Iron and copper recovery/removal from industrial wastes: A review

Industrial and Engineering Chemistry Research

Volumn 48, Issue 13, 2009, Pages 6145-6161

  Agrawal, Archana ^a   Kumari, S ^a   Sahu, K K ^a  

^a NATIONAL METALLURGICAL LABORATORY   (India)

Author keywords

[No Author keywords available]

Indexed keywords

BLEED STREAM; COPPER RECOVERY; CRITICAL REVIEW; ELECTROREFINING; IRON OXIDE SCALE; IRON RECOVERY; METAL EXTRACTIONS; METAL IMPURITIES; METAL VALUES; NEW APPROACHES; REFINING UNITS; RESEARCH COMMUNITIES; SOLVENT EXTRACTION METHODS; SURFACE FINISHING; WASTE STREAM;

CANNING; COPPER; INDUSTRIAL WASTES; IRON; IRON AND STEEL INDUSTRY; IRON AND STEEL PLANTS; IRON OXIDES; METAL REFINING; METALS; SCALE (DEPOSITS); SOLVENT EXTRACTION; SOLVENTS; STEEL; STEEL SHEET; UNDERWATER MINERAL RESOURCES; WASTE DISPOSAL; WASTEWATER RECLAMATION;

METAL RECOVERY;

EID: 67650786789     PISSN: 08885885     EISSN: None     Source Type: Journal    
DOI: 10.1021/ie900135u     Document Type: Review

References (241)

1. Agrawal, A.; Kumari, S.; Ray, B. C.; Sahu, K. K. Extraction of acid and iron values from sulphate waste pickle liquor of a steel industry by solvent extraction route. Hydrometatturgy 2007, 88, 58.
2. Nyirendar, L.; Phiri, W. S. The removal of nickel from copper electrorefining bleed-off electrolyte. Miner.Eng. 1998, 11 (1), 23.
3. Agrawal, A.; Bagchi, D.; Kumari, S.; Pandey, B. D. An overview of process options and behavioural aspects of the copper values recovered from copper bleed stream of a copper smelter developed at NML. Miner. Process. Extr. Metall. Rev., in press.
4. Shibata, J.; Hashiuchi, T.; Kato, T. Tamano refinery's new processes for removing impurities from electrolyte. In The Electrorefining and Winning of Copper; Proceeings of the 116th Annual Meeting, Denver, CO, Feb 24- 26; Hoffman, J. E., Bautista, R. G., Ettel, V. A., Kudryk, V., Wesel, R. J., Eds.; AIME: Pennsylvania, 1987; p 99.
5. Toyabe, K.; Segawa, C.; Sato, H. Impurity control of electrolyte at Sumitomo Nihama Copper refinery. In The Electrorefining and Winning of Copper; Proceeings of the 116th Annual Meeting, Denver, CO, Feb 24- 26; Hoffman, J. E., Bautista, R. G., Ettel, V. A., Kudryk, V., Wesel, R. J., Eds.; AIME: Pennsylvania, 1987; p 117.
6. Nagai, T.; Yama Zaki, N.; Kobayashi, M. Purification of copper electrolyte by solvent extraction. In 11th Meeting on Electrolytic Metallurgy Symposium on Solvent Extraction, July 1979; p 27.
7. Jha, M. K.; Kumar, V.; Singh, R. J. Solvent extraction of zinc from chloride solutions. Solvent Extr. Ion Exch. 2002, 20 (3), 389.
8. Ortiz, I.; Bringas, E.; Roman, M. F.; San and Urtiaga, A. M. Selective separation of zinc and iron from spent pickling solutions by membrane-based solvent extraction: process viability. Sep. Sci. Technol. 2004, 39,1.
9. Regel, M.; Sastre, A. M.; Szymanowski, J. Recovery of zinc(II) from HCl spent pickling solutions by solvent extraction. Environ. Sci. Technol. 2001, 35, 630.
10. Kirschling, P.; Nowak, K.; Miessiac, I.; Nitsch, W.; Szymanowsky, J. Membrane extraction-stripping process for zinc(II) recovery from HCl solution. Solvent Extr. Res. Dev. 2001, 8, 135.
11. Cierpezewski, R.; Miesiac, I.; Regel-Rosocka, M.; Sastre, A. M.; Szymanowki, J. Removal of zinc (II) from spent hydrochloric acid solutions from zinc hot galvanizing plants. Ind. Eng. Chem. Res. 2002, 41, 598.
12. Mishonov, I. V.; Alejski, K.; Szymanowski, J. A contributive study on the stripping of zinc (II) from loaded TBP using an ammonia/ammonium chloride solution. Solvent Extr. Ion Exch. 2004, 22, 219.
13. Dutrizac, J. E. The physical chemistry of iron precipitation in the zinc industry. In Lead-Zinc-Tin'80, TMS-AIME World Symposium on Metallurgy and Environment Control, Las Vegas, NV, February 24-28, 1980; Cigan, J. M., Mackey, T. S., O'Keefe, T. J., Eds.; TMS-AIME:Warrendale, PA, 1980; p 532.
14. Boxal, J. M.; James, S. E. Experience with the goethite process at National Zinc. In Iron Control in Hydrometallurgy; Dutrizac, J. E., Monhemius, A. J., Eds.; Ellis Horwood: Chichester, 1986; p 676.
15. Torfs, K. J.; Vliegen, J. The Union Miniere Goethite process: plant practice and future prospects. In Iron Control and Disposal; Dutrizac, J. E., Harris, G. B., Eds.; The Canadian Institute of Mining, Metallurgy and Petroleum: Montreal, Canada, 1996; pp 135- 146.
16. Ropenack, A. V. Hematite-the solution to a disposal problem-an example from the zinc industry. In Iron Control in Hydrometallurgy; Dutrizac, J. E., Monhemius, A. J., Eds.; Ellis Horwood: Chichester, 1986;p 730.
17. Onazaki, A.; Kuramochi, S. The Versatic acid process-a solution in the zinc industry. In Iron Control in Hydrometallurgy; Dutrizac, J. E., Monhemius, A. J., Eds.; Ellis Horwood: Chichester, 1986; p 297.
18. Steintveit, G. Treatment of zinc leach plant residue by the jarosite process. In Advances in Extractive Metallurgy and Refining; IMM: London, 1971; p 521.
19. Haigh, C.; Wood, J. Jarosite process boosts zinc. World Miner.1972, (Sept), 34.
20. Arregi, V.; Gordon, V.; Steintveit, A. R. The jarosite process-past, present and future. In Lead-Zinc-Tin'80, TMS-AIME World Symposium on Metallurgy and Environment Control, Las Vegas, NV, February 24-28, 1980; Cigan, J. M., Mackey, T. S., O'Keefe, T. J., Eds.; TMS-AIME:Warrendale, PA, 1980; p 97.
21. Scott, J. D.; Donyina, D. K. A.; Mouland, J. E. Iron-the good with the bad-Kidd Creek zinc plant experience. In Iron Control in Hydromet- allurgy; Dutrizac, J. E., Monhemius, A. J., Eds.; Ellis Horwood: Chichester, 1986; p 666.
