柚子皮对镉离子的吸附性能分析  

Adsorption of Cadmium ion by Pomelo Peel

作　　者：吴方棣[1,2] 黄世珍 胡家朋 李素琼[3] 伍璟 WU Fangdi;HUANG Shizhen;HU Jiapeng;LI Suqiong;WU Jing(Fujian Provincial Key Laboratory of Eco-Industrial Green Technology,Wuyishan,Fujian 354300;School of Ecological and Resource Engineering,Wuyi University,Wuyishan,Fujian 354300;School of Life Sciences,Jiaying University,Meizhou,Guangdong 514015)

机构地区：[1]武夷学院福建省生态产业绿色技术重点实验室,福建武夷山354300 [2]武夷学院生态与资源工程学院,福建武夷山354300 [3]嘉应学院生命科学学院,梅州广东514015

出　　处：《武夷学院学报》2020年第12期25-30,共6页Journal of Wuyi University

基　　金：武夷学院高级人才引进项目(YJ201703);福建省大学生创新创业训练计划项目(201810397036,201710397061);福建省中青年教师教育科研项目(JAT190771);武夷学院青年基金项目(XD201701)。

摘　　要：以柚子皮为吸附剂,考察了其对水溶液中Cd^(2+)的吸附行为。分析了柚子皮的主要组成,结果表明其以半纤维素为主。通过静态吸附实验,考察了pH值、吸附剂用量、温度、Cd^(2+)初始浓度、吸附时间等对Cd^(2+)吸附效果的影响,结果表明:在pH为5,温度为25℃,初始浓度为5 mg/L,吸附剂用量0.15 g、吸附60 min时柚子皮对Cd^(2+)的吸附效果最佳。等温吸附研究表明吸附过程更符合Langmuir等温方程。动力学研究表明Cd^(2+)在柚子皮上的吸附符合拟二级吸附动力学方程。The adsorption Cd^(2+)in aqueous solution by pomelo peel was investigated.The main components of pomelo peel were analyzed.The results showed that the main component of pomelo peel was hemicellulose.The effects of pH value,adsorbent dosage,temperature,initial concentration of Cd^(2+)and adsorption time on the adsorption of Cd^(2+)were investigated by static adsorption experiment.The results showed that the best adsorption result of pomelo peel on Cd^(2+)was obtained when pH was 5,temperature was 25℃,initial concentration of Cd^(2+)was 5 mg/L,adsorbent dosage was 0.15 g and adsorption time was 60 min.The results showed that the adsorption process was more in line with Langmuir isotherm equation.The kinetic study showed that the adsorption of Cd^(2+)on pomelo peel conformed to the pseudo second order adsorption kinetic equation.

关 键 词：柚子皮 吸附 Cd^(2+)离子 

分 类 号：X52[环境科学与工程—环境工程]