Synergistic solvent extraction system of bis(pyridin-2-ylmethyl)dodecan-1-amine and dinonylnaphthalene for enhanced selective extraction of nickel and cobalt  

作　　者：Bharat Prasad Sharma Tianzhang Wang Yufeng Liang Jinping Xiong Liangrong Yang Zheng Li 

机构地区：[1]Beijing Key Laboratory of Electrochemical Process and Technology of Materials,Beijing University of Chemical Technology,Beijing 100029,China [2]State Key Laboratory of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China [3]School of Chemistry and Chemical Engineering,Shandong University,Jinan 250100,China [4]School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 101408,China [5]CAS Key Laboratory of Green Process and Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China [6]Key Laboratory of Green and High-end Utilization of Salt Lake Resources,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Journal of Chemical Engineering》2025年第1期10-18,共9页中国化学工程学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(22278407,22001147,21922814,22138012,22178349);CAS Project for Young Scientists in Basic Research(YSBR-038);the Ministry of Science and Technology of China(2021YFC2901500);Excellent Member in Youth Innovation Promotion Association,Chinese Academy of Sciences(Y202014);Shandong Energy Institute(SEI U202306).

摘　　要：Simultaneous recovery of Ni and Co from Fe(Ⅲ)and Al is a critical challenge in hydrometallurgical processes.Recognized solvent extraction systems often struggle with selectivity and effective performance in mixed metal ion environments.Herein,a new synergistic solvent extraction(SSX)system comprised of a novel pyridine analog,N,N-bis(pyridin-2-ylmethyl)dodecan-1-amine(BPMDA),and dinonylnaphthalene sulfonic acid(DNNSA)with tributyl phosphate as phase modifier is introduced.The SSX system demonstrates high extraction performance achieving>90%for Ni and>97%for Co in a singlestage extraction process,with high selectivity.Under optimal conditions,the selectivity sequence is observed as Co^(2+)(>97%)>Ni^(2+)(>90%)>Mn^(2+)(<20%)>Fe^(3+)(<10%)>Mg^(2+)(<5%)>Al^(3+)(<2%)>Ca^(2+)(<1%).Spectroscopic analysis evidences the preferential binding of BPMDA with Ni and Co in the presence of DNNSA,concurrently achieving a significant reduction in the co-extraction of Fe(Ⅲ)and Al.The selective complexation of Ni and Co using the SSX system offers a highly efficient and selective approach for their extraction,with promising potential for applications in recovery-based processes.

关 键 词：Nickel and cobalt extraction Synergistic solvent extraction DNNSA Pyridine HYDROMETALLURGY 

分 类 号：O62[理学—有机化学]