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Ndlovu, B., and Mahlangu, T., Calcium and magnesium rejection from sulphate solutions in lateritic nickel solvent extraction using Versatic 10 acid-LIX 84-1C system, Journal of the South African Institute of Mining and Metallurgy, Vol.108, No.4, 2008

M. Tanaka, Y. Huang, T. Yahagi, M.K. Hossain, Y. Sato, H. Narita, Solvent extraction recovery of nickel from spent electroless nickel plating baths by a mixer-settler extractor, Separation and Purification Technology, Vol. 62, No. 1, 2008

B.K. Loveday, The use of oxygen in high pressure acid leaching of nickel laterites, Minerals Engineering, Vol.21 No.7, 2008

H.R. Watling, The bioleaching of nickel-copper sulfides, Hydrometallurgy, Vol. 91, No.1-4, 2008

R.G. McDonald and B.I. Whittington, Atmospheric acid leaching of nickel laterites review: Part I. Sulphuric acid technologies, Hydrometallurgy, Vol. 91, No.1-4, 2008

R.G. McDonald and B.I. Whittington, Atmospheric acid leaching of nickel laterites review. Part II. Chloride and bio-technologies, Hydrometallurgy, Vol. 91, No.1-4, 2008

A. Buch, M. Stambouli and D. Pareau, Kinetics of nickel(II) extraction by 2-ethylhexanal oxime in ammonium nitrate solutions, Separation and Purification Technology, Vol.60 No.2, 2008

Yan-Zhao Yang, Tao Zhu, Chuan-Bo Xia, Xue-Mei Xin, Ling Liu and Zhan-Yu Liu, Study on the extraction of cobalt and nickel from NH₄SCN solution by Winsor II microemulsion system, Separation and Purification Technology, Vol.60 No.2, 2008

Y.F. Shen, W.Y. Xue, W. Li and Y.L. Tang, Selective recovery of nickel and cobalt from cobalt-enriched Ni-Cu matte by two-stage counter-current leaching, Separation and Purification Technology, Vol.60 No.2, 2008

E. Konigsberger, L.-C. Konigsberger, P. May and B. Harris, Properties of electrolyte solutions relevant to high concentration chloride leaching. II. Density, viscosity and heat capacity of mixed aqueous solutions of magnesium chloride and nickel chloride measured to 90^oC, Hydrometallurgy, Vol. 90, No.2-4, 2008

I. Giannopoulou and D. Panias, Differential precipitation of copper and nickel from acidic polymetallic aqueous solutions, Hydrometallurgy, Vol. 90, No.2-4, 2008

P.K. Parhi, S. Panigrahi, K. Sarangi and K.C. Nathsarma, Separation of cobalt and nickel from ammoniacal sulphate solution using Cyanex 272, Separation and Purification Technology, Vol.59 No.3, 2008

du Preez, R., et al, Solvent extraction test work to evaluate a Versatic 10/Nicksyn synergistic system for nickel-calcium separation. J. Southern African IMM, Vol. 107, No. 10, 2007

B. Ramachandra Reddy, S. Venkateswara Rao and D. Neela Priya, Selective separation and recovery of divalent Cd and Ni from sulphate solutions with mixtures of TOPS 99 and Cyanex 471 X, Separation and Purification Technology, Vol.59 No.2, 2008

P.K. Parhi and K. Sarangi, Separation of copper, zinc, cobalt and nickel ions by supported liquid membrane technique using LIX 84I, TOPS-99 and Cyanex 272, Separation and Purification Technology, Vol.59 No.2, 2008

M.S. Safarzadeh, D. Moradkhani, M.O. Ilkhchi and N.H. Golshan, Determination of the optimum conditions for the leaching of Cd-Ni residues from electrolytic zinc plant using statistical design of experiments, Separation and Purification Technology, Vol. 58, No. 3, 2008

B.A. Moore, J.R. Duncan and J.E. Burgess, Fungal bioaccumulation of copper, nickel, gold and platinum, Minerals Engineering, Vol. 21, No. 1, 2008

Oustadakis, P., et al, Bulk precipitation of nickel and cobalt from sulphate leach liquor by CaO pulp, Mineral Processing and Extractive Metallurgy (Trans. IMM C), Vol.116, No.4, 2007

K.-H. Park, D. Mohapatra, K. Hong-In and G. Xueyi, Dissolution behavior of a complex Cu-Ni-Co-Fe matte in CuCl₂-NaCl-HCl leaching medium, Separation and Purification Technology, Vol.56 No.3, 2007