22. Tamargo, F. J.; San, M.; Valcarcel, M. R. Asturiana de zinc: more than 30 years of experience with jarosite process. In Iron Control and Disposal; Dutrizac, J. E., Harris, G. B., Eds.; The Canadian Institute of Mining, Metallurgy and Petroleum: Montreal, Canada, 1996; pp 93-100.
23. Buban, K. R.; Collins, M. J.; Masters, I. M. Zinc and Iron Control: Overview Iron Control in Zinc Pressure Leach Processes. J. Met. 1999, 51 (12), 23.
24. Berg, D.; Borve, K. The disposal of iron residue at Norzink and its impact on the environment. In Iron Control and Disposal; Dutrizac, J. E., Harris, G. B., Eds.; The Canadian Institute of Mining, Metallurgy and Petroleum: Montreal Canada, 1996; p 627.
25. Garcia, A.; Valdez. Jarosite disposal practices at the Penoles zinc plant. In Iron Control and Disposal; Dutrizac, J. E., Harris, G. B., Eds.; The Canadian Institute of Mining, Metallurgy and Petroleum, Montreal: Canada, 1996; p 643.
26. Welham, N. J.; Malatt, K. A.; Vukcevic, S. The stability of iron phases presently used for disposal from Metallurgical systems- A Review. Miner. Eng. 2000, 13 (8-9), 911.
27. Galan, B.; Urtiaga, A. M.; Alonso, A. I.; Irabien, A.; Ortiz, M. I. Extraction of anions with Aliquat 336: chemical equilibrium modeling. Ind. Eng. Chem. Res. 1994, 22, 1765.
28. Ortiz, I.; Roman, M. F. San, Analysis of the back-extraction of cadmium-nickel-D2EHPA organic phases. Sep. Sci. Technol. 2002, 37 (3), 607.
29. Urtiaga, A.; AbeMn, M. J.; Irabien, J. A.; Ortiz, I. Membrane contactors for the recovery of metallic compounds. modelling of copper recovery from WPO processes. J. Membr. Sci. 2005, 257 (1-2), 161.
30. Dimitrov, K.; Alexandrova, S.; Sabomi, A.; Debay, E.; Boyadzhiev, L. Recovery of zinc from chloride media by batch pertraction in a rotating film contactor. J. Membr. Sci. 2002, 207, 119.
31. Alonso, A. I.; Galan, B.; Irabien, A.; Ortiz, I. Separation of Cr(VI) with Aliquat 336: Chemical equilibrium modeling. Sep. Sci. Technnol 1997, 32 (9), 1543.
32. Galan, B.; Roman, F.; San; Irabien, A.; Ortiz, I. Viability of the Separation of Cd from highly concentrated Ni-Cd mixtures by non dispersive solvent extraction. Chem. Eng. J. 1998, 70, 237.
33. Kerney, U. Treatment of spent pickling acids from hot-dip galvanizing. Res. Conserv. Recycl. 1994, 10, 145.
34. Kerney, U. New recycling technologies for Fe/Zn waste acids from hot dip galvanizing. In Edited Proceedings: 17th International Galvanizing Conference, Paris, France; European General Galvanizers Association (EGGA), 1994; pp GE2/1-3.
35. Kerney, U. Treatment of zinc-containing spent pickle acids. In Edited Proceedings of the 18th International Galvanizing Conference, Birmingham, U.K., June 8-11, 1997; European General Galvanizers Association (EGGA), 1997.
36. Niemczewska, J.; Cierpiszewski, R.; Szymanowski, J. Mass transfer of zinc(II) extraction from hydrochloric acid solution in the Lewis cell. Desalination 2004, 162, 169.
37. Samaniego, H.; San Romn, M. F.; Ortiz, I. Modelling of the Extraction and Back-Extraction Equilibria of Zinc from Spent Pickling Solutions. Sep. Sci. Technol. 2006, 41 (4), 757.
38. Regel-Rosocka, M.; Miesiac, I.; Sastre, A. M.; Szymanowski, J. Screening of Reagents for Recovery of Zinc(II) from Hydrochloric Acid Spent Pickling Solutions. Proceedings of ISEC'2002, Cape Town, South Africa, March 17-21, 2002; Chris van Rensburg Publication Ltd.: Cape Town, South Africa, 2002; Vol. 2, p 768-773.
39. Regel-Rosocka, M.; Zawistowski, P.; Sastre, A. M.; Szymanowski, J. Selection of Extractants for Dispersive Extraction of Zinc(II) from Hydrochloric Acid Solutions. Pol. J. Appl. Chem. 2003, 47, 83.
40. Rozenblat, M.; Regel-Rosocka, M.; Szymanowski, J. Metal removal from spent pickling solutions of high zinc(II) concentration. Physicochem. Probl. Miner. Process. 2004, 38, 121.
41. Regel-Rosocka, M.; Szymanowski, J. Iron(II) Transfer to the Organic Phase During Zinc(II) Extraction from Spent Pickling Solutions with tributyl phosphate, Institute of Chemical Technology and Engineering, Poznan University of Technology, Poznan, Poland. Solvent Extr. Ion Exch. 2005, 23, 411.
42. Garcia, F. J.; Rubia, A.; Sainz, E.; Gonzalez, P.; Lopez, F. A. Preliminary study of treatment of sulphuric pickling water waste from steelmaking by bio-oxidation with Thiobacillus ferrooxidans. FEMS Microbial. Rev. 1994, 14 (4), 397.
43. Lopez-Delgado; Lopez, F. A. Thermal-decomposition of ferric and ammonium sulfates Obtained by bio-oxidation of Water Pickling Liquors with Thiobacillus-Ferrooxidans. J. Mater. Sci. 1995, 30 (20), 5130.
44. Lopez-Delgado; Alguacil, F. J.; Lopez, F. A. Recovery of iron from bio-oxidized sulphuric pickling waste water by precipitation as basic sulphates. Hydrometallurgy 1997, 45 (1-2), 97.
45. Nyavor, K.; Egiebor, N. O.; Fedorak, P. M. The effect of ferric ion on the rate of ferrous oxidation by Thiobacillus ferrooxidans. Appl. Microbiol. Biotechnol. 1996, 45 (5), 688.
46. Nowaczyk, K.; Juszezak, A.; Domka, F. Microbiological oxidation of the waste ferrous sulphate. Polish J. Environ. Stud. 1999, 8 (6), 409.
47. Osaki, S. Kinetic Studies of Ferrous Ion Oxidation with Crystalline Human Ferroxidase (Ceruloplasmin). J. Biol. Chem. 1966, 241 (21), 5053.
48. Barnes, M. D.; Sapsford, D.; Williams, K. IMWA symposium 2007, Caliani, Italy,Mar 27-31, 2007; Cidu, R., Frau, F., Eds.
49. Millero, F. The effect of ionic interactions on the oxidation of metals in natural waters. Geochim. Cosmochim. Acta 1985, 49, 547.
50. Wehrli, B. Redox reactions of metal ions at mineral surfaces. In Aquatic chemical kinetics; Stumm, W., Ed.; John Wiley and Sons:Chichester, 1990.
51. Tamura, H.; Kawamura, S.; Hagayama, M. Acceleration of the oxidation of Fe2+ ions by Fe(III)-oxyhydroxides. Corros. Sci. 1980, 20, 963.
52. Sung, W.; Morgan, J. J. Kinetics and Products of Ferrous Iron Oxygenation in Aqueous Systems. Environ. Sci. Technol. 1980, 14, 561.
53. Tufekehi, N.; Sarikaya, H. Z. Catalytic effects of high Fe(III) concentrations on Fe(II) oxidation. Water Sci. Technol. 1996, 34, 389.
54. 2. Environ. Sci. Technol. 2005, 39, 6494.
55. Zhang, Y.; Charlet, L.; Schindler, P. W. Adsorption of protons, Fe(II) and Al(III) on lepidocrocite. Colloids Surf. 1992, 63, 259.
56. Subramanian, K. N.; Samson, P. Oxidation of Ferrous. Sulfate by Ozone. Phys. Chem. Process Metall., Richardson Conf. 1974, 49.
57. Nawlakhe, W. G.; Nanoti, M. V.; Bulusi, K. R. Conversion of ferrous to ferric iron for its effective use as coagulant. Indian J. Environ. Health 1988, 30 (2), 142.
58. Allal, K. M.; Ouchefoun, M.; Boumahrez, M. Oxidation of iron(II) sulphate to iron(III) sulphate and use in water treatment. J. Chem. Technol. Biotechnol. 1996, 66, 398.
59. Belaustegi, Y.; Olazabal, M. A.; Madariaga, J. M. Development of a Modified Bromley's Methodology for the estimation of ionic media effects on solution equilibria - Part 4. The chemical model of Fe(III) with the halide ligands in aqueous solution at 25°C. Fluid phase Equilib. 1999, 155, 21.
60. Deep, A.; Paulo, F. M.; Jorge, M. R. C. Selective recoveries of Fe(III) and Cr(III) from a tannery filtrate using Cyanex 923. Anal. Chem. Acta 2006, 558 (1-2), 254.
61. Maranon, E.; Fernandez, Y.; Suarez, F. J.; Alonso, F. J.; Sastre, H. Treatment of acid pickling baths by means of anionic resins. Ind. Eng. Chem. Res. 2000, 39, 3370.
62. Stocks, J.; Guy, S. Minimization and recycling of spent acid wastes from galvanizing plants. Resour., Conserv. Recycl. 2005, 44, 153.
63. Dingman, J.; Siggia, S.; Barton, C.; Hiscock, K. B. Concentration and separation of trace metal cations by complexation on polyamine- polyurea resins. Anal. Chem. 1972, 44, 1351.
64. Kabay, N.; Demircioglu, M.; Ekinci, H.; Yuksel, M.; Saglam, M.; Akcay, M.; Streat, M. Removal of metal pollutants (Cd(II) and Cr(III)) from phosphoric acid solutions by chelating resins containing phosphoric and diphosphoric groups. Ind. Eng. Chem. Res. 1998, 37 (6), 2541.
65. Riveros, P. A. The extraction of Fe(III) using cation-exchange carboxylic resins. Hydrometallurgy 2004, 72, 279.
66. Lee, M. S.; Nicol, M. J. Removal of iron from cobalt sulfate solutions by ion exchange with Diphonix resin and enhancement of iron elution with titanium(III). Hydrometallurgy 2007, 86,6.
67. Demopoulos, G. P.; Pouskouleli, G. Solvent extraction of iron(III) from acid sulphate solutions by mono (2-ethylhexyl) phosphoric acid. Can. Metall. Quart. 1989, 28 (1), 13.
68. Demopoulos, G. P.; Mihaylov, I. O.; Pouskouleli, G. Synergistic Extraction of Iron(III) from Sulphuric Acid Solutions with Mixed Kelex 100-Alkyl Phosphorus Acid Extract ants. Solvent Extr. Ion Exch. 1993, 11, 67.
69. Fortes, M. C. B.; Benedetto, J. S. Separation of indium and iron by solvent extraction. Miner. Eng. 1998, 11, 447.
70. Lupi, C.; Pilone, D. Reductive stripping in vacuum of Fe(III) from D2EHPA. Hydrometallurgy 2000, 57, 201.
71. Principe, F. T.; Demopoulos, G. P. The solubility and stability of organophosphoric acid extractants in H2SO4 and HCl media. Hydrometal- lurgy 2003, 68, 115.
72. Suarez, C.; Ahumada, E.; Orellana, F.; Hein, H.; Cote, G.; Lizama, H. Extraction of iron(III) from acidic sulfate solutions with bis(2- ethylhexyl)phosphoric acid in PENRECO 170 ES, a new friendly diluents. J. Chem. Technol. Biotechnol. 2002, 77, 183.
73. Principe, F. T.; Demopoulos, G. P. Comparative study of iron(III) separation from zinc sulphate-sulphuric acid solutions using the organo- phosphorus extractants, OPAP and D2EHPA: Part I: Extraction. Hydro-metallurgy 2004, 74, 93.
74. Principe, F. T.; Demopoulos, G. P. The separation and concentration of iron from zinc process solutions, JOM-J. Miner. Met. Mater. Soc. 1999, 51, 34.
75. Principe, F. T.; Demopoulos, G. P. Comparative study of iron(III) separation from zinc sulphate-sulphuric acid solutions using organophos- phorus extractants, OPAP and D2EHPA: Part II. Stripping. Hydrometallurgy 2005, 79, 97.
76. Majima, H.; Izaki, T.; Sanuki, S. Reductive stripping of Fe(III)- loaded D2EHPA with the aqueous solutions containing sulfur dioxide. Met. Trans. 1985, 16B, 187.
77. Sun, S.; Sixiu, L.; Yonghui, Y.; Jinglan, S. Effects of diluent polarity on the extraction kinetics I: extraction of Fe(III) by HEHEHP. Acta Chim. Sin. 1996, 54 (11), 1101.
78. Sato, T.; Nakamura, T.; Ikeno, M. The extraction of iron(III) from aqueous acid solutions by di(2ethylhexyl)phosphoric acid. Hydrometallurgy 1985, 15, 209.
79. Gao, Z. L.; Wang, D. J,; Yang, Y. H.; Sun, S. X. Extraction Kinetics of iron(III) by 2-ethylhexyl phosphonic acid mono 2-ethylhexyl ester. Acta Chim. Sin. 1994, 52, 373.
80. Deep, A.; Correia, P. F. M.; Carvalho, J. M. R. Separation and Recovery of Fe(III) and Cr(III) from a Tannery Filtrate Using Cyanex 272. Ind. Ens. Chem. Res. 2006, 45 (9), 3200.
81. Flett, S. J. New reagents or new ways with old reagents. Chem. Technol. Biotechnol. 1999, 74, 99.
82. 3+. Ind. Eng. Chem. Res. 2007, 46, 5707.
83. Biswas, R. K.; Habib, M. A.; Karmakar, A. K. Kinetics of Solvent Extraction of Iron(III) from Sulfate Medium by Purified Cyanex 272 using a Lewis Cell. Solvent Extr. Ion Exch. 2007, 25, 79.
