典型文献
The selective adsorption of rare earth elements by modified coal fly ash based SBA-15
文献摘要：
Rare earth elements(REE)are strategic resources and the recycling of REE in alternative resources is urgent and gets increasingly attention.However,the separation of REE in these alternative resources is still a challenge due to the low concentration of REE and multi coexisted ions in acidic system.In this study,the species distribution of REE within the pH 0-8.0 was calculated.The SBA-15 originated from coal fly ash was modified by two steps with(3-aminopropyl)triethoxysilane(APTES)and diethylenetri-aminepentaacetic dianhydride(DTPADA)to obtain DTPADA-SBA-15 adsorbent,which was applied to the selective adsorption of REE.The results showed that DTPADA-SBA-15 possessed excellent adsorption per-formance on the selective adsorption of REE,including Eu,Gd,Tb,Nd and Sm,in acidic solution(pH 2)with multi competing ions.The FT-IR and Zeta potential characterization verified that the chemical adsorption through the coordination of O in DTPADA-SBA-15 with REE was dominant at lower pH value.The study of adsorption kinetics indicated that the adsorption of rare earth metal ions followed pseudo-second-order kinetic,of which the adsorption process followed the Langmuir isotherm model.
文献关键词：
中图分类号：
作者姓名：
Jinglei Cui;Qian Wang;Jianming Gao;Yanxia Guo;Fangqin Cheng
作者机构：
State Environmental Protection Key Laboratory of Efficient Resource Utilization Techniques of Coal Waste,Institute of Resources and Environmental Engineering,Shanxi Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes,Shanxi University,Taiyuan 030006,China
文献出处：
引用格式：
[1]Jinglei Cui;Qian Wang;Jianming Gao;Yanxia Guo;Fangqin Cheng-.The selective adsorption of rare earth elements by modified coal fly ash based SBA-15)[J].中国化学工程学报（英文版）,2022(07):155-164
A类：
diethylenetri,aminepentaacetic,DTPADA
B类：
selective,adsorption,rare,earth,elements,by,modified,coal,fly,ash,SBA,Rare,REE,strategic,resources,recycling,alternative,urgent,gets,increasingly,attention,However,separation,these,still,challenge,due,concentration,multi,coexisted,ions,acidic,system,In,this,study,species,distribution,within,was,calculated,originated,from,two,steps,aminopropyl,triethoxysilane,APTES,dianhydride,obtain,adsorbent,which,applied,results,showed,that,possessed,excellent,per,formance,including,Eu,Gd,Tb,Nd,Sm,solution,competing,FT,Zeta,potential,characterization,verified,chemical,through,coordination,dominant,lower,value,kinetics,indicated,metal,followed,pseudo,second,order,process,Langmuir,isotherm,model
AB值：
0.512797
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