改性锯末对铜离子吸附性能的研究  

Research on Adsorption Properties of Modified Sawdust for Copper Ions

作　　者：周彤 ZHOU Tong(College of Food and Environmental Engineering,Chuzhou Polytechnic,Chuzhou 239000,Anhui,China)

机构地区：[1]滁州职业技术学院食品与环境工程学院,安徽滁州239000

出　　处：《韶关学院学报》2024年第3期66-71,共6页Journal of Shaoguan University

基　　金：安徽省高校自然科学研究重点项目(2023AH053085);滁州职业技术学院自然科学研究一般项目(YJY-2019-11)。

摘　　要：采用化学改性法将氮元素引入天然锯末表面,并用于水体中铜离子的去除;同时考察了吸附剂用量、背景离子浓度、pH值、吸附时间等条件对改性锯末吸附Cu^(2+)能力的影响.结果表明背景离子浓度对吸附过程影响很小、60 min时间内的吸附量可到最大吸附量的85%.此外,对改性锯末的吸附动力学和吸附等温线进行非线性拟合,结果表明分别符合准一级动力学方程和Freundlich等温吸附模型.The modified sawdust were prepared by introducing amino into the surface of natural sawdust by chemical modification method to remove Cu^(2+)in waste water.The effects of adsorbent dosage,background ion concentration,pH value and adsorption time on the adsorption ability of modified sawdust for Cu^(2+)were studied.The results showed that the background ion concentration had little effect on the adsorption process,and the adsorption capacity of the modified sawdust could reach 85%of the maximum adsorption capacity after 60 min.In addition,nonlinear fitting was performed on the adsorption kinetics and adsorption isotherms of modified sawdust,and the results were in accordance with the quasi first order kinetic equation and the Freundlich isotherm adsorption model,respectively.

关 键 词：改性 锯末 吸附 铜离子 

分 类 号：X703.1[环境科学与工程—环境工程] O647.32[理学—物理化学]