84. Biswas, R. K.; Singha, H. P. Purified Cyanex 272: Its interfacial adsorption and extraction characteristics towards iron(III). Hydrometallurgy 2006, 82, 63.
85. Luo, F.; Li, D. Q.; Wu, Y. L. Extraction and Separation of Cadmium(II), Iron(III), Zinc(II), and Europium(III) by Cyanex302 Solutions Using Hollow Fiber Membrane Modules. Solvent Extr. Ion Exch. 2004, 22, 105.
86. Naik, M. T.; Dhadke, P. M. Extraction of iron(III) with bis(2-ethylhexyl)phosphinic acid and bis(2-ethylhexyl)phosphoric acid: Experimental equilibrium study. J. Chem. Eng. Data 1999, 44, 1037.
87. Senapati, D.; Chaudhury, G. R.; Sarma, P. V. R. B. Purification of nickel sulphate solutions containing iron, copper, cobalt, zinc and manganese. J. Chem. Technol. Biotechnol. 1994, 59, 335.
88. Nagaosa, Y.; Binghua, Y. Extraction equilibria of some transition. metal ions by bis(2-ethylhexyl)phosphonic acid. Talanta 1997, 44, 327.
89. Ajgaonkar, H. S.; Dhadke, P. M. Solvent extraction separation of iron(III) and aluminium(III) from other elements with Cyanex 302. Talanta 1997, 44, 563.
90. Muhl, P.; Gloe, K.; Fishcher, C.; Ziegenbalg, S.; Hoffmann, H. The application of liquid-liquid extraction for the separation of iron during the production of alumina. Hydrometallury 1980, 5, 161.
91. van der Zeeuw, J. Metals extraction with carboxylic acids. I. Composition of complexes with nickel, cobalt(II) and iron(III). Hydromet-allurgy, 1979, 4, 21.
92. van der Zeeuw, J. Metals extraction with carboxylic acids. II. Effect of temperature on the extraction of Cu, Ni, Co(II), Zn, Fe(III) and Co(III).Hydrometallurgy 1979, 4, 39.
93. Doyle, F. M. The physical chemistry of the precipitation stripping process for removing iron(III) from carboxylate solutions with dilute Sulphuric Acid. Hydrometallurgy 1988, 20, 65.
94. Fletcher, A. W.; Flett, D. S.; Wilson, J. C. Solvent extraction of ferric ion by a carboxilic acid. Bull. Inst. Miner. Metall. 1964, 693 (8), 765-777.
95. Rice, N. M. Recent developments and potential uses for carboxylic extractants-A review. Hydrometallurgy 1978, 3, 111-133.
96. Pouillon, D.; Doyle, F. M. Solvent Extraction of Metals with Carboxylic Acids-Theoretical Analysis of Extraction Behaviour. Hydro-metallurgy 1988, 19, 269-288.
97. Wang, X.; Kang, X.; Xie, H.; Lu, L. Studies of heterogeneous hydrothermal stripping from iron-loaded naphthenic acid-alcohol-kerosene. Chin. J. Process Eng. 2003, 3 (2), 109.
98. Xue, S. S.; Gula, M. J.; Horwitz, E. P. Solvent extraction of iron(III) from acid sulfate solution with Eichrom's Dipex extractant. SME Trans. 2000, 308,6.
99. Muhl, P.; Gloe, K.; Saradshow, M.; Gindin, L. M.; Kholkin, A. I.;Ivanova, S. N. The preparation of high purity iron compounds by solvent extraction with aliphatic monocarboxylic acids. Hydrometallurgy 1975, 1 (2), 113-121.
100. Preston, J. S.; Du Preez, A. C. Synergistic effects in the solvent extraction of some divalent metals by mixtures of versatic 10 acid and pyridinecarboxylate esters. J. Chem. Technol. Biotechnol. 2004, 61 (2), 159.
101. Doyle-Garner, F. M.; Monhemius, A. J. The hydrolytic stripping of Versatic acid solutions containing iron and other metals. Miner. Metall. Process. 1985, 2, 47.
102. Doyle-Garner, F. M.; Monhemius, A. J. Mixed iron-nickel complexes in Versatic 10 solutions. Hydrometallurgy 1985, 13, 317.
103. Doyle, F. M.; Pouillon, D.; Villegas, E. A. Solvent extraction of metals with carboxylic acids -coextraction of base metals with Fe(III) and characterization of selected carboxylate complexes. Hydrometallurgy 1988, 19, 289.
104. Doyle, F. M. The physical chemistry of the precipitation stripping process for removing iron(III) from carboxylate solutions with dilute sulphuric acid. Hydrometallurgy 1988, 20, 65.
105. 65Ni radionuclides for the study of solvent effects on the extraction equilibria with n-caprylic acid. Radioanal. Chem. 1976, 30, 383.
106. Seeley, F. G.; Crouse, D. J. Extraction of Metals from Nitrate and Sulfate. Solutions by Amines. J. Chem. Eng. Data 1971, 16 (4), 393.
107. 4 vs primene JM-T sulfate-toluene. J. In- org. Nucl. Chem. 1981, 43 (2), 375.
108. Cattrall, R. W.; West, B. O. The extraction of iron(III) from aqueous sulphate solutions by di(3,5,5-trimethylhexyl)amine-I: The nature of the extracted species. J. Inorg. Nucl. Chem. 1966, 28, 3035.
109. Cattrall, R. W.; Peverill, K. I. The extraction of iron(III) from aqueous sulphate solution by the primary amines 3,5,5-triethylhexylamine and n-dodecylamine. J. Inorg. Nucl. Chem. 1970, 32, 663.
110. Good, M. L.; Bryan, S. E.; Juge, F. Extraction of Group VIII Metals by Long-Chain Alkyl Amines. IV. Studies on the Extraction of Iron(II), Iron(III), Cobalt(II), Cobalt(III), and Nickel(II) from Aqueous Sulfate Media. Inorg. Chem. 1963, 2, 963.
111. Alguacil, F. J.; Amer, S. The extraction of iron(III) from aqueous sulphate solutions by primene sulphate. Hydrometallurgy 1986, 15, 337.
112. Coleman, C. F.; Brown, K. B.; Moore, J. G.; Allen, K. A. Amine Salts as Solvent Extraction Reagents for Uranium and other Metals. In Proceedings of the 2nd United Nations Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, September 1-13, 1958; p 278.
113. Schultze, L. E.; Eisele, J. A.; Marimoto, M. T.; Bauer, D. J. Extracting Iron from an Aluminum Sulfate Leach Solution; Rep. Invest.,No. 8353, U.S. Bureau of Minerals, 1979.
114. Abbruzzese, C. In Proceedings of the International Solvent Extraction Conference ISEC'83, Denver, CO, 1983; p 472.
115. Alguacil, F. J.; Amer, S.; Luis, A. The influence of the diluent on the extraction of iron(III) from aluminium sulphate solutions by the amine primene 81R sulphate. Hydrometallurgy 1987, 18, 65-73.
116. Alguacil, F. J.; Amer, S.; Luis, A. The influence of the diluent on the extraction of iron(III) from aluminium sulphate solutions by the amine primene 81R sulphate. Hydrometallurgy 1987, 18, 65.
