title: Selective recovery of vanadium and scandium by ion exchange with D201 and solvent extraction using P507 from hydrochloric acid leaching solution of red mud.
abstract: D201 resin and P507 extractant diluted with sulfonated kerosene were used to respectively separate vanadium and scandium, and impurity ions from hydrochloric acid leaching solution of red mud. More than 99% of vanadium was selectively adsorbed from the hydrochloric acid leaching solution under the conditions of pH value of 1.8, volume ratio of leaching solution to resin of 10, and flow rate of 3.33 mL/min. Maximum extraction and separation of scandium was observed from the acid leaching solution at an aqueous pH value of 0.2. More than 99% of scandium can be selectively extracted using 15% P507, 5% TBP at the aqueous solution/organic phase (A/O) ratio of 10:1 for 6 min. The loaded organic phase was washed with 0.3 mol/L sulfuric acid, wherein most impurities were removed. After the process of desorption or stripping, precipitation, and roasting, high-purity V2O5and Sc2O3were obtained. Finally, a conceptual flow sheet was established to separate and recover vanadium and scandium from red mud hydrochloric acid leaching solution.
authors.affiliation: School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan, 454000, China; Collaborative Innovation Center of Coal Mine Safety of Henan Province, Henan Polytechnic University, China. Electronic address: zhuxiaobo0119@126.com.
authors.forename: Xiaobo
authors.initials: X
authors.lastname: Zhu
authors.affiliation: School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan, 454000, China; Collaborative Innovation Center of Coal Mine Safety of Henan Province, Henan Polytechnic University, China. Electronic address: liwang0805@126.com.
authors.forename: Wang
authors.initials: W
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan, 454000, China; Collaborative Innovation Center of Coal Mine Safety of Henan Province, Henan Polytechnic University, China.
authors.forename: Sen
authors.initials: S
authors.lastname: Tang
authors.affiliation: School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan, 454000, China; Collaborative Innovation Center of Coal Mine Safety of Henan Province, Henan Polytechnic University, China.
authors.forename: Majian
authors.initials: M
authors.lastname: Zeng
authors.affiliation: School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan, 454000, China; Collaborative Innovation Center of Coal Mine Safety of Henan Province, Henan Polytechnic University, China.
authors.forename: Pengyuan
authors.initials: P
authors.lastname: Bai
authors.affiliation: School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, Henan, 454000, China; Collaborative Innovation Center of Coal Mine Safety of Henan Province, Henan Polytechnic University, China.
authors.forename: Lunjian
authors.initials: L
authors.lastname: Chen
mesh_terms: D006851:Hydrochloric Acid / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D007474:Ion Exchange; D007475:Ion Exchange Resins / Q000737:chemistry*; D012538:Scandium / Q000302:isolation & purification*; D012996:Solutions; D012997:Solvents / Q000737:chemistry*; D013464:Sulfuric Acids / Q000737:chemistry; D014639:Vanadium / Q000302:isolation & purification*; D017968:Vanadium Compounds / Q000302:isolation & purification
chemical_list: D007220:Industrial Waste; D007475:Ion Exchange Resins; D012996:Solutions; D012997:Solvents; D013464:Sulfuric Acids; D017968:Vanadium Compounds; D014639:Vanadium; C066075:vanadium pentoxide; C033158:sulfuric acid; D006851:Hydrochloric Acid; C046254:scandium oxide; D012538:Scandium
keywords: Ion exchange; Scandium; Selective recovery; Solvent extraction; Vanadium