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Biodegradation of Atrazine From Wastewater Using Moving Bed Biofilm Reactor Under Nitrate-Reducing Conditions: A Kinetic Study Publisher Pubmed



Derakhshan Z1, 2, 3 ; Ehrampoush MH1 ; Mahvi AH4, 5 ; Ghaneian MT1 ; Mazloomi SM6 ; Faramarzian M7 ; Dehghani M7 ; Fallahzadeh H8 ; Yousefinejad S9 ; Berizi E6 ; Bahrami S7
Authors
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Authors Affiliations
  1. 1. Environmental Science and Technology Research Center, Department of Environmental Health Engineering, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  2. 2. Student Research Committee, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  3. 3. Department of Environmental Health, School of Health, Larestan University of Medical Sciences, Larestan, Iran
  4. 4. Center for Solid Waste Research (CSWR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  6. 6. Nutrition Research Center, Department of Food Hygiene and Quality Control, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
  7. 7. Research Center for Health Sciences, Department of Environmental Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
  8. 8. Prevention and Epidemiology of Non-Communicable Disease Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
  9. 9. Research Center for Health Sciences, Department of Occupational Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran

Source: Journal of Environmental Management Published:2018


Abstract

In this study employed an anoxic moving bed biofilm reactor (AnMBBR) to evaluate the effects of hydraulic and toxic shocks on performance reactor. The results indicated a relatively good resistance of system against exercised shocks and its ability to return to steady-state conditions. In optimal conditions when there was the maximum rate of atrazine and soluble chemical oxygen demand (COD) removal were 74.82% and 99.29% respectively. Also, atrazine biodegradation rapidly declines in AnMBBR from 74% ± 0.05 in the presence of nitrate to 9.12% only 3 days after the nitrate was eliding from the influent. Coefficients kinetics was studied and the maximum atrazine removal rate was determined by modified Stover & Kincannon model (Umax = 9.87 gATZ/m3d). Results showed that AnMBBR is feasible, easy, affordable, so suitable process for efficiently biodegrading toxic chlorinated organic compounds such as atrazine. Also, its removal mechanism in this system is co-metabolism. © 2018 Elsevier Ltd
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