117. Mitani, T.; Yokoi, H. Characterization ofthe complexes ofIron(III) with L-tartrate in the solvent extraction system - formation of Iron(III)- cluster complexes. Nippon Kagaku Kaishi 1993, 1052.
118. Deep, A.; Correia, P. F. M.; Carvalho, J. M. R. Selective recoveries of Fe(III) and Cr(III) from a tannery filtrate using Cyanex 923. Anal.Chim. Acta 2006, 558, 254.
119. Sarangi, K.; Parhi, P. K.; Padhan, E.; Palai, A. K.; Nathsarma, K. C.; Park, K. H. Separation of iron(III), copper(II) and zinc(II) from a mixed sulphate/chloride solution using TBP, LIX 84I and Cyanex 923. Sep. Purif. Technol. 2007, 55, 44.
120. Samaniego, H.; San Roman, M. F.; Ortiz, I. Kinetics of Zinc Recovery from Spent Pickling Effluents. Ind. Eng. Chem. Res. 2007, 46, 907.
121. Simpson, J.; Navarro, P.; Alguacil, F. J. Iron(II) extraction by LIX 860 and its influence on copper(II) extraction from sulphuric solutions. Hydrometallurgy 1996, 42, 13.
122. Demopoulos, P.; Mihaylov, I. O.; Pouskouleli, G. Synergistic Extraction of Iron(III) from Sulphuric Acid Solutions with Mixed Kelex 100-Alkyl Phosphorus Acid Extract ants. Solvent Extr. Ion Exch. 1993, 11, 67.
123. Meng, M. X.; Yu, S. Q.; Chen, J. Y. Kinetics of iron(III) extraction with primary amine and TBP using a modified rotating diffusion cell. Hydrometallurgy 1996, 41, 55.
124. Demopoulos, P.; Gefvert, D. L. Iron(III) removal from base-metal electrolyte solutions by solvent extraction. Hydrometallurgy 1984, 12, 299.
125. Kolarik, Z. Solvent Extraction Reviews; Marcel Dekker: New York, 1971; Vol. 1, pp 1-60.
126. Hsu, K.-H. Principle ofSolvent Extraction Chemistry; Science and Technology Press: Shanghai, 1984; p 155.
127. Yu, S.; Chen, J.; Chen, C. Y. Synergistic extraction of ferric iron in sulfate solutions by tertiary amine and 2-ethylhexyl 2-ethylhexylphos- phonic acid (HEHEHP) or dialkylphosphonic acid. Hydrometallurgy 1989, 22, 183.
128. Chen, J. (C.-y.) ; Yu, S.; Liu, H.; Meng, X.; Wu, Z. New mixed solvent systems for the extraction and separation of ferric iron in sulphate solutions. Hydrometallurgy 1992, 30, 401.
129. Yu S.; Chen J. In Proceedings of the First International Conference on Hydrometallurgy, Beijing, China; Zheng, Y., Xu, J., Eds.; Academic press: New York, 1988; p 185.
130. Yu, S.; Chen, J. Synergistic extraction of ferric iron in sulphate solutions by tertiary amine and 2-ethylhexyl 2ethyl-hexyl-phosphonic acid (HEHEHP) or dialkylphosphonic acid. Hydrometallurgy 1989, 22, 183.
131. 3+ from chloride solution by D2EHPA in kerosene. Hydrometallurgy 1998, 50, 153.
132. Principe, F.; Demopoulos, G. P. The solubility and stability of organophosphoric acid extractants in H2SO4 and HCl media. Hydrometal- lurgy 2003, 68, 115.
133. Sato, T.; Nakamura, T.; Ikeno, M. The extraction of iron(III) from aqueous acid solutions by Di(2-ethylhexyl)phosphoric acid. Hydrometallurgy 1999, 15, 209.
134. Didi, M. A.; Elias, A.; Villemin, D. Effect of chain length of alkane-1-hydroxy-1,1'-methyldiphosphonic acids on the iron(III) liquid- liquid extraction. Solvent Extr. Ion Exch. 2002, 20, 505.
135. Lee, M. S.; Lee, K. J. Separation of iron and nickel from a spent FeCl3 etching solution by solvent extraction. Hydrometallurgy 2005, 80, 163.
136. Saji, J.; Rao, T. P.; Iyer, C. S. P.; Reddy, M. L. P. Extraction of iron(III) from acidic chloride solutions by Cyanex 923. Hydrometallurgy 1998, 49, 289.
137. Remya, P. N.; Reddy, M. L. P. Solvent extraction separation of titanium(IV), vanadium(V) and iron(III) from simulated waste chloride liquors of titanium minerals processing industry by the trialkylphosphine oxide Cyanex 923. J. Chem. Technol. Biotechnol. 2004, 79, 734.
138. Preston, J. S.; du Preez, A. C. Synergistic effects in the solvent extraction of some divalent metals by mixtures of versatic 10 acid and pyridinecarboxylate esters. J. Chem. Technol. Biotechnol. 2004, 61 (2), 159.
139. Muhl, P.; Gloe, K.; Saradshow, M.; Gindin, L. M.; Kholkin, A. I.; Ivanova, S. N. The preparation of high purity iron compounds by solvent extraction with aliphatic monocarboxylic acids. Hydrometallurgy 1975, 1 (2), 113.
140. Gindin L. M.; et al. Izv. Sib. Otdel. Akad. NaukSSSR, Ser. Khim. Nauk 1967, (3), 95.
141. 65Ni radionuclides for the study of solvent effects on the extraction equilibria with n-caprylic acid. J. Radioanal. Nucl. Chem. 1976, 30 (2), 383.
142. Nasu, A.; Takagi, H.; Ohmiya, Y.; Sekine, T. Solvent extraction of iron(II) and iron(III) as anionic thiocyanate complexes with tetrabuty- lammonium ions into chloroform. Anal. Sci. 1999, 15, 177.
143. Costa, M. C.; Carvalho, A.; Uryga, A.; Paiva, A. P. Solvent Extraction of ron(III) from Hydrochloric Acid Solutions Using N,N- Dimethyl-N,N-diphenyl- malonamide and N,N-Dimethyl-N,N-diphenyltet- radecylmalonamide. Solvent Extr. Ion Exch. 2003, 21, 653.
144. Lee, M. S.; Lee, K. J.; Oh, Y. J. Solvent extraction equilibria of FeCl3 from hydrochloric acid solution with Alamine 336. Mater. Trans. 2004, 45, 2364.
145. Coasta, M. C.; Martins, M.; Paiva, A. P. Solvent extraction of Fe(III) from acidic hloride medium using N,N'-dimethyl-N,N'dibutylmalonamide. Sep. Sci. Technol. 2004, 39, 3573.
146. Paiva, A. P.; Costa, M. C. Application of N,N'-trtrasubstituted malonamides to the recovery of iron(III) from chloride solutions. Hydro-metallurgy 2005, 77, 103.
147. 3 HCl media. Hydrometallurgy 2000, 57 (2), 151.
148. Rothe, J. W. The extraction of iron(III) from hydrochloric acid solution by ethyl ether. Chem. News 1892, 66, 182.
149. Specker, H.; Cremer, M. Z. Uber Eisen(III)-Verbindungen in Chloridhaltigen Verteilungssystemen. Anal. Chem. 1959, 167, 110.
