Articles

Separation and recovery of critical metal ions using ionic liquids

  • Terence Makanyire ,
  • Sergio Sanchez-Segado ,
  • Animesh Jha
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  • Institute for Materials Research, University of Leeds, Leeds LS2 9JT, UK

Received date: 2015-07-06

  Revised date: 2015-12-16

  Online published: 2016-03-02

Supported by

The authors acknowledge the financial supports from a consortium UK industry and the EPSRC standard grants (GR/T19889/01 and GR/L95977/01) and PhD studentships for research which was initiated in 1997 at the University of Leeds.

Abstract

Separation and purification of critical metal ions such as rare-earth elements (REEs), scandium and niobium from their minerals is difficult and often determines if extraction is economically and environmentally feasible. Solvent extraction is a commonly used metal-ion separation process, usually favored because of its simplicity, speed and wide scope, which is why it is often employed for separating trace metals from their minerals. However, the types of solvents widely used for the recovery of metal ions have adverse environmental impact. Alternatives to solvent extraction have been explored and advances in separation technologies have shown commercial establishment of liquid membranes as an alternative to conventional solvent extraction for the recovery of metals and other valuable materials. Liquid membrane transport incorporates solvent extraction and membrane separation in one continuously operating system. Both methods conventionally use solvents that are harmful to the environment, however, the introduction of ionic liquids (ILs) over the last decade is set to minimize the environmental impact of both solvent extraction and liquid membrane separation processes. ILs are a family of organic molten salts with low or negligible vapour pressure which may be formed below 100 ℃. Such liquids are also highly thermally stable and less toxic. Their ionic structure makes them thermodynamically favorable solvents for the extraction of metallic ions. The main aim of this article is to review the current achievements in the separation of REE, scandium, niobium and vanadium from their minerals, using ILs in either solvent extraction or liquid membrane processes. The mechanism of separation using ILs is discussed and the engineering constraints to their application are identified.

Cite this article

Terence Makanyire , Sergio Sanchez-Segado , Animesh Jha . Separation and recovery of critical metal ions using ionic liquids[J]. Advances in Manufacturing, 2016 , 4(1) : 33 -46 . DOI: 10.1007/s40436-015-0132-3

References

1. European Commission (2014) Critical raw materials for the EU. Available from http://ec.europa.eu/enterprise/policies/raw-mate rials/files/docs/report-b_en.pdf. Accessed 28 Sept 2014

2. Nuss P, Eckelman M (2014) Life cycle assessment of metals: a scientific synthesis. PLoS One 9(7):e101298

3. Koltun P, Tharumarajah A (2014) Life cycle impact of rareearth elements. ISRN Metall 2014:1-10

4. Massari S, Ruberti M (2013) Rare-earth elements as critical raw materials: focus on international markets and future strategies. Resour Policy 38(1):36-43

5. International Union of Pure and Applied Chemistry (IUPAC) (2005) Nomenclature of inorganic chemistry. RSC Publishing, Cambridge

6. Gupta C, Krishnamurthy N (2005) Extractive metallurgy of rareearths. CRC Press, Boca Raton

7. Jordens A, Cheng Y, Waters K (2013) A review of the beneficiation of rare earth element bearing minerals. Miner Eng 41:97-114

8. Habashi F (1997) Handbook of extractive metallurgy. Wiley-VCH, Weinheim

9. Wang W, Pranolo Y, Cheng C (2011) Metallurgical processes for scandium recovery from various resources: a review. Hydrometallurgy 108(1-2):100-108

10. Wagh A, Pinnock W (1987) Occurrence of scandium and rareearth elements in Jamaican bauxite waste. Econ Geol 82(3):757-761

11. Ochsenkühn-Petropulu M, Lyberopulu T, Parissakis G (1994) Direct determination of lanthanides, yttrium and scandium in bauxites and red mud from alumina production. Anal Chim Acta 296(3):305-313

12. International Lead and Zinc Study Group, International Nickel Study Group and International Copper Study Group (2013) Study of by-products of copper, lead, zinc and nicke. Available from https://connect.innovateuk.org/documents/2865354/3895467/Study?of?By-Products?of?Copper,%20Lead,%20Nickel ?%26?Zinc/2703f24f-14c6-4038-abb4-fb4f215327c6. Accessed 27 Apr 2015

13. United Nations Environment Programme (UNEP) International Resource Panel (2011) Recycling rates of metals: a status report

