有色金属科学与工程2024，Vol.15Issue(3)：457-463,7.DOI:10.13264/j.cnki.ysjskx.2024.03.016
玉米秸秆生物炭负载羟基磷灰石对稀土钇的吸附特性研究
Study on adsorption properties of yttrium on corn straw biochar loaded hydroxyapatite
摘要
Abstract
As a high abundance rare earth element,yttrium is widely used in various fields.In the mining process of ion-type rare earth,rare earth mother liquor will diffuse to the water body around the mining area,resulting in the waste of rare earth resources.To find an efficient material for absorbing rare earth yttrium,biochar(BC)was fired from corn straw and loaded with hydroxyapatite to prepare biochar composite material(HAP@BC).HAP@BC was characterized with SEM,XRD and FTIR.Single-factor adsorption experiments were conducted to investigate the effects of initial Y3+concentration,biochar dosage,pH,rotational speed and adsorption temperature on adsorption properties.Adsorption isotherms were used to analyze its adsorption characteristics,and desorption experiments were conducted to investigate its recycling performance.The results show that compared to BC,the adsorption capacity of HAP@BC has increased by three times,with a maximum adsorption capacity of 333.83 mg/g at pH 4.0.The adsorption process conforms to Langmuir monolayer adsorption model,and HAP@BC has good recycling performance,which is a potential Y3+high-efficiency adsorbent.关键词
生物炭/羟基磷灰石/稀土钇/影响因素/吸附特性Key words
biochar/hydroxyapatite/rare earth yttrium/influencing factors/adsorption characteristic分类
资源环境引用本文复制引用
左华伟,刘祖文,余正旺,罗进,田帅,李鑫鹏..玉米秸秆生物炭负载羟基磷灰石对稀土钇的吸附特性研究[J].有色金属科学与工程,2024,15(3):457-463,7.基金项目
国家自然科学基金资助项目(52160019) （52160019）
