Statistical evaluation and optimization of effective parameters in bioleaching of metals from molybdenite concentrate using Acidianus brierleyi |
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| Affiliation: | 1. Department of Environmental Engineering, Konkuk University, Seoul 143-701, Korea;2. Green Technology Co., Ltd., 6F Hanam Venture Tower B/D, ChangWoo-Dong, HaNam-Si 465-120, GyeongGi-Do, Korea;3. Department of Advanced Technology Fusion, Konkuk University, Seoul 143-701, Korea;1. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China;2. Yunnan Hualian Zinc and Indium Limited by Share Ltd., Wenshan 663701, China;1. Academy of Scientific and Innovative Research, Ghaziabad, Uttar Pradesh 201 002, India;2. CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, Odisha, India;3. Department of Chemistry, Institute of Technical Education and Research, Siksha ‘O’Anusandhan [Deemed to be University], Bhubaneswar 751030, Odisha, India |
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| Abstract: | This study examines the bioleaching ability of a molybdenite concentrate by an adapted bacterium in batch cultures. Acidianus brierleyi was used to mobilize Mo/Cu/Fe from the molybdenite concentrate. Response surface methodology (RSM) was applied to predict the behavior of effective parameters and their interactions in the bioleaching process. Obtained results showed that the best model for the recovery of each metal was the reduced cubic model. At the optimum condition, (0.3%, (w/v) pulp density, 0.2%, (w/v) amount of sulfur, and 1% (v/v) inoculation percentage), the maximum values of recovery were achieved at 2%, 100%, and 100% for Mo, Cu, and Fe, respectively, with a pH of 2.0, and a temperature of 60 °C. |
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| Keywords: | Bioleaching Molybdenite concentrate Process optimization Response surface methodology |
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