D. Darvishi, D.F. Haghshenas, S. Etemadi, E. Keshavarz Alamdari and S.K. Sadrnezhaad, Water adsorption in the organic phase for the D2EHPA-kerosene/water and aqueous Zn²⁺, Co²⁺, Ni²⁺ sulphate systems, Hydrometallurgy, Vol.88 No.1-4, 2007

I. Giannopoulou and D. Panias, Copper and nickel recovery from acidic polymetallic aqueous solutions, Minerals Engineering, Vol.20 No.8, 2007

Kun Huang, Qi-wei Li and Jing Chen, Recovery of copper, nickel and cobalt from acidic pressure leaching solutions of low-grade sulfide flotation concentrates, Minerals Engineering, Vol.20, No.7, 2007

Yu Liu and Hui Xu, Equilibrium, Thermodynamics and mechanisms of Ni2+ biosorption by aerobic granules, Biochemical Engineering Journal, Vol.35, No.2, 2007

K.-H. Park, D. Mohapatra, B.R. Reddy and C.-W. Nam, A study on the oxidative ammonia/ammonium sulphate leaching of a complex (Cu-Ni-Co-Fe) matte, Hydrometallurgy, Vol.86 No.3-4, 2007

B. Preetha and T. Viruthagiri, Bioaccumulation of chromium(VI), copper(II) and nickel(II) ions by growing Rhizopus arrhizus, Biochemical Engineering Journal, Vol.34 No.2, 2007

E.-y. Kim, J.-c. Lee, B.-S. Kim, M.-S. Kim and J. Jeong, Leaching behavior of nickel from waste multi-layer ceramic capacitors, Hydrometallurgy, Vol.86 No.1-2, 2007

M. Landers and R.J. Gilkes, Dehydroxylation and dissolution of nickeliferous goethite in New Caledonian lateritic Ni ore, Applied Clay Science, Vol.35 No.3-4, 2007

M. Baghalha, V.G. Papangelakis and W. Curlook, Factors affecting the leachability of Ni/Co/Cu slags at high temperature, Hydrometallurgy, Vol.85 No.1, 2007

S. Mohapatra, S. Bohidar, N. Pradhan, R.N. Kar and L.B. Sukla, Microbial extraction of nickel from Sukinda chromite overburden by Acidithiobacillus ferrooxidans and Aspergillus strains, Hydrometallurgy, Vol.85 No.1, 2007

B. Ash, J. Kheti, K. Sanjay, T. Subbaiah, S. Anand and R.K. Paramguru, Physico-chemical and electro-chemical properties of nickel hydroxide precipitated in the presence of metal additives, Hydrometallurgy, Vol.84 No.3-4, 2006

K.H. Park, D. Mohapatra and B.R. Reddy, A study on the acidified ferric chloride leaching of a complex (Cu-Ni-Co-Fe) matte, Separation and Purification Technology, Vol.51 No.3, 2006

K.H. Park, B.R. Reddy, S.H. Jung and D. Mohapatra, Transfer of cobalt and nickel from sulphate solutions to spent electrolyte through solvent extraction and stripping, Separation and Purification Technology, Vol.51 No.3, 2006

A. Dib and L. Makhloufi, Mass transfer correlation of simultaneous removal by cementation of nickel and cobalt from sulphate industrial solution containing copper: Part II: Onto zinc powder, Chemical Engineering Journal, Vol.123 No.1-2, 2006

Chu Yong Cheng, Solvent extraction of nickel and cobalt with synergistic systems consisting of carboxylic acid and aliphatic hydroxyoxime, Hydrometallurgy, Vol.84 No.1-2, 2006

J. Nan, D. Han, M. Yang, M. Cui and X. Hou, Recovery of metal values from a mixture of spent lithium-ion batteries and nickel-metal hydride batteries, Hydrometallurgy, Vol.84 No.1-2, 2006

L.R.G. Santos, A.F. Barbosa, A.D. Souza and V.A.Leão, Bioleaching of a complex nickel-iron concentrate by mesophile bacteria, Minerals Engineering, Vol.19 No.12, 2006

L. Le, J. Tang, D. Ryan and M. Valix, Bioleaching nickel laterite ores using multi-metal tolerant Aspergillus foetidus organism, Minerals Engineering, Vol.19 No.12, 2006

V. Thangavelu, J. Tang, D. Ryan and M. Valix, Effect of saline stress on fungi metabolism and biological leaching of weathered saprolite ores, Minerals Engineering, Vol.19 No.12, 2006

J.A. Tang and M. Valix, Leaching of low grade limonite and nontronite ores by fungi metabolic acids, Minerals Engineering, Vol.19 No.12, 2006