150. Majumdar, S. K.; De, A. K. Liquid-liquid extraction of iron(III) with tributylphosphate: separation from mixtures. Talanta 1960, 7,1.
151. Thornhill, P. G.; Wigstol, E.; Van Weert, G. The Falconbridge matte leach process. JOM 1971, 23 (7), 13.
152. Ishimori, T.; Akatsu, E.; Kataoka, A.; Osakabe, T. Solvent Extraction Behavior of Macroamounts of Elements in 100% TBP-Nitric or Hydrochloric Acid Systems. J iNucl. Sci. iTechnoli (Tokyo) 1964, 1 (1), 18.
153. Sanad, W.; Flex, H.; Haggag, A. Kinetics of iron(III) chloride extraction with n-tributyl phosphate. J. Radioanal. Nucl. Chem. 1982, 75 (1-2), 121.
154. Hirato, T.; Wu, Z.; Yamada, Y.; Majima, H. Improvement ofthe stripping characterstics of Fe(III) utilizing a mixture of di-2-ethylhexy- lphophoric acid and tri-n-butyl phosphate. Hydrometallurgy 1992, 28, 81.
155. Meng, M. X.; Shuqiu, Y.; Jiayong, y. C. Kinetics of iron(III) extraction with primary amine and TBP using a modified rotating diffusion cell. Hydrometallurgy 1996, 41 (1), 55.
156. Haggag, A.; Sanad, W.; Alian, A.; Tadroes, N. Extraction studies on iron. J. Radioanal. Chem. 1977, 35 (2), 253.
157. Song, S.; Mimiura, K.; Isshiki, M. Preparation of High Purity Iron by Solvent Extraction. J. Jpn. Inst. Met. 1999, 63 (6), 753-759.
158. Iofa, B. Z.; Kropotov, V A,. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 1976, 19 (3), 359.
159. Yamamura, T.; Omote, Y.; Sata, S.; Hiyama, T. Process for recovering pure aqueous solution of ferric chloride and aqueous solution of metal chlorides free of ferric chloride, U.S. Patent 3,622,269, 1971.
160. Chiba, A.; Kimura, O. In Proceedings ofthe 5th International Conference On Ferrites (ICF-5), Bombay, India, Jan 10-13; Srivastava, C. M., Patni, M. J., Eds,; Oxford and IBH Publishing: New Delhi, 1989; Vol. 1, p 35.
161. Vasudeva Rao, P. R.; Damodaran, R.; Srinivasan, T. G.; Matthews, C. K. The effect of diluents on third phase formation in thorium nitrate TBP system: some novel empirical correlations. Solvent Extr. Ion Exch. 1993, 11 (4), 645.
162. Reddy, B. R.; Bhaskara Sarma, P. V. R. B. Extraction of iron(III) at macro-level concentrations using TBP, MIBK and their mixtures. Hydrometallurgy 1996, 43, 299.
163. Thomas, G. D.; Surender; Reddy, M. L. P. Preparation of Hematite Powders with Plate-Like Morphology from Titania Wastes by Solvent Extraction Followed by Precipitation Stripping and Hydrothermal Synthesis.Sep. Sci. Technol. 2005, 39 (7), 1695.
164. Pospiech, B.; Walkowiak, W.; Wozniak, M. J. Application of TBP in selective removal of Fe(III) in solvent extraction and transport through polymer inclusion membranes process. Physicochem. Probl. Miner. Process. 2005, 39, 89.
165. Saji, J.; Rao, T. P.; Ramamohan, T. R.; Reddy, M. L. P. Studies on the liquid-liquid extraction of iron(III) and titanium(IV) with 3-phenyl- 4-benzoyl-5-isoxazolone. Talanta 1999, 50, 1065.
166. Remya, P. N.; Pavithran, R.; Reddy, M. L. P. 3-Phenyl-4-acyl- 5-isoxazolones as Reagents for the Solvent Extraction Separation of Titanium(IV) and Iron(III) from Multivalent Metal Chloride Solutions. Solvent Extr. Ion Exch. 2004, 22, 473.
167. Regel-Rosocka, M.; Szymanowski, J. Iron(II) Transfer to the Organic Phase During Zinc(II) Extraction from Spent Pickling Solutions with Tributyl Phosphate. Solvent Extr. Ion Exch. 2005, 23, 411.
168. Grzeszczyk, A.; Regel-Rosocka, M. Extraction of zinc(II), iron(II) and iron(III) from chloride media with dibutylbutylphosphonate. Hydro- metallurgy 2007, 86, 72.
169. Rabah, M. A. Recovery of iron and copper from spent HCl used to clean up dirty car radiators. Hydrometallurgy 2000, 56, 75.
170. Hirato, T.; Wu, Z. C.; Yamada, Y.; Majima, H. Improvement of the stripping characteristics of Fe(III) utilizing a mixture of di (2-ethylhexyl) phosphoric acid and tri-n-butyl phosphate. Hydrometallurgy 1992, 28, 81.
171. Reddy, B. R.; Sarma, P. V. R. B. Extraction of iron(III) at macro- level concentrations using TBP, MIBK and their mixtures. Hydrometallurgy 1996, 43, 299.
172. Sandhibigraha, A.; Sarma, P. V. R. B.; Chakravorty, V. Solvent Extraction of Iron(III) from Aqueous Hydrochloric Acid Solutions Using D2EHPA. Scand. J. Metall. 1996, 25, 135.
173. Sahu, K. K.; Das, R. P. Synergistic Extraction of Iron(III) at Higher Concentrations in D2EHPA-TBP Mixed Solvent Systems. Metall. Mater. Trans. B-Proc. 1997, 28, 181.
174. Sahu, K. K.; Das, R. P. Synergistic Extraction of iron(III) at higher concentrations. in D2EHPA-TBP mixed solvent systems. Metall. Mater. Trans. B-Proc. 2000, 31, 1169.
175. Voshkin, A. A.; Belova, V. V.; Khol'kin, A. I. Extraction of Iron(III) by Binary Extractants Based on Quaternary Ammonium Bases and Organic Acids. Russ. J. Inorg. Chem. 2003, 48 (4), 608.
176. Reddy, M. L. P.; Saji, J. J. Recovery of High Purity Iron(III), Titanium(IV) and Vanadium(V) from Waste Chloride Liquors from the Titanium Minerals Processing Industry by Solvent Extraction. In Chloride Metallurgy: Proceedings of the 32nd Annual Hydrometallurgy Meeting and International Conference on Practice and Theory of Chloride/Metal Interaction, Montreal, Canada, October 19- 23, 2002; Peek, E. E., Van Weert, G. G., Eds.; METSOC: Montreal, Canada, 2002; Vol. II, p 513.
177. Reddy, B. R.; Sarma, P. V. R. B. Extraction of iron(III) at macro- level concentrations using TBP, MIBK and their mixtures. Hydrometallurgy 1996, 43, 299.
178. Imura, H.; Ishimori, K.; Ohashi, K. Highly effective extraction of iron(III) with 4-isopropyltropolone in nonpolar solvents containing 3,5 Dichlorophenol as a synergist. Anal. Sci. 2000, 16, 1297.
