纳米碳羟基磷灰石对Cd^(2+)的吸附  

Adsorption of Cd^(2+) from Aqueous Solutions onto Nano-Carbonate-Hydroxyapatite

作　　者：马安良[1] 张琛琛[1] 吴柳明[1] 

机构地区：[1]济南大学资源与环境学院,山东济南250022

出　　处：《济南大学学报（自然科学版）》2013年第1期67-70,共4页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金(20877035)

摘　　要：以人工合成的纳米碳羟基磷灰石(n-CHAP)吸附水溶液中的镉离子(Cd2+),考查pH值、反应时间及Cd2+初始浓度等因素对吸附效果的影响,并探讨吸附机理。结果表明:n-CHAP对Cd2+的吸附过程符合拟二级反应动力学方程;吸附类型符合Langmuir等温吸附模型,最大吸附量为86.17 mg/g。The adsorption of Cd2+ from aqueous solutions by synthetic nano-carbonate-hydroxyapatite(n-CHAP) was studied.The influence of different sorption parameters such as pH value of solution,contact time and initial concentration of Cd2+ were studied and the adsorption mechanism was discussed.It is shown that the Cd2+ adsorption by n-CHAP belongs to Langmuir isothermal adsorption,and fits with a pseudo second-order model,with the maximum capacity of 86.17 mg/g.

关 键 词：纳米碳羟基磷灰石 Cd2+ 吸附 

分 类 号：X703[环境科学与工程—环境工程]