Chromate reduction by resting cells of Achromobacter sp. Ch-1 under aerobic conditions |
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| Institution: | 1. Department of Health Laboratory Technology, School of Public Health and Management, Chongqing Medical University, Medical 1 Yixueyuan Road, Yuzhong District, Chongqing 400016, China;2. Research Center for Medicine and Social Development, Chongqing Medical University, Chongqing 400016, China;3. Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing 400016, China;1. Department of Geology and Environmental Earth Science, Miami University, Oxford, OH 45056, United States;2. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing 100083, China;3. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China;4. Department of Chemistry and Biochemistry, Miami University, Oxford, OH 45056, United States;5. Case Western Reserve University Center for Synchrotron Biosciences, National Synchrotron Light Source, Brookhaven National Laboratory, Upton, NY 11973, United States;6. Department of Paper and Chemical Engineering, Miami University, Oxford, OH 45056, United States;1. Department of Botany, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan;2. Department of Applied Biosciences, Kyungpook National University, Daegu 702-701, Republic of Korea;3. Department of Agriculture, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan;4. Department of Biotechnology, Garden Campus, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan;1. Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Science, Lanzhou University, Tianshuinanlu #222, Lanzhou, Gansu 730000, PR China;2. Gansu Academy of Membrane Science and Technology, Duanjiatanlu #1272, Lanzhou, Gansu 730020, PR China;3. PetroChina Lanzhou Petrochemical Company, Yumenjie #10, Lanzhou, Gansu 730060, PR China;4. School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu 221116, PR China |
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| Abstract: | Chromate reduction was carried out by resting cells of Achromobacter sp. Ch-1 with lactate as electron donor under aerobic conditions. The reduction activity of the samples supplemented with lactate was two times as those without lactate. The reduction rate was influenced by initial pH and lactate concentration. Under the optimal conditions, pH 9.0 and 4000 mg l−1 lactate supplement, reduction rate was 5.45 mg l−1 min−1. The reduction rate decreased with increasing of Cr(VI) concentrations and increased with cell densities proportionally. The maximum reduction limit of Ch-1 cells was obtained at 2107 mg l−1 of Cr(VI). |
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