179. Yu, S.; Chen, J. Synergistic Extraction of ferric iron in sulphate solutions by tertiary amine and 2-ethylhexyl2-ethylhexylphosphonic acid (HEHEHP) or Dialkylphosphonic acid. Hydrometallurgy 1989, 22, 183.
180. Chang, C. C.; Chiu, T. M.; Hoh, Y. C.; Wang, W. K. Separation of iron from zirconium in concentrated hydrochloric acid solutions by solvent extraction. Hydrometallurgy 1986, 17,1.
181. Bartkowska, M.; Regel-Rosocka, M.; Szymanowski, J. Extraction of zinc(II), iron(III) and iron(II) with binary mixtures containing tributyl phosphate and di(2-ethylhexyl)phosphoric acid or Cyanex 302. Physicochem. Probl. Miner. Process. 2002, 36, 217.
182. Szymanowski, J. Hydroxyoximes in Copper Hydrometallurgy; CRC press: Boca Raton, 1993.
183. Merigold, C. R.; Agers, D. W.; House, J. E. Proceedings ofthe International Solvent Extraction Conference, ISEC' 71; The Hague Society of the Chemical Industry: London, 1971; Vol. 2, p 1351.
184. Flett, D. S. A survey of reagents used for solvent extraction. In Proceedings of the International Symposium on Solvent Extraction in Metallurgical Processes, Antuerpia, May Technologisch Institute: Antwerp, Belgium, 1972; p 22.
185. Kuhn, M. C.; Arbiter, N.; Kllng, H. Anaconda's Arbiter Process for Copper. CIM Bull. 1974, 67, 62-72.
186. Rotuska, K.; Chmielewski, T. Growing role of solvent extraction in copper ores processing. Physicochem. Problems Miner. Process. 2008, 42, 29-36.
187. Dasher, J.; Power, K. Copper solvent extraction process - from pilot study to full scale plant. Eng. Min., J. 1971, 172 (4), 111.
188. Calligaro, L.; Mantovani, A.; Belluco, U.; Acampora, M. Solvent extraction of copper(II), nickel(II), cobalt(II), zinc(II), and iron(Ill) by high molecular weight hydroxyoximes. Polyhedron 1983, 2 (11), 1189.
189. Amal, I. A.; Jacqueline, A. D.; Hisham, F. A. Recovery ofcopper from sulphate medium by Lix-84 in kerosene. J. Chem. Technol. Biotechnol. 1996, 67 (2), 137.
190. Yang, J. Development of copper extraction technology in China. In Proceedings ofthe International Solvent Extraction Conference, ISEC'93, York, U.K., September 9-15, 1993; Society of Chemical Industry. York, U.K., 1993; p 183.
191. Sandhibigraha, A.; Sarma, P. V. R. B. Co-extraction and selective stripping of copper and nickel using LIX87QN. Hydrometallurgy 1997, 45, 211.
192. Alguacil, F. J.; Alonso, M. J. Recovery of copper from ammo- niacal/ammonium sulfate medium by LIX 54. Chem. Technol. Biotechnol. 1999, 74, 1171.
193. Alguacil, F. J.; Cobo, A. Extraction ofzinc from ammoniacal/ammonium sulphate solutions by LIX 54. J. Chem. Technol. Biotechnol. 1998, 71, 162.
194. Alguacil, F. J.; Cobo, A. Solvent extraction with LIX 973N for the selective separation of copper and nickel. J. Chem. Technol. Biotechnol. 1999, 74, 467.
195. De San Miguel, E. R.; Augilar, J. C.; Bernal, J. P.; Ballinas, M. L.; Rodriguez, M. T. J.; Gyves de, J.; Schimmel, K. Extraction of Cu(II), Fe(III), Ga(III), Ni(II), In(III), Co(II), Zn(II) and Pb(II) with LIX 984 dissolved in n-heptane. Hydrometallurgy 1997, 47, 19.
196. Draa M. T. Benamor M. Extraction Equilibrium of Zn (II) and Ni (II) with LIX 984. In Proceedings ofthe International Solvent Extraction Conference, ISEC, Johannesburg, South Africa, Mar 17- 21; Sole, K. C., Cole, Preston, J. S., Robinson, D. J., Eds.; Chris Van Rensburg: South Africa, 2002; p 976.
197. Ying-Chu, H.; Nan-Ping, C.; Wel-ko, W. Chem. Process Des. Dev. 1982, 21, 12.
198. Price, M. J.; Reid, J. G. Separation and Recovery of Nickel and Cobalt in Ammoniacal Systems-Process Development. In Solvent Extraction in the Process Industries, Proceedings ofthe International Solvent Extraction Conference, ISEC, New York, Sept 9- 15; Logsdail, D. H., Slater, M. J., Eds.; Elsevier: New York, 1993; p 159.
199. Kumar, V.; Pandey, B. D.; Bagchi, D. Application of LIX 84 for separation of copper, nickel and cobalt in ammoniacal leaching of ocean nodules. Mater. Trans., JIM 1991, 32 (2), 157-163.
200. Kim, J. S.; Yi, J. Selective removal of copper ions from aqueous solutions using modified silica beads impregnated with LIX 84. J.Chem Technol. Biotechnol. 1999, 74, 544.
201. Parija, C.; Reddy, B. R.; Sarma, P. V. R. B. Recovery of nickel from solutions containing ammonium sulphate using LIX 84-I. Hydromet- allurgy 1998, 49, 255.
202. Parija, C.; Sarma, P. V. R. B. Separation of nickel and copper from ammoniacal solutions through co-extraction and selective stripping using LIX 84 as the extractant. Hydrometallurgy. 2000, 54, 195.
203. Alguacil, F. J.; Cobo, A. Solvent extraction with LIX 973N for the selective separation of copper and nickel. J. Chem. Technol. Biotechnol. 1999, 74 (5), 467.
204. Reddy, B. R.; Neela Priya, D. Flow-sheet for the separation of Cu(II), Ni(II) and Zn(II). Anal. Sci. 2004, 20, 1737.
205. Valdes Carlos, J.; Copper, W. C.; Bacon, D. W. Statistical modeling of solvent extraction equilibria: extraction of copper from sulfuric acid and ammoniacal solutions by mixtures of LIX 64N and SME 529. Metall. Trans. B 1983, 14 (2), 159.
206. Technical brochure; Allied Chemical Corporation, 1996.
207. Amores, M.; Coedo, A. G.; Alguacil, F. J. Extraction of copper from sulphate solutions by MOC 45: Application to Cu separation from leachates of a copper flue dust. Hydrometallurgy 1997, 47, 99.
208. Rao, K. S.; Devi, N. B.; Reddy, B. R. Solvent extraction of copper from sulphate medium using MOC 45 as extractant. Hydrometallurgy 2000, 57, 269.
209. Yao, B.; Nagaosa, Y.; Masatada, S.; Akihiko, N.; Kiyoshi, H. Solvent extraction of metal ions and separation of Ni(II) from other metal ions by organophosphorous acids. Solvent Extr. Ion Exch. 1996, 14 (5), 849.