14. Binnemans K, Jones P, Blanpain B et al (2013) Recycling of rare-earths: a critical review. J Clean Prod 51:1-22

15. Pohl W (2011) Economic geology. Wiley-Blackwell, Chichester

16. Siirama L (2009) The Sokli mine project. Fennoskandian mining and exploration congress. Fennoskandian Mining and Exploration Congress, Rovaniemi

17. Zelikman A, Kreïn O, Samsonov G (1966) Metallurgy of rare metals: metallurgiva redkikh metallov. Jerusalem: Israel program for scientific translations. Available from the U S Dept. of Commerce, Clearinghouse for Federal Scientific and Technical Information, Springfield

18. British Geological Survey (BGS) (2011) Mineral profile: niobium- tantalum. British Geological Survey, Nottingham

19. US Geological Survey (USGS) (2014) Mineral commodity summaries 2014: US Geological Survey, p 196

20. Dewhurst P (2013) Molybdenum and vanadium: key metals in titanium alloys. Roskill consulting group Ltd

21. US Geological Survey (2013) Mineral commodity summaries 2013: US Geological Survey, 198 p

22. Rydberg J (2004) Solvent extraction principles and practice. M. Dekker, New York

23. Wellens S (2014) Ionic liquid technology in metal refining: dissolution of metal oxides and separation by solvent extraction. Dissertation, KU Leuven Belgium

24. Izgorodina E, Bernard U, Dean P et al (2009) The madelung constant of organic salts. Cryst Growth Des 9(11):4834-4839

25. Laus G, Bentivoglio G, Schottenberger H et al (2005) Ionic liquids: current developments, potential and drawbacks for industrial applications. Lenzinger Berichte 84:71-85

26. Tian G, Li J, Hua Y (2010) Application of ionic liquids in hydrometallurgy of nonferrous metals. Trans Nonferr Metals Soc China 20(3):513-520

27. Regel-Rosocka M, Wisniewski M (2011) Ionic liquids in separation of metal ions from aqueous solutions. In: Handy S (ed) Applications of ionic liquids in science and technology. InTech, pp 375-398

28. Pham TPT, Cho CW, Yun YS (2010) Environmental fate and toxicity of ionic liquids: a review. Water Res 44(2):352-372

29. Ventura SPM, Marques CS, Rosatella AA et al (2012) Toxicity assessment of various ionic liquid families towards Vibrio fischeri marine bacteria. Ecotoxicol Environ Saf 76(2): 162-168

30. Xie F, Zhang TA, Dreisinger D et al (2014) A critical review on solvent extraction of rare earths from aqueous solutions. Miner Eng 56(2):10-28

31. Shimojo K, Kurahashi K, Naganawa H (2008) Extraction behavior of lanthanides using a diglycolamide derivative TODGA in ionic liquids. Dalton Trans 252(37):5083-5088

32. Jensen M, Neuefeind J, Beitz J et al (2003) Mechanisms of metal ion transfer into room-temperature ionic liquids: the role of anion exchange. J Am Chem Soc Jacs 125(50):15466-15473

33. Zuo Y, Liu Y, Chen J et al (2008) The separation of cerium(IV) from nitric acid solutions containing thorium(IV) and lanthanides( III) using pure [C8mim]PF6 as extracting phase. Ind Eng Chem Res 47(7):2349-2355

34. Belova VV, Voshkin AA, Egorova NS et al (2010) Extraction of rare earth metals from nitrate solutions with a binary extractant based on Cyanex 272. Russ J Inorg Chem 55(4):629-633

35. Rout A, Venkatesan KA, Srinivasan TG et al (2012) Ionic liquids extractans in molecular diluents: extraction behaviour of europium(III) in quaternary ammonium-based ionic liquids. Sep Purif Technol 95(7):26-31

36. Valdés-Vergara M, Lijanova I, Likhanova NV et al (2015) Recycling and recovery of ammonium-based ionic liquids after extraction of metal cations from aqueous solutions. Sep Purif Technol 155:110-117

37. Sun X, Ji Y, Guo L et al (2011) A novel ammonium ionic liquid based extraction strategy for separating scandium from yttrium and lanthanides. Sep Purif Technol 81(1):25-30

38. Castillo J, Coll MT, Fortuny A et al (2014) Cu(II) extraction using quaternary ammonium and quaternary phosphonium based ionic liquid. Hydrometallurgy 141(2):89-96

