G. M., A., A., Z., S., A., El Aassy, I., Seweify, S., Awny, E. (2017). Sequential extraction studies of Cu, Cd and U compounds from Gibbsite – bearing shale material, Abu Thor area, Southwestern Sinai, Egypt.. test, 34(part1), 445-461. doi: 10.21608/jsrs.2018.14509
Abdel-Wahab G. M.; Zeinab H. A.; Aida A. S.; I. E. El Aassy; S. K. Seweify; E. G. Awny. "Sequential extraction studies of Cu, Cd and U compounds from Gibbsite – bearing shale material, Abu Thor area, Southwestern Sinai, Egypt.". test, 34, part1, 2017, 445-461. doi: 10.21608/jsrs.2018.14509
G. M., A., A., Z., S., A., El Aassy, I., Seweify, S., Awny, E. (2017). 'Sequential extraction studies of Cu, Cd and U compounds from Gibbsite – bearing shale material, Abu Thor area, Southwestern Sinai, Egypt.', test, 34(part1), pp. 445-461. doi: 10.21608/jsrs.2018.14509
G. M., A., A., Z., S., A., El Aassy, I., Seweify, S., Awny, E. Sequential extraction studies of Cu, Cd and U compounds from Gibbsite – bearing shale material, Abu Thor area, Southwestern Sinai, Egypt.. test, 2017; 34(part1): 445-461. doi: 10.21608/jsrs.2018.14509

Sequential extraction studies of Cu, Cd and U compounds from Gibbsite – bearing shale material, Abu Thor area, Southwestern Sinai, Egypt.

Journal of Scientific Research in Science
Article 30, Volume 34, part1, September 2017, Pages 445-461    PDF (859.71 K)
Document Type: Original Article
DOI: 10.21608/jsrs.2018.14509
Authors
Abdel-Wahab G. M.1; Zeinab H. A.2; Aida A. S.2; I. E. El Aassy1; S. K. Seweify1; E. G. Awny* 1
1Production Sector, Nuclear Materials Authority, Egypt
2Chemistry Department, Faculty of Science (Girls) , El-Azhar University, Cairo, Egypt
Abstract
        Gibbsite-bearing shale material was recorded within intra-Carboniferous paleokarst profile of Um-Bogma Formation at Abu Thor area. The present paper is concerned with subsequent separation of Cu, Cd and U compounds from the sulfate solution of the present ore material. Abu Thor representative sample assays 0.5% of Cu, 0.014% of Cd and 0.04% of U as the elements of interest. The effective leaching parameters such as: curing temperature, H2SO4 concentrations, solid / liquid addition ratio, leaching time and leaching temperature were planned to investigate. The  obtaind  sulfate solution under the resulting optimum leaching conditions was found assaying 2.24 g/L of Cu, 0.066 g/L of Cd and 0.19 g/L of U with maximum leaching efficiencies of 92%, 96% and 95% , respectively. In addition 0.008% of V with maximum leaching efficiency of 8.6%   The prepared sulfate solution was treated with 0.5% Na2S solution at pH 0.35 for selective separation of CuS where CdS was subsequently selectively separated at pH 0.5. The present U in the solution free from both Cu and Cd was oxidized with H2O2 solution and recovered with anion exchange resin Amberlite IRA400.
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