二乙烯三胺基木质素吸附Cu^(2+)、Ni^(2+)的性能研究  

Adsorption of Cu^(2+) and Ni^(2+) by Diethylene triamine-based Lignin

作　　者：夏强[1] 任立[1] 王松[1] 李浩[1] 

机构地区：[1]陕西理工学院化学与环境科学学院,陕西汉中723001

出　　处：《广东化工》2013年第11期21-22,共2页Guangdong Chemical Industry

基　　金：陕西理工学院2012-2013学年"大学生创新创业训练计划项目"基金(UIRP12009)

摘　　要：以木质素与二乙烯三胺原料,通过环氧氯丙烷交联,制得一种新型金属离子吸附剂二乙烯三胺基木质素,通过吸附实验考察了pH、吸附时间及重金属离子浓度对其吸附Cu2+、Ni2+的影响。在pH=5,温度25℃的条件下,二乙烯三胺基木质素对Cu2+、Ni2+的饱和吸附量为44.84mg/g、34.13 mg/g,吸附符合二级动力学吸附方程,吸附过程比较符合Langmuir型等温吸附曲线。Diethylene triamine-based Iignin, a novel adsorbent for heavy metals was prepared with diethylene triamine and lignin by epichlorohydrin crosslink. The effects of pH, reaction time and initial concentration on the adsorption capacity of the beads for Cu2＋, Ni2＋ were investigated. At 25℃, pH=5, the adsorption capacities of Cu2＋, Ni2＋ by Diethylene triamine-based lignin were 44.84 rag/g, 34.13 mg/g. The adsorption process followed pseudo-second-order kinetics and fit the Langmuir adsorption isotherm models.

关 键 词：二乙烯三胺 木质素 镍离子 铜离子 

分 类 号：X703[环境科学与工程—环境工程]