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Anoxic Biodegradation of Petroleum Hydrocarbons in Saline Media Using Denitrifier Biogranules Publisher Pubmed



Moussