Single and binary component sorption of the fission products Sr2+, Cs+ and Co2+ from aqueous solutions onto sulphate reducing bacteria |
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| Authors: | N Ngwenya EMN Chirwa |
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| Affiliation: | 1. Alexandria University, Faculty of Science, Chemistry Department, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt;2. Ain Shams University, Faculty of Science, Chemistry Department, P.O. Box1156, Cairo, Egypt;3. Alexandria University, Faculty of Science, Physics Department, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt;4. Egypt Second Research Reactor, Atomic Energy Authority, P.O. Box 13759, Cairo, Egypt;1. Singapore-Delft Water Alliance, National University of Singapore, 2 Engineering Drive 2, Singapore 117577, Singapore;2. Division of Environmental Science and Engineering, National University of Singapore, Singapore 117576, Singapore;1. IT Nano Electronic Device Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea;2. ZeSHTech Co., Ltd., Business Incubator, Gwangju Institute of Science and Technology, 123, Cheomdangwagi-ro, Buk-gu, Gwangju 500-712, Republic of Korea;3. Department of Electricity, Seoil University, Jungnang-gu, Seoul, 131-702, Republic of Korea;1. Department of Applied Chemistry, Faculty of Science & Engineering, Saga University, Honjo 1, Saga 840-8502, Japan;2. Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John''s, NL, Canada A1B 3X5;3. Research Laboratories, DENSO CORPORATION, Minamiyama 500-1, Komenoki, Nisshin, Aichi 470-0111, Japan;4. New Business Promotion Dept., DENSO CORPORATION, Showa-cho 1-1, Kariya, Aichi 448-8661, Japan;1. Colloid and Environmental Chemistry (CEC) Research Laboratory, Department of Pharmacy and Applied Science, La Trobe Institute for Molecular Science (LIMS), La Trobe University, Bendigo, Australia;2. School of Engineering and Mathematical Sciences, La Trobe University, Bendigo, VIC, 3550, Australia |
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| Abstract: | This study investigates the removal of the fission products Sr2+, Cs+ and Co2+ in single and binary metal solutions by a sulphate reducing bacteria (SRB) biomass. The effect of initial concentration and pH on the sorption kinetics of each metal was evaluated in single metal solutions. Binary component equilibrium sorption studies were performed to investigate the competitive binding behaviour of each metal in the presence of a secondary metal ion. Results obtained from single metal equilibrium sorption studies indicated that SRB have a higher binding capacity for Sr2+ (qmax = 416.7 mg g?1), followed by Cs+ (qmax = 238.1 mg g?1), and lastly Co2+ (qmax = 204.1 mg g?1). Among the binary systems investigated, Co2+ uptake was the most sensitive, resulting in a 76% reduction of the sorption capacity (qmax) in the presence of Cs+. These findings are significant for future development of effective biological processes for radioactive waste management under realistic conditions. |
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