摘要
采用花生壳为原料,以50%氯化锌溶液为花生壳原料的活化剂,采用功率为640 W的微波照射4 min的改性方法制备成改性花生壳。结果表明:未改性花生壳对Cu2+的去除效果劣于改性花生壳。改性花生壳吸附Cu2+的最佳投加量为0.2 g,最适合的pH值为6,最佳的吸附时间为12 h。其动力学行为符合Lagergren的准二级反应动力学模型。
The adsorbent was prepared from peanut shell by using ZnC12 as activating agent, copper in aqueous solution was used as adsorbate, the influence of pH, adsorbent dosage, temperature, contact time were investigated through dynamic tests. Then the kinetics of modified peanut shell was studied. The results showed that the modified peanut shell had maximum adsorption efficiency when the pH was 6, the dosage was 0.2 g, the temperature was 25℃ and the contact time was 12 h. By substituting experimental data into kinetics models, quasi-second-order kinetics model could better describe the kinetics of modified peanut shell adsorbing CuE＋.
出处
《广东农业科学》
CAS
CSCD
北大核心
2013年第19期175-177,182,共4页
Guangdong Agricultural Sciences
基金
中央高校基本科研业务费专项资金资助-青年教师百人计划(SWJTU09BR171)
西南交通大学实验教学与实验技术项目(201202)
关键词
花生壳
改性
CU2+
吸附
动力学
peanut shell
modified
Cu2＋
adsorption
thermodynamics
