[1] P. Meshram, Abhilash, B.D. Pandey, Advanced review on extraction of nickel from primary and secondary sources, Miner. Process. Extr. Metall. Rev. 40(3) (2019) 157-193. [2] G. Alvial-Hein, H. Mahandra, A. Ghahreman, Separation and recovery of cobalt and nickel from end of life products via solvent extraction technique: A review, J. Clean. Prod. 297(2021) 126592. [3] A. von Gleich, R.U. Ayres, S. Gossling-Reisemann, Sustainable metals management: Securing our future-steps towards a closed loop economy (Vol. 19). Springer Science & Business Media, Berlin, Germany, 2007. [4] S. Stankovic, Z. Kamberovic, B. Friedrich, S.R. Stopic, M. Sokic, B. Markovic, A. Schippers, Options for hydrometallurgical treatment of Ni-Co lateritic ores for sustainable supply of nickel and cobalt for European battery industry from south-eastern Europe and Turkey, Metals 12(5) (2022) 807. [5] Y.A. El-Nadi, Solvent extraction and its applications on ore processing and recovery of metals:Classical approach, Sep. Purif. Rev. 46(3) (2017) 195-215. [6] M. Petranikova, B. Ebin, C. Tunsu, Selective recovery of cobalt from the secondary streams after NiMH batteries processing using Cyanex 301, Waste Manag. 83(2019) 194-201. [7] N. Mans, D. Van Der Westhuizen, D. Bruinsma, P. Cole, J. Du Toit, E. Munnik, A. Coates, V. Coetzee, H. Krieg, Cobalt-nickel pertraction refinery to process pregnant leach solution from recycled spent catalysts. Part 1: Cobalt extraction from a binary system, Solvent Extr. Ion Exch. 38(4) (2020) 441-454. [8] G. Zante, M. Boltoeva, A. Masmoudi, R. Barillon, D. Trebouet, Selective separation of cobalt and nickel using a stable supported ionic liquid membrane, Sep. Purif. Technol. 252(2020) 117477. [9] T.L. Zhou, B. Pesic, A pyridine-based chelating solvent extraction system for selective extraction of nickel and cobalt, Hydrometallurgy 46(1-2) (1997) 37-53. [10] P.W. Zhang, T. Yokoyama, T.M. Suzuki, K. Inoue, The synergistic extraction of nickel and cobalt with a mixture of di(2-ethylhexyl) phosphoric acid and 5-dodecylsalicylaldoxime, Hydrometallurgy 61(3) (2001) 223-227. [11] C.Y. Cheng, Solvent extraction of nickel and cobalt with synergistic systems consisting of carboxylic acid and aliphatic hydroxyoxime, Hydrometallurgy 84(1-2) (2006) 109-117. [12] M. Janiszewska, A. Markiewicz, M. Regel-Rosocka, Hydrometallurgical separation of Co(II) from Ni(II) from model and real waste solutions, J. Clean. Prod. 228(2019) 746-754. [13] F. Hu, H.P. Hu, Y.Q. Luo, Y.X. Wang, J.P. Yang, J.G. Hu, The separation of Ni(II) over base metal ions in acidic polymetallic medium: Synergistic extraction and structural evidence, Hydrometallurgy 181(2018) 240-247. [14] J.S. Preston, A.C. du Preez, Solvent extraction of nickel from acidic solutions using synergistic mixtures containing pyridinecarboxylate esters. Part 1. Systems based on organophosphorus acids, J. Chem. Technol. Biotechnol. 