39. Li D, Wang Z, Song W et al (1994) Recommended separation processes for ion-absorbed rare earth minerals. Hydrometallurgy 94:627-634

40. Preston JS, Cole PM, Craig WM et al (1996) The recovery of rare earth oxides from a phosphoric acid by-product. Part 1: leaching of rare-earth values and recovery of a mixed rare-earth oxide by solvent extraction. Hydrometallurgy 41(1):1-19

41. Preston JS, Cole PM, du Preez AC et al (1996) The recovery of rare-earth oxides from a phosphoric acid by-product. Part 2: the preparation of high-purity cerium dioxide and recovery of a heavy rare-earth oxide concentrate. Hydrometallurgy 41(1): 21-44

42. Preston JS, du Preez AC, Cole PM et al (1996) The recovery of rare-earth oxides from a phosphoric acid by-product. Part 3: the separation of the middle and light rare-earth fractions and the preparation of pure europium oxide. Hydrometallurgy 42(2):131-149

43. Reddy MLP, Prasada RT, Damodaran AD (1993) Liquid-liquid extraction processes for the separation and purification of rare earths. Miner Process Extr Metall Rev 12(2-4):91-113

44. Sato T (1989) Liquid-liquid extraction of rare-earth elements from aqueous acid solutions by acid organophosphorus compounds. Hydrometallurgy 22(1-2):121-140

45. Sun X, Luo H, Dai S (2012) Solvent extraction of rare-earth ions based on functionalized ionic liquids. Talanta 90(1):132-137

46. Yang F, Kubota F, Baba Y et al (2013) Selective extraction and recovery of rare earth metals from phosphor powders in waste fluorescent lamps using an ionic liquid system. J Hazard Mater 254-255:79-88

47. Rout A, Binnemans K (2014) Liquid-liquid extraction of europium( III) and other trivalent rare-earth ions using non-fluorinated functionalized ionic liquid. Dalton Trans 43(4):1862-1872

48. Sang JY, Lee JG, Tajima H (2010) Extraction of lanthanide ions from aqueous solution by bis(2-ethylhexyl)phosphoric acid with room-temperature ionic liquids. J Ind Eng Chem 16(3):350-354

49. Rout A, Kotlarska J, Dehaen W et al (2013) Liquid-liquid extraction of neodymium(III) by dialkylphosphate ionic liquids from acidic medium: the importance of the ionic liquid cation. Phys Chem Chem Phys 15(39):16533-16541

50. Yang F, Kubota F, Kamiya N et al (2013) Extraction of rareearth ions with an 8-hydroxyquinoline derivative in an ionic liquid. Solv Extr Res Dev, Jpn 20:123-129

51. Zhang P, You S, Zhang L et al (1997) A solvent extraction process for the preparation of ultrahigh purity scandium oxide. Hydrometallurgy 47(1):47-56

52. Li D, Wang C (1998) Solvent extraction of scandium(III) by Cyanex 923 and Cyanex 925. Hydrometallurgy 48(3):301-312

53. Wang W, Pranolo Y, Cheng YC (2013) Recovery of scandium from synthetic red mud leach solutions by solvent extraction with D2EHPA. Sep Purif Technol 108(16):96-102

54. Dalvi MB, Khopkar SM (1979) Solvent extraction of scandium from malonic acid with high molecular-weight amines. Talanta 26(9):892-894

55. Fujinaga K, Yoshimori M, Nakajima Y et al (2013) Separation of Sc(III) from ZrO(II) by solvent extraction using oxidized Phoslex DT-8. Hydrometallurgy 133(2):33-36

56. Zhou HM, Yi DQ, Zhang Y et al (2005) The dissolution behaviour of Nb2O5, Ta2O5 and their mixture in highly concentrated KOH solution. Hydrometallurgy 80(1-2):126-131

57. Zhou H, Zheng S, Zhang Y (2005) Leaching of a low-grade niobium-tantalum ore by highly concentrated caustic potash solution. Hydrometallurgy 80(1-2):83-89

58. Wang XH, Zheng SL, Xu HB et al (2010) Dissolution behaviours of Ta2O5, Nb2O5 and their mixture in KOH and H2O system. Trans Nonferr Metals Soc China 20(10):2006-2011

59. Yang XL, Wang XH, Wei C et al (2013) Decomposition of niobium ore by sodium hydroxide fusion method. Metall Mater Trans B 44(1):45-52