A. Deepatana, J.A. Tang and M. Valix, Comparative study of chelating ion exchange resins for metal recovery from bioleaching of nickel laterite ores, Minerals Engineering, Vol.19 No.12, 2006

S. Donegan, Direct solvent extraction of nickel at Bulong operations, Minerals Engineering, Vol.19 No.12, 2006

M. Mackenzie, M. Virnig and A. Feather, The recovery of nickel from high-pressure acid leach solutions using mixed hydroxide product - LIX^®84-INS technology, Minerals Engineering, Vol.19 No.12, 2006

P. Oustadakis, S. Agatzini-Leonardou and P.E. Tsakiridis, Nickel and cobalt precipitation from sulphate leach liquor using MgO pulp as neutralizing agent, Minerals Engineering, Vol.19 No.11, 2006

Lamya, R.M., and Lorenzen, L., Atmospheric acid leaching of nickel-copper matte from Impala Platinum Refineries, Journal of the South African Institute of Mining and Metallurgy, Vol.106 No.6, 2006

J. Ke and H. Li, Bacterial leaching of nickel-bearing pyrrhotite, Hydrometallurgy, Vol.82 No.3-4, 2006

Muir, D.M., and Ho, E., Process review and electrochemistry of nickel sulphides and nickel mattes in acidic sulphate and chloride media, Minerals Processing and Extractive Metallurgy (Trans. IMM C), , Vol.115 No.2, 2006

J.E. Dutrizac and A. Kuiper, The solubility of calcium sulphate in simulated nickel sulphate-chloride processing solutions, Hydrometallurgy, Vol.82 No.1-2, 2006

C.E. Borba, R. Guirardello, E.A. Silva, M.T. Veit and C.R.G. Tavares, Removal of nickel(II) ions from aqueous solution by biosorption in a fixed bed column: Experimental and theoretical breakthrough curves, Biochemical Engineering Journal, Vol.30 No.2, 2006

B.R. Reddy, D.N. Priya and K.H. Park, Separation and recovery of cadmium(II), cobalt(II) and nickel(II) from sulphate leach liquors of spent Ni-Cd batteries using phosphorus based extractants, Separation and Purification Technology, Vol.50 No.2, 2006

J.M. Monteagudo, et al, Treatment of aqueous solutions containing nickel using crandallite-type compounds, Journal of Chemical Technology & Biotechnology, Vol.81 No.3, 2006

R. Coskun, C. Soykan, M. Sacak, Adsorption of copper(II), nickel(II) and cobalt(II) ions from aqueous solution by methacrylic acid/acrylamide monomer mixture grafted poly(ethylene terephthalate) fiber , Separation and Purification Technology, Vol.49 No.2, 2006

R.S. Juang, H.C. Kao, W. Chen, Column removal of Ni(II) from synthetic electroplating waste water using a strong-acid resin , Separation and Purification Technology, Vol.49 No.1, 2006

P.K. Gbor, S. Hoque, C.Q. Jia, Dissolution behavior of Fe, Co, and Ni from non-ferrous smelter slag in aqueous sulphur dioxide, Hydrometallurgy, Vol.81 No.2, 2006

Salo-Zieman, V.L.A., et al, Bioleaching of acid-consuming low-grade nickel ore with elemental sulfur addition and subsequent acid generation, Journal of Chemical Technology & Biotechnology, Vol.81 No.1, 2006

M. Seggiani, S. Vitolo, S. D'Antone, Recovery of nickel from Orimulsion fly ash by iminodiacetic acid chelating resin, Hydrometallurgy, Vol.81 No.1, 2006

J.A. Brown, V.G. Papangelakis, Interfacial studies of liquid sulphur during aqueous pressure oxidation of nickel sulphide , Minerals Engineering, Vol.18 No.15, 2005

J.A. Johnson, B.C. Cashmore and R.J. Hockridge, Optimisation of nickel extraction from laterite ores by high pressure acid leaching with addition of sodium sulphate , Minerals Engineering, Vol.18 No.13-14, 2005

Zhang, Y., and Banks, C., The interaction between Cu, Pb, Zn and Ni in their biosorption onto polyurethane-immobilised sphagnum moss, Journal of Chemical Technology & Biotechnology, Vol.80 No.11, 2005

A.A. Atia, A.M. Donia, A.E. Shahin, Studies on the uptake behavior of a magnetic Co₃O₄-containing resin for Ni(II), Cu(II) and Hg(II) from their aqueous solutions, Separation and Purification Technology, Vol.46 No.3, 2005

