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S.S. Gupta and K.G. Bhattacharyya, Immobilization of Pb(II), Cd(II) and Ni(II) ions on kaolinite and montmorillonite surfaces from aqueous medium, Journal of Environmental Management, Vol. 87, No. 1, 2008

Krishna G. Bhattacharyya and Susmita Sen Gupta, Influence of acid activation on adsorption of Ni(II) and Cu(II) on kaolinite and montmorillonite: Kinetic and thermodynamic study, Chemical Engineering Journal, Vol.136, No. 1, 2008

N. Fiol, I. Villaescusa, M. Martínez, N. Miralles, J. Poch and J. Serarols, Sorption of Pb(II), Ni(II), Cu(II) and Cd(II) from aqueous solution by olive stone waste, Separation and Purification Technology, Vol.50 No.1, 2006

Robertson, K., et al, Identifying refractory nickel in acid mine drainage lime treatment sludge, Canadian Metallurgical Quarterly, Vol.45 No.1, 2006

G. Ekosse, D.J. van den Heever, L. de Jager, O. Totolo, Environmental chemistry and mineralogy of particulate air matter around Selebi Phikwe nickel-copper plant, Botswana. Minerals Engineering, Vol.17 No.2, 2004

M.A. Abdel-latif. Recovery of vanadium and nickel from petroleum flyash. Minerals Engineering, Vol.15, No.11 (supplement), 2002

A.M. Amer. Processing of Egyptian boiler-ash for extraction of vanadium and nickel. Waste Management, Vol.22 No.5, 2002

E. Ruth-Balaganskaya, O. Kudrjavtseva. Sulphur migration in the soil-plant system contaminated by deposits from nickel industry: a field manipulation. Environmental Pollution, Vol.117 No.2, 2002

N. Ortiz, M.A.F. Pires, J.C. Bressiani. Use of steel converter slag as nickel adsorber to wastewater treatment. Waste Management, Vol.21 No.7, 2001

T. Vengris, R. Binkiene, A. Sveikauskaite. Nickel, copper and zinc removal from waste water by a modified clay sorbent. Applied Clay Science, vol.18 No.3-4, 2001

K.N. Njau, M.v. Woude, G.J. Visser, L.J.J. Janssen. Electrochemical removal of nickel ions from industrial wastewater. Chemical Engineering Journal, Vol.79 No.3, 2000

Forbes, P., von Blottnitz, H., Gaylard, P., and Petrie, J.G.,  Environmental assessment of base metal processing: a nickel refining case study. Journal South African IMM, Vol. 100 No. 6, 2000

MV Kozlov, E Haukioja, AV Bakhtiarov, DN Stroganov, SN Zimina. Root versus canopy uptake of heavy metals by birch in an industrially polluted area: contrasting behaviour of nickel and copper. Environmental Pollution, Vol.107 No.3, 2000

S. Monni, M. Salemaa, N. Millar. The tolerance of Empetrum nigrum to copper and nickel. Environmental Pollution, Vol.109 No.2, 2000