60. Packer KJ, Muetterties EL (1963) Nature of viobium(V) fluoride species in solution. J Am Chem Soc 85(19):3035-3036

61. Baumann EW (1972) Investigation of the tantalum fluoride system using the fluoride-selective electrode. J Inorg Nucl Chem 34(2):687-695

62. Zhu Z, Cheng CY (2011) Solvent extraction technology for the separation and purification of niobium and tantalum: a review. Hydrometallurgy 107(1-2):1-12

63. Okada T (2001) Manufacturing of special niobium oxides for optical and ceramic applications. In: International symposium on niobium, pp 175-183

64. Agulyansky A (2004) The chemistry of tantalum and niobium fluoride compounds. Elsevier, Amsterdam, pp 339-340

65. Nishimura S, Moriyama J, Kushima I (1964) Behaviors of Sn, Ti and Fe in liquid-liquid extraction of Nb and Ta. Trans Jpn Inst Met 5(1):32-38

66. Nishimura S, Moriyama J, Kushima I (1964) extraction and separation of tantalum and niobium by liquid-liquid extraction in the HF-H2SO4-TBP system. Trans Jpn Inst Met 5(1):39-42

67. Giridhar P, Abedin SZE, Bund A et al (2014) Electrodeposition of niobium from 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl) amide ionic liquid. Electrochim Acta 129(16):312-317

68. Mascia M, Vacca A, Mais L et al (2014) Electrochemical deposition of Cu and Nb from pyrrolidinium based ionic liquid. Thin Solid Films 571:325-331

69. Maho A, Delhalle J, Mekhalif Z (2013) Study of the formation process and the characteristics of tantalum layers electrodeposited on nitinol plates in the 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid. Electrochim Acta 89(1):346-358

70. Babushkina OB, Ekres S (2010) Spectroscopic study of the electrochemical behaviour of tantalum(V) chloride and oxochloride species in 1-butyl-1-methylpyrrolidinium chloride. Electrochim Acta 56(2):867-877

71. Alibrahim M, Shlewit H, Alike S (2008) Solvent extraction of Vanadium (IV) with di(2-ethylhexyl) phosphoric acid and tributyl phosphate. Period Polytech Chem Eng 52(1):29-33

72. Li X, Deng Z, Wei C et al (2015) Solvent extraction of vanadium from a stone coal acidic leach solution using D2EHPA/TBP: continuous testing. Hydrometallurgy 154:40-46

73. Hu G, Chen D, Wang L et al (2014) Extraction of vanadium from chloride solution with high concentration of iron by solvent extraction using D2EHPA. Sep Purif Technol 125(14): 59-65

74. Deng ZG, Wei C, Fan G et al (2010) Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction. Trans Nonferr Met Soc China 20(S1):s118-s122

75. Jayadas S, Reddy ML (2002) Solvent extraction separation of vanadium(V) from multivalent metal chloride solutions using 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester. J Chem Technol Biotechnol 77(10):1149-1156

76. Li X, Wei C, Wu J et al (2012) Thermodynamics and mechanism of vanadium(IV) extraction from sulphate medium with D2EHPA, EHEHPA and CYANEX 272 in kerosene. Trans Nonferr Met Soc China 22(2):461-466

77. Zhao J, Hu Q, Li Y et al (2015) Efficient separation of vanadium from chromium by a novel ionic liquid-based synergistic extraction strategy. Chem Eng J 264:487-496

78. Cui Z, Muralidhara H (2010) Membrane technology. Elsevier/Butterworth-Heinemann, Oxford

79. Scott K (1995) Handbook of industrial membranes. Elsevier Advanced Technology, Oxford

80. Kocherginsky NM, Yang Q, Seelam L (2007) Recent advances in supported liquid membrane technology. Sep Purif Technol 53(2):171-177

81. Lozano LJ, Godínez C, Ríos APDL et al (2011) Recent advances in supported ionic liquid membrane technology. J Membr Sci 376(1-2):1-14

82. Ríos APDL, Hernández-Fernández FJ, Lozano LJ et al (2013) On the selective separation of metal ions from hydrochloride aqueous solution by pertraction through supported ionic liquid membranes. J Membr Sci 444(1):469-481

83. Yang XJ, Gu ZM, Fane AG (1999) Multicomponent separation by a combined extraction/electrostatic pseudo-liquid membrane (II): extraction and group separation of rare earths from simulated rare-earth ore leach solutions. Hydrometallurgy 53(1):19-29