210. Saito, K.; Murakami, S.; Muromatsu, A.; Sekido, E. Liquid-liquid extraction of. copper(II) with cyclic tetrathioethers. Anal. Chim. Acta 1994, 294, 329.
211. Elyahyaoui, A.; Bouhlassa, S. Extraction of cadmium and io- docadmat species by di(2-ethylhexyl) phosphoric acid from perchloric and phosphoric media. Appl. Radiat. Isot. 2001, 54 (6), 921.
212. Lee, M. S.; Ahn, J. G.; Lee, E. C. Solvent extraction separation of indium and gallium from sulphate solutions using D2EHPA. Hydromet- allurgy 2002, 63 (3), 269.
213. Kongolo, K.; Mwema, M. D.; Banza, A. N.; Gock, E. Cobalt and zinc recovery from copper sulphate solution by solvent extraction. Miner. Eng. 2003, 16 (12), 1371.
214. Cheng, Y. C. Purification of synthetic laterite leach solution by solvent extraction using D2EHPA. Hydrometallurgy 2000, 56, 369.
215. Szymanowski, J. Hydroxyoximes and Copper Hydrometallurgy;CRC Press: Boca Raton, FL, 1993.
216. Ihm, S. K.; Lee, H. Y.; Huilee, D. Kinetic study of the extraction of copper(ii) by di(2-ethylhexyl)phosphoric acid in a Lewis-type cell. J. Membr. Sci. 1988, 37, 181.
217. Ritcey, G. M.; Ashbrook, A. W. Trans. Inst. Min. Met. 1969, 78, C57.
218. Nagaosa, Y.; Nonome, N. Purification of Unrefined Nickel(II) Sulfate Solution by a Continuous Countercurrent Multistage Extraction with bis(2- Ethylhexyl)phosphinic Acid. J. Chem. Technol. Biotechnol. 1999, 69 (1), 114.
219. Preston, J. S. Solvent extraction of cobalt and nickel by organo- phosphorus acids I. Comparison of phosphoric, phosphonic and phosphonic acid systems. Hydrometallurgy 1982, 9, 115.
220. Devi, N. B.; Nathsarma, K. C.; Chakarvortty, V. Sodium salts of D2EHPA, PC 88A and Cyanex 272 and their mixtures as extractant for cobalt(II). Hydrometallurgy 1994, 34, 331.
221. Preston, J. S. Solvent extraction of base metals by mixtures of organo- phosphoric acids and non-chelating oximes. Hydrometallurgy 1983, 10, 187.
222. Thakur, N. V. Extraction studies of base metals (Mn, Cu, Co and Ni) using the extractant 2-ethylhexyl 2-ethylhexyl phosphonic acid, PC 88A. Hydrometallurgy 1998, 48, 125.
223. Thakur, N. V.; Mishra, S. L. Separation of Co, Ni and Cu by solvent extraction using di-(2-ethylhexyl) phosphonic acid, PC 88A. Hydrometallurgy 1998, 48, 277.
224. Belkhouche, N. E.; Didi, M. A. Didier Villemin. Separation of Nickel and Copper by Solvent Extraction Using Di-2 Ethylhexyl phosphoric Acid-Based Synergistic Mixture. Solvent Extr. Ion Exch. 2005, 23, 677.
225. Sarangi, K.; Parhi, P. K.; Padhan, E.; Palai, A. K.; Nathsarma, K. C.; Park, K. H. Separation of iron(III), copper(II) and zinc(II) from a mixed sulphate/chloride solution using TBP, LIX841 and cyanex 923. Sep. Purif. Technol. 2007, 55, 44.
226. Luo, F.; Li, D.; Wei, P. Synergistic extraction of zinc(II) an cadmium(II) with mixtures of primary amine N 1923 and neutral organo- phosphorous derivatives. Hydrometallurgy 2004, 73, 31.
227. Singh, H.; Mishra, S. L.; Vijayalakshmi, R. Uranium recovery from phosphoric acid by solvent extraction using a synergistic mixture of di-nonyl phenyl phosphoric acid and tri-n-butyl phosphate. Hydrometallurgy 2004, 73, 63.
228. Preston, J. S. Solvent extraction of cobalt and nickel by organo- phosphorous acids I. comparison of phosphoric, phosphonic and phosphinic acids systems. Hydrometallurgy 1982, 9, 115.
229. Groves, R. D.; Redden, L. D. Nickel extraction from acidic chloride solutions with aliphatic oximes. Hydrometallurgy 1990, 24 (3), 271.
230. Redden, L. D.; Groves, R. D. Extraction of nickel with aliphatic oximes. Sep. Sci. Technol. 1993, 28 (1-3), 201.
231. De Ketelaere, R. F. Selective recuperation ofnickel salts from industrial effluents; Final technical report of project BRPR-CT95-0016, Belgium, 2000.
232. Van de Voorde, I.; Pinoy, L; De Ketelaere, R. F. Recovery of nickel ions by supported liquid membrane (SLM) extraction. J. Membr. Sci. 2004, 234, 11.
233. Zhang, P.; Yokoyama, T.; Suzuki, T. M.; Inoue, K. The synergistic extraction of nickel and cobalt with a mixture of di(2-ethylhexyl) phosphoric acid and 5-dodecylsalicylaldoxime. Hydrometallurgy 2001, 61, 223.
234. Preston, J. S.; du Preez, A. C. The solvent extraction of nickel and cobalt bymixtures of carboxylic acids and pyridinecarboxylate esters. Solvent Extr. Ion Exch. 1995, 13 (3), 465.
235. Preston, J. S.; Du Preez, A. C. The solvent extraction of nickel from acidic solutions using synergistic mixtures containing pyridinecar- boxylate esters. Part 2: Systems based on alkylsalicylic acids. J. Chem. Technol. Biotechnol. 1996, 66, 293.
236. Gu, Z. M.; Wasan, D. T.; Li, N. N. Ligand-Accelerated Liquid Membrane. Extraction of Metal Ion. J. Membr. Sci. 1986, 26, 129.
237. Sarkar, S. G.; Dhadke, P. M. Extractive spectrophotometric determination of cobalt(II) using Cyanex reagent. Can. J. Anal. Sci. Spectrosc. 1999, 44 (3), 75.
238. Sole, K. C.; Hiskey, J. B. Solvent extraction characteristics of thio substituted organophosphinic acid extractants. Hydrometallurgy 1992, 30, 345.
239. Nakashio, F.; Kondo, K.; Murakami, A.; Akiyoshi, Y. Extraction equilibria of copper and zinc with alkylphosphonic acid monoester. J. Chem. Eng. Jpn. 1982, 15 (4), 274.
240. Simonin, J.-P.; Hendrawan, H.; Dardoize, F.; Clodic, G. Study of salt effects on the kinetics of extraction of cobalt(II) and zinc(II) at trace level by D2EHPA in n-dodecane. Hydrometallurgy 2003, 69, 23.
241. Shibata, J.; Matsumoto, S.; Mamiya, S.; Kawahara, T.; Yamamoto, H. Solvent Extraction of copper from chloride solution for environmentally friendly copper hydrometallurgical process. Shigen-to-Sozai 1999, 115 (11), 837.