Sequential extraction studies of Cu, Cd and U compounds from Gibbsite – bearing shale material, Abu Thor area, Southwestern Sinai, Egypt.
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.. EKB Journal Management System, 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.". EKB Journal Management System, 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.', EKB Journal Management System, 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.. EKB Journal Management System, 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, Page 445-461  XML PDF (859.71 K)
Document Type: Original Article
DOI: 10.21608/jsrs.2018.14509
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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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