cr6+的吸附,探讨温度、pH对吸附性能的影响,并对吸附过程进行动力学分析.结果表明:当进水pH为7.5(25℃)时,0.4g改性茶渣处理Cr6+质量浓度为2.852mg.L-1的电镀废水35mL,吸附平衡时间为120min,Cr6+平衡吸附量为0.214mg.g-1,吸附过程符合二级动力学模型.Cr（Ⅵ） in electroplating wastewater was adsorbed by modified tea dregs,and the influence of temperature and pH was discussed in the adsorption process.The kinetics characteristic of the course was analyzed.35 mL electroplating wastewater（Cr^6＋ concentration 2.852 mg·L-1） was treated by 0.4 g modified tea dregs at temperature 25 ℃ and pH 7.5.The {equilibrium} time was 120 min,and the equilibrium amount was 0.214 mg·g-1.Kinetics analysis showed the adsorption of modified tea dregs for Cr^6＋ fitted the pseudo-second-order model very well.

关 键 词：铬离子 电镀废水 改性茶渣 废水处理 吸附动力学 

分 类 号：X781.1[环境科学与工程—环境工程] X703.1