66(1) (1996) 86-94. [15] J.W. Roebuck, P.J. Bailey, E.D. Doidge, A.J. Fischmann, M.R. Healy, G.S. Nichol, N. O’Toole, M. Pelser, T. Sassi, K.C. Sole, P.A. Tasker, Strong and selective Ni(II) extractants based on synergistic mixtures of sulfonic acids and bidentate N-heterocycles, Solvent Extr. Ion Exch. 36(5) (2018) 437-458. [16] Z.G. Xu, T. Zhou, Q. Zou, Y.X. Wang, F. Yang, S.C. Wang, C.H. Wang, X.F. Jin, Mextral® 6103H/naphthenic acid/TOPO synergistic extraction system for recovery of nickel and cobalt from nickel laterite, Miner. Eng. 180(2022) 107476. [17] S. Gmar, F. Mutelet, A. Chagnes, Effect of the addition of amine in organophosphorus compounds on molecular structuration of ionic liquids-application to solvent extraction, Molecules 25(11) (2020) 2584. [18] W.S. Liu, H. Su, J. Zhang, L.N. Wang, Y.H. Liu, J. Liang, Z.W. Zhu, Synthesis of N-(2-ethylhexyl)-pyridine-4-carboxamide and its synergistic behaviors with dinonylnaphthalene sulfonic acid for the selective extraction of nickel and cobalt, Sep. Purif. Technol. 286(2022) 120385. [19] C.Y. Cheng, M.D. Urbani, M.G. Davies, Y. Pranolo, Z.W. Zhu, Recovery of nickel and cobalt from leach solutions of nickel laterites using a synergistic system consisting of Versatic 10 and Acorga CLX 50, Miner. Eng. 77(2015) 17-24. [20] S. Mondal, V. Kumar, J.N. Sharma, R.C. Hubli, A.K. Suri, Evaluation of n-octyl(phenyl) phosphinic acid (OPPA) as an extractant for separation of cobalt(II) and nickel(II) from sulphate solutions, Sep. Purif. Technol. 89(2012) 66-70. [21] F. Hu, H.P. Hu, J.P. Yang, Y.Q. Luo, M. Lundstrom, G.F. Ji, J.G. Hu, Preferential extraction of Ni(II) over Co(II) by arylsulphonic acid in the presence of pyridinecarboxylate ester: Experimental and DFT calculations, J. Mol. Liq. 291(2019) 111253. [22] J.S. Preston, A.C. du Preez, Solvent extraction of nickel from acidic solutions using synergistic mixtures containing pyridinecarboxylate esters. Part 3. Systems based on arylsulphonic acids, J. Chem. Technol. Biotechnol. 71(1) (1998) 43-50. [23] Z.G. Xu, T. Zhou, Q. Zou, F. Yang, Y.X. Wang, S.C. Wang, C.H. Wang, Solvent extraction of Ni and Co from Ni-laterite leach solutions using a new synergistic system consisting of Versatic 10 acid, Mextral 6103H and Aliquat 336 with elemental mass balance for leaching, precipitation, solvent extraction, scrubbing and stripping, Hydrometallurgy 208(2022) 105822. [24] D.M. He, L. Zeng, G.Q. Zhang, Q.G. Li, W.J. Guan, Z.Y. Cao, S.X. Wu, Mechanism of nickel extraction from sulfuric acid medium by synthesized α-aminophosphonate derivative, Appl. Organomet. Chem. 33(9) (2019) e5082. [25] K. Visvaganesan, E. Suresh, M. Palaniandavar, Highly selective hydroxylation of alkanes catalyzed by (micro-oxo) bis(micro-carboxylato)-bridged diiron(III) complexes: Involvement of mononuclear iron(III) species in catalysis, Dalton Trans. (19) (2009) 3814-3823. [26] G.J.P. Britovsek, J. England, A.J.P. White, Non-heme iron(II) complexes containing tripodal tetradentate nitrogen ligands and their application in alkane oxidation catalysis, Inorg. Chem. 44(22) (2005) 8125-8134. [27] K. Visvaganesan, R. Mayilmurugan, E. Suresh, M. Palaniandavar, Iron(III) complexes of tridentate 3N ligands as functional models for catechol dioxygenases: The role of ligand N-alkyl substitution and solvent on reaction rate and product selectivity, Inorg. Chem. 46(24) (2007) 10294-10306. [28] J.H. Cheng, T. Lu, X. Wu, H.J. Zhang, C.Y. Zhang, C.A. Peng, S.Q. Huang, Extraction of cobalt(II) by methyltrioctylammonium chloride in nickel(II)-containing chloride solution from spent lithium ion batteries, RSC Adv. 9(39) (2019) 22729-22739. [29] S.Q. Yu, J.Y. Chen, C.Y. Chen, Synergistic extraction of ferric iron in sulfate solutions by tertiary amine and 2-ethylhexyl 2-ethylhexylphosphonic acid (HEHEHP) or dialkylphosphonic acid, Hydrometallurgy 22(1-2) (1989) 183-192. [30] J. Shamir, P. Sobota, Raman spectrum of [MgCl(THF)5][FeCl4]·THF, J. Raman Spectrosc. 