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Preparation of Double Carboxylic Corn Stalk Gels and Their Adsorption Properties Towards Rare Earths (III)  ( SCI-EXPANDED收录 EI收录)   被引量:8

文献类型:期刊文献

英文题名:Preparation of Double Carboxylic Corn Stalk Gels and Their Adsorption Properties Towards Rare Earths (III)

作者:Wang, Fuchun Zhao, Junmei Liu, Huizhou Luo, Yuan Wang, Wankun

第一作者:王福春

通信作者:Wang, WK[1]|[14440cf17aed2a4771c8e]王万坤;

机构:[1]Guizhou Inst Technol, Sch Mat & Met Engn, Key Lab Light Met Mat Proc Technol Guizhou Prov, Guiyang 550003, Guizhou, Peoples R China;[2]Chinese Acad Sci, Inst Proc, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China

第一机构:贵州理工学院材料与冶金工程学院

通信机构:corresponding author), Guizhou Inst Technol, Sch Mat & Met Engn, Key Lab Light Met Mat Proc Technol Guizhou Prov, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院材料与冶金工程学院;贵州理工学院;

年份:2018

卷号:9

期号:10

起止页码:1945-1954

外文期刊名:WASTE AND BIOMASS VALORIZATION

收录:;EI(收录号:20172203710771);Scopus(收录号:2-s2.0-85019711211);WOS:【SCI-EXPANDED(收录号:WOS:000444478500022)】;

基金:This work was supported by the National Natural Science Foundation of China (Grant Nos. 51504073 and 51404081), the Joint Research Program of the Science and Technology Department of Guizhou Province [Grant Nos. QianKeHe LH (2014) 7373 and QianKeHe LH (2014) 7372], the Research Program of the Education Department of Guizhou Province [Grant No. QianJiaoKeHe KY (2015) 433], the Research Program of Talented Scholars of Guizhou Institute of Technology (Grant No. XJG20141104).

语种:英文

外文关键词:Adsorption; Rare earths; Waste biomass; NaIO4; NaClO

摘要:A novel biosorbent, corn stalk gels with double carboxylic groups synthesized by two oxidation steps (the double carboxylic groups modified adsorbent is abbreviated as DCCS-2), was prepared, characterized, and applied for the recovery of rare earths (III) from the nitric media. For the whole lanthanides, it exhibits a distinct tetrad effect with the increase of atomic numbers. Taking Nd(III) as a representative element, the adsorption capacity, kinetics, selectivity and mechanism were investigated. Thermodynamics and kinetic fittings were found to abide by Langmuir and pseudo-second-order rate equations and the corresponding parameters were calculated. The maximum adsorption capacity was calculated to be 2.44mol/kg at 298K for DCCS-2. Results showed that the double carboxylic groups played an important role for improving the adsorption capacity, e.g. the adsorption capacity of Nd(III) by DCCS-2 increased to 53.5 times compared to the raw corn stalk. Furthermore, DCCS-2 also shows a good selectivity between Nd(III) and many non-rare earth metal ions. The cation exchange is proposed to be the possible adsorption mechanism.

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