Selectivity recovery of molybdenum(VI) from rhenium(VII) by amine-modified persimmon waste

作     者：Zhen-Ning Lou Ye-Xia Li Fu-Qiang Ren Qing Zhang Li Wan Zhi-Qiang Xing Shu-Liang Zang Ying Xiong 

作者机构：College of Chemistry Liaoning University 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2016年第35卷第6期

页      面：502-508页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21171080 and21201094) the National Science and Technology Pillar Program(No.2012BAF03B02) the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry(No.2011-1139) the Program for Liaoning Excellent Talents in University(No.LJQ2012001) 

主　　题：Persimmon Molybdenum Rhenium waste Adsorption Biomass Separation 

摘      要：Amine functional group was grafted to obtain modified persimmon waste gel （NH2-CPT） with the focus of development of selective recovery of molybdenum from rhenium. The adsorption behavior of the NH2-CPT gel for various metal ions at varying hydrochloric acid concen-trations was studied. It is found that the NH2-CPT exhibits high affinity for Mo（VI） and no affinity for Re（VII）, Cu（II）, Fe（III）, Mn（VII）, and Zn（II） under the operating conditions. The maximum adsorption capacity for Mo（VI） is 172 mg·g^-1, and the adsorption behavior obeys the Langmuir model. Owing to Mo（VI） as poly-anions, the adsorption mechanism of molybdenum anions could be explained as the anion exchange reactions at weak acid concentration, while neutral molecules could be explained as the complexation reactions at strong acid concentration, respectively. In addition, its excellent adsorption characteristics for Mo（VI） are confirmed by separation of Mo（VI） from Mo to Re containing industrial effluent.