22(9) (1991) 535-536. [31] Z. Li, K. Binnemans, Mechanism of ferric chloride facilitating efficient lithium extraction from magnesium-rich brine with tri-n-butyl phosphate, Ind. Eng. Chem. Res. 60(23) (2021) 8538-8547. [32] G.A. Voyiatzis, A.G. Kalampounias, G.N. Papatheodorou, The structure of molten mixtures of iron(III) chloride with caesium chloride, Phys. Chem. Chem. Phys. 1(20) (1999) 4797-4803. [33] Q. Sun, H. Chen, J.G. Yu, Investigation on the lithium extraction process with the TBP-FeCl3 solvent system using experimental and DFT methods, Ind. Eng. Chem. Res. 61(13) (2022) 4672-4682. [34] E.C. Sklute, S. Kashyap, M.D. Dyar, J.F. Holden, T. Tague, P. Wang, S.J. Jaret, Spectral and morphological characteristics of synthetic nanophase iron (oxyhydr) oxides, Phys. Chem. Miner. 45(1) (2018) 1-26. [35] A. Tapparo, V. Di Marco, D. Badocco, S. D’Aronco, L. Solda, P. Pastore, B.M. Mahon, M. Kalberer, C. Giorio, Formation of metal-organic ligand complexes affects solubility of metals in airborne particles at an urban site in the Po Valley, Chemosphere 241(2020) 125025. [36] N. Manousi, D.A. Giannakoudakis, E. Rosenberg, G.A. Zachariadis, Extraction of metal ions with metal-organic frameworks, Molecules 24(24) (2019) 4605. [37] X.H. Li, K. Binnemans, Oxidative dissolution of metals in organic solvents, Chem. Rev. 121(8) (2021) 4506-4530. [38] S.H. Joo, D.J. Shin, C. Oh, J.P. Wang, G. Senanayake, S.M. Shin, Selective extraction and separation of nickel from cobalt, manganese and lithium in pre-treated leach liquors of ternary cathode material of spent lithium-ion batteries using synergism caused by Versatic 10 acid and LIX 84-I, Hydrometallurgy 159(2016) 65-74. [39] N.K. Batchu, Z. Li, B. Verbelen, K. Binnemans, Structural effects of neutral organophosphorus extractants on solvent extraction of rare-earth elements from aqueous and non-aqueous nitrate solutions, Sep. Purif. Technol. 255(2021) 117711. [40] E. Fernandez-Escalante, R. Ibanez, M.F. San-Roman, Selective lithium separation from desalination concentrates via the synergy of extractant mixtures, Desalination 556(2023) 116525. [41] S. Zhu, H.P. Hu, J.G. Hu, J.Y. Li, F. Hu, Y.X. Wang, The coordination structure of the extracted copper(II) complex with a synergistic mixture containing dinonylnaphthalene sulfonic acid and n-hexyl 3-pyridinecarboxylate ester, J. Mol. Struct. 1144(2017) 191-198. [42] A.J.M. Santanilla, P. Aliprandini, J. Benvenuti, J.A.S. Tenorio, D.C.R. Espinosa, Structure investigation for nickel and cobalt complexes formed during solvent extraction with the extractants Cyanex272, Versatic 10 and their mixtures, Miner. Eng. 160(2021) 106691. [43] Q.Y. Zheng, Z.Y. Cao, S.X. Wu, Q.G. Li, M.Y. Wang, W.J. Guan, G.Q. Zhang, Direct extraction of Ni(II) from acidic polymetallic sulfate media with a novel synergistic extraction system of DNNSA-MSL211, ACS Sustainable Chem. Eng. 11(8) (2023) 3416-3428. [44] A.I. Okewole, N.P. Magwa, Z.R. Tshentu, The separation of nickel(II) from base metal ions using 1-octyl-2-(2’-pyridyl)imidazole as extractant in a highly acidic sulfate medium, Hydrometallurgy 121(2012) 81-89. [45] K.R. Barnard, G.L. Nealon, M.I. Ogden, B.W. Skelton, Crystallographic determination of three Ni-α-hydroxyoxime-carboxylic acid synergist complexes, Solvent Extr. Ion Exch. 28(6) (2010) 778-792. |