典型文献
Separation and recovery of rare earth from waste nickel-metal hydride batteries by phosphate based extraction-precipitation
文献摘要：
A novel type of extraction-precipitation strategy based on phosphate was developed to recover rare earth(RE,i.e.,La,Ce,Nd,and Pr)from waste nickel-metal hydride(NiMH)batteries.This method does not require saponification and organic solvents.The novel phosphates,i.e.,dibenzyl phosphate(DBP),diphenyl phosphate(DPP),triphenyl phosphate(TPP)were studied as extraction-precipitants.DBP has high precipitation efficiencies for RE3+,which can reach 97.84％,100％,100％and 99.77％,respectively.In addition,the precipitation efficiencies of Mn2+,Co2+and Ni2+are less than 1.75％.DBP-RE has the largest particle size(D10=52.6 μm,D50=135.35 μm,D90=296.08 μm),which is much larger than the precipitations formed by NH4HCO3,H2C2O4,CaO and MgO.The larger precipitation particle sizes contribute to improving the solid-liquid separation efficiency.With 3 mol/L hydrochloric acid,the stripping efficiency of DBP-RE reaches 98.60％,and the purity of recovered RE is 99.85％.The regenerated DBP can be directly used for the recycling extraction.Therefore,the novel extraction-precipitation strategy is a green and sustainable separation method.
文献关键词：
中图分类号：
作者姓名：
Hailan Zhi;Shuainan Ni;Xiang Su;Wenqi Xie;Hepeng Zhang;Xiaoqi Sun
作者机构：
College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350007,China;Fujian CAS Key Laboratory of Design and Assembly of Functional Nanostructures,and Fujian Key Laboratory of Nanomaterials,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;Fujian Research Center for RE Engineering Technology,Xiamen Institute of RE Materials,Haixi Institute,Chinese Academy of Sciences,Xiamen 361021,China;Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths,Ganjiang Innovation Academy,Chinese Academy of Sciences,Ganzhou 341000,China;Ganzhou Rare Earth Group Co.,Ltd.,China Southern Rare Earth,Ganzhou 341000,China
文献出处：
引用格式：
[1]Hailan Zhi;Shuainan Ni;Xiang Su;Wenqi Xie;Hepeng Zhang;Xiaoqi Sun-.Separation and recovery of rare earth from waste nickel-metal hydride batteries by phosphate based extraction-precipitation)[J].稀土学报（英文版）,2022(06):974-980
A类：
NiMH,precipitants,Ni2+are
B类：
Separation,recovery,rare,earth,from,waste,nickel,metal,hydride,batteries,by,extraction,novel,type,strategy,developed,La,Ce,Nd,Pr,This,method,does,not,require,saponification,organic,solvents,phosphates,dibenzyl,DBP,diphenyl,DPP,triphenyl,TPP,were,studied,has,high,efficiencies,RE3+,which,can,respectively,In,addition,Mn2+,Co2+and,less,than,largest,particle,D10,D50,D90,much,larger,precipitations,formed,NH4HCO3,H2C2O4,CaO,MgO,sizes,contribute,improving,solid,liquid,separation,efficiency,With,hydrochloric,acid,stripping,reaches,purity,recovered,regenerated,directly,used,recycling,Therefore,green,sustainable
AB值：
0.561901
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