摘要
实验室条件下采用硝酸铁加热蒸发制备覆铁砂,并考察pH值、投加量对吸附效果的影响,分析吸附等温线和吸附动力学。研究结果表明,在一定范围内,投加量增大,覆铁砂吸附性能增强,pH的变化对吸附效果影响不大,其吸附属于Langmuir型单层吸附,符合准二级动力学模型。
The adsorption of antimony on the covered iron sand prepared by iron nitrate was analyzed.The effects of adding amount and pH value on antimony adsorption of iron ore were investigated.The experimental results show that the removal rate of iron clad sand is over 95%in the pH range of 4~9.The adsorption kinetics of coated iron sand was in accordance with the second-order reaction kinetics model,and the experimental data of adsorption isotherm were in accordance with Langmuir isothermal adsorption model.
作者
蔡维炯
曹长春
陈朋铭
Cai Weijiong;Cao Changchun;Chen Pengming(School of Environmental Science and Engineering,Guilin University of Technology,Guilin 541000,China)
出处
《广东化工》
CAS
2020年第21期13-14,32,共3页
Guangdong Chemical Industry
基金
广西环境污染控制理论与技术重点实验室项目《重金属铅镉与有机物水环境行为研究》(GH2015123111)。
关键词
覆铁砂
富里酸
锑
吸附
动力学
iron oxide coated sand
fulvic acid
antimony
adsorption
dynamics