84. Yaftian MR, Burgard M, Dieleman CB et al (1998) Rare-earth metal-ion separation using a supported liquid membrane mediated by a narrow rim phosphorylated calix

[4] arene. J Membr Sci 144(1-2):57-64

85. Zhu LL, Guo L, Zhang ZJ et al (2012) The preparation of supported ionic liquids (SILs) and their application in rare metals separation. Sci China Chem 55(08):1479-1487

86. Wannachod T, Leepipatpiboon N, Pancharoen U et al (2014) Separation and mass transport of Nd(III) from mixed rare earths via hollow fiber supported liquid membrane: experiment and modeling. Chem Eng J 248:158-167

87. Nakayama C, Uemiya S, Kojima T (1995) Separation of rare earth metals using a supported liquid membrane with DTPA. J Alloy Compd 225(1-2):288-290

88. Chitra KR, Gaikwad AG, Surender GD et al (1997) Studies on ion transport of some rare-earth elements through solvating extractants immobilised on supported liquid membrane. J Membr Sci 125(2):257-268

89. Yang F, Kubota F, Baba Y et al (2013) Selective extraction and recovery of rare earth metals from phosphor powders in waste fluorescent lamps using an ionic liquid system. J Hazard Mater 254(12):79-88

90. Kubota F, Shimobori Y, Koyanagi Y et al (2010) Uphill transport of rare-earth metals through a highly stable supported liquid membrane based on an ionic liquid. Anal Sci Int J Jpn Soc Anal Chem 26(3):289-290

91. Baba Y, Kubota F, Kamiya N et al (2011) Recent advances in extraction and separation of rare-earth metals using ionic liquids. J Chem Eng Jpn 44(10):679-685

92. Yang XJ, Gu ZM, Wang DX (1995) Extraction and separation of scandium from rare-earths by electrostatic pseudo liquid membrane. J Membr Sci 106(1-2):131-145

93. Campderrós ME, Marchese J (2010) Facilitated transport of niobium(V) and tantalum(V) with supported liquid membrane using TBP as carrier. J Membr Sci 164(99):205-210

94. Campderrós ME, Marchese J (2001) Transport of niobium( V) through a TBP-Alamine 336 supported liquid membrane from chloride solutions. Hydrometallurgy 61(2):89-95

95. Buachuang D, Ramakul P, Leepipatpiboon N et al (2011) Mass transfer modeling on the separation of tantalum and niobium from dilute hydrofluoric media through a hollow fiber supported liquid membrane. J Alloy Compd 509(39):9549-9557

96. Palet C, Muñoz M, Hidalgo M et al (1995) Transport of vanadium( V) through a tricaprylylmethylammonium solid supported liquid membrane from aqueous acetic acid/acetate solutions. J Membr Sci 98(3):241-248

97. Chaudry MA, Bukhari N, Mazhar M (2007) Vanadium(V) ions transport through tri-n-octyl amine cyclohexane supported liquid membranes. Sep Purif Technol 54(2):227-233

98. Yadav SV, Mahajani VV (2007) Liquid emulsion membrane (LEM) process for vanadium (IV) enrichment: process intensification. Sep Sci Technol 42(6):1283-1303

99. Nosrati S, Jayakumar NS, Hashim MA et al (2013) Performance evaluation of vanadium (IV) transport through supported ionic liquid membrane. J Taiwan Inst Chem Eng 44(3):337-342

100. Albright L (2009) Albright’s chemical engineering handbook. CRC Press, Boca Raton, pp 709-715

101. Brennecke JF, Maginn EJ (2001) Ionic liquids: innovative fluids for chemical processing. AIChE J 47(11):2384-2389

102. Khupse ND, Kumar A (2010) Ionic liquids: new materials with wide applications. Indian J Chem 49(5-6):635-648

103. Letcher T (2007) Thermodynamics, solubility and environmental issues. Elsevier, Amsterdam

104. Atkins MP, Davey P, Fitzwater G et al (2004) Ionic liquids: a map for industrial innovation. Report Q001, January 2004. QUILL, Belfast

105. Fitzwater G, Geissler W, Moulton R et al (2005) Ionic liquids: sources of innovation, report Q002. QUILL, Belfast

106. Chemical Industry Vision 2020 Technology Partnership (2004) Accelerating ionic liquid commercialization. Research Needs to Advance New Technology, pp 1-40
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