G. Zhang, Z. Fang, The contribution of direct and indirect actions in bioleaching of pentlandite. Hydrometallurgy, Vol.80 No.1-2, 2005

Y. Xie, Y. Xu, L. Yan, R. Yang, Recovery of nickel, copper and cobalt from low-grade Ni-Cu sulfide tailings. Hydrometallurgy, Vol.80 No.1-2, 2005

W. Mulak, B. Miazga, A. Szymczycha, Kinetics of nickel leaching from spent catalyst in sulphuric acid solution, International Journal of Mineral Processing, Vol.77 No.4, 2005

Holloway, P.C. et al, Atmospheric leaching of oil sands fly ash from Syncrude and Suncor, Minerals & Metallurgical Processing, Vol.22 No.3, 2005

Palmer, C. M. Johnson, G. D., The Activox; Process: Growing Significance in the Nickel Industry. JOM, Vol.57 No.7, 2005

F.D. Mendes, A.H. Martins, Selective nickel and cobalt uptake from pressure sulfuric acid leach solutions using column resin sorption, International Journal of Mineral Processing, Vol.77 No.1, 2005

F.D. Mendes, A.H. Martins, Recovery of nickel and cobalt from acid leach pulp by ion exchange using chelating resin, Minerals Engineering, Vol.18 No.9, 2005

K.H. Park, H.I. Kim, R.P. Das, Selective acid leaching of nickel and cobalt from precipitated manganese hydroxide in the presence of chlorine dioxide. Hydrometallurgy, Vol.78 No.3-4, 2005

B.I. Whittington, J.A. Johnson, Pressure acid leaching of arid-region nickel laterite ore. Part III: Effect of process water on nickel losses in the residue. Hydrometallurgy, Vol.78 No.3-4, 2005

J.A. Johnson, R.G. McDonald, D.M. Muir, J.P. Tranne, Pressure acid leaching of arid-region nickel laterite ore. Hydrometallurgy, Vol.78 No.3-4, 2005

T. Sana, K. Shiomori, Y. Kawano, Extraction rate of nickel with 5-dodecylsalicylaldoxime in a vibro-mixer, Separation and Purification Technology, Vol.44 No.2, 2005

Z. Zeledón-Toruño et al, Nickel and copper removal from aqueous solution by an immature coal (leonardite): effect of pH, contact time and water hardness, Journal of Chemical Technology & Biotechnology, Vol.80 No.6, 2005

K. Vijayaraghavan, J. Jegan, K. Palanivelu, M. Velan, Biosorption of cobalt(II) and nickel(II) by seaweeds: batch and column studies, Separation and Purification Technology, Vol.44 No.1, 2005

H.Y. Lee, S.G. Kim, J.K. Oh, Electrochemical leaching of nickel from low-grade laterites. Hydrometallurgy, Vol.77 No.3-4, 2005

B.R. Reddy, D. Neela Priya, S. Venkateswara Rao, P. Radhika, Solvent extraction and separation of Cd(II), Ni(II) and Co(II) from chloride leach liquors of spent Ni-Cd batteries using commercial organo-phosphorus extractants. Hydrometallurgy, Vol.77 No.3-4, 2005

G. Jyotsna et al, Investigation of adsorption of lead, mercury and nickel from aqueous solutions onto carbon aerogel., Journal of Chemical Technology & Biotechnology, Vol.80 No.4, 2005

L.E. Calzado, C.O. Gomez, J.A. Finch, Nickel recovered from solution by oxidation using ozone: some physical properties, Minerals Engineering, Vol.18 No.5, 2005

A. Mukherjee, A.M. Raichur, J.M. Modak, K.A. Natarajan, Dissolution of Cu, Co and Ni from ocean nodules by l-ascorbic acid, Chemical Engineering & Processing, Vol.44 No.7, 2005

R.S. Juang, H.C. Kao, Extraction separation of Co(II)/Ni(II) from concentrated HCl solutions in rotating disc and hollow-fiber membrane contactors., Separation and Purification Technology, Vol.42 No.1, 2005

Cullaj, A., et al, Investigation of the potential of several plants for phytoremediation of nickel contaminated soils and for nickel phytoextraction. European Journal of Mineral Processing and Environmental Protection, Vol.4 No.2, 2004

E.D. van Hullebusch, M. H. Zandvoort and P.N.L. Lens, Nickel and cobalt sorption on anaerobic granular sludges: kinetic and equilibrium studies. Journal of Chemical Technology & Biotechnology, Vol.79 No.11, 2004

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