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Role of Codpcp/Codtotal Ratio on P-Chlorophenol Toxicity Towards Aerobic Granular Sludge Publisher



Mesdaghinia A1, 2 ; Ghahremani MH3, 4 ; Nabizadeh R1, 5 ; Nasseri S1, 2 ; Rafiee M6, 7
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Center for Water Quality Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Toxicology–Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Toxicology and Poisoning Research Center, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
  6. 6. Environmental and Occupational Hazards Control Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  7. 7. Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Source: Journal of Industrial and Engineering Chemistry Published:2017


Abstract

Aerobic granular sludge (AGS) has emerged as a promising biotechnology for the treatment of industrial wastewaters. The biodegradation of AGS utilizing p-chlorophenol (PCP) was investigated under various CODPCP/CODTotal ratios. The initially developed microbial granules were used for degradation of PCP, with monoethylene glycol (MEG) as co-substrate. Heterotrophic bacteria in AGS appeared to adapt fairly rapidly to PCP, and a near complete recovery of their metabolic activity was noticed after about 4 d of exposure to high PCP levels (up to 400 mg/L). Nevertheless, CODPCP/CODTotal ≥ 0.648 did negatively affect granular sludge in terms of both morphology and biological activity. © 2017 The Korean Society of Industrial and Engineering Chemistry