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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3014
Title: Extraction and recovery of Ga(III) from waste material using Cyanex 923
Authors: Gupta B.
Mudhar N.
Begum I. Z.
Singh I.
Published in: Hydrometallurgy
Abstract: The extraction of Ga(III) from HCl, HNO3 and H2SO4 media using 0.50 mol/L Cyanex 923 in toluene is investigated. Ga(III) is quantitatively extracted over a wide range of HCl at high concentration while the extraction is poor over the entire concentration range of HNO3 and H2SO4. The extracted Ga(III) is recovered by stripping with 0.10 mol/L HCl. The extracted species is identified as GaCl3.3Cyanex 923. The extraction behaviour of some commonly associated metal ions is also investigated. Based on the partition data, conditions have been identified for attaining some binary and ternary separations involving Ga(III) and V(IV), Al(III), Fe(III), In(III), Ti(IV), Ni(II), Mn(II), Cu(II), Zn(II), and Hg(II). The conditions are extended for the recovery of pure gallium from light emitting diode (LED) waste and bottom ash. The extractant is stable towards prolonged acid contact and there is a negligible loss in its extraction efficiency even after recycling ten times. © 2007 Elsevier B.V. All rights reserved.
Citation: Hydrometallurgy (2007), 87(43832): 18-26
URI: https://doi.org/10.1016/j.hydromet.2007.01.001
http://repository.iitr.ac.in/handle/123456789/3014
Issue Date: 2007
Keywords: Cyanex 923
Gallium
HCl extraction
LED waste
Partition data
Purification
ISSN: 0304386X
Author Scopus IDs: 7402195167
8254180900
55665390800
57195320309
Author Affiliations: Gupta, B., Department of Chemistry, Indian Institute of Technology Roorkee (IIT Roorkee), Roorkee-247 667, Uttarakhand, India
Mudhar, N., Department of Chemistry, Indian Institute of Technology Roorkee (IIT Roorkee), Roorkee-247 667, Uttarakhand, India
Begum I, Z., Department of Chemistry, Indian Institute of Technology Roorkee (IIT Roorkee), Roorkee-247 667, Uttarakhand, India
Singh, I., Department of Chemistry, Indian Institute of Technology Roorkee (IIT Roorkee), Roorkee-247 667, Uttarakhand, India
Funding Details: Thanks are due to Cytec Inc., Canada, for gifting the Cyanex 923 sample. The financial assistance of the Department of Science and Technology, New Delhi, India is acknowledged.
Corresponding Author: Gupta, B.; Department of Chemistry, Indian Institute of Technology Roorkee (IIT Roorkee), Roorkee-247 667, Uttarakhand, India; email: bvgcyfcy@iitr.ernet.in
Appears in Collections:Journal Publications [CY]

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