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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2984
Title: Recycling of Zn-C and Ni-Cd spent batteries using Cyphos IL 104 via hydrometallurgical route
Authors: Mahandra H.
Singh R.
Gupta B.
Published in: Journal of Cleaner Production
Abstract: The study suggests hydrometallurgical routes for the recovery of zinc and cadmium from spent battery leachates using a novel extractant Cyphos IL 104 diluted in toluene and synthesis of zinc and cadmium oxides from the loaded organic phases. Leaching is carried out using 5 mol/L HCl and the composition of the leach liquors obtained from Zn-C and Ni-Cd spent batteries in g/L is Zn- 2.400, Mn - 4.870, Fe - 2.655 × 10−3, and Cd- 4.280, Ni- 89.60 × 10−3, Fe- 148.2 × 10−3, Co- 3.765 × 10−3, respectively. McCabe Thiele diagrams are drawn to determine the number of theoretical stages required for the quantitative extraction and stripping of zinc and cadmium and the data has been confirmed by counter current simulation studies. McCabe Thiele diagrams indicate two extraction stages for both zinc and cadmium at A/O = 1/1 and A/O = 3/2, respectively. EDTA (0.1 mol/L) and HNO3 (1.0 mol/L) are used as strippant for zinc and cadmium, respectively. Quantitative stripping of zinc and cadmium requires two and three counter current stripping stages, respectively at O/A = 1/1. Results of counter current extraction and stripping show quantitative recovery (>99%) of zinc and cadmium with high purity. Zinc and cadmium oxides have been synthesized from the loaded organic phase using precipitation followed by thermal decomposition of precursors at 400 °C. Synthesized materials were characterized by XRD, FE-SEM and EDX techniques. Zinc and cadmium oxide particles correspond to hexagonal zincite and cubic monteponite structures, respectively. The average particle size of zinc and cadmium oxides is 43 ± 13 nm and 55 ± 14 nm, respectively. The morphology of zinc and cadmium oxide particles is considered to be globular with particle agglomeration. The proposed methods are selective for zinc and cadmium. Results of present study have been compared with the reported data. © 2017 Elsevier Ltd
Citation: Journal of Cleaner Production (2018), 172(): 133-142
URI: https://doi.org/10.1016/j.jclepro.2017.10.129
http://repository.iitr.ac.in/handle/123456789/2984
Issue Date: 2018
Publisher: Elsevier Ltd
Keywords: Cyphos IL 104
McCabe-Thiele diagrams
Ni-Cd batteries
Zn-C batteries
ISSN: 9596526
Author Scopus IDs: 56193939400
55496956600
7402195167
Author Affiliations: Mahandra, H., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Singh, R., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Gupta, B., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Funding Details: The authors are thankful to Cytec Inc., Netherlands for providing Cyphos IL 104 as gift sample. Ministry of Human Resources and Development (Grant No.- MHR-01-23-200-428 ) and Council of Scientific & Industrial Research (CSIR), New Delhi, India (Grant No. 09/143(0830)/2013-EMR-I ) are gratefully acknowledged for providing financial support. Appendix A
Corresponding Author: Gupta, B.; Department of Chemistry, Indian Institute of Technology RoorkeeIndia; email: dr.binagupta@gmail.com
Appears in Collections:Journal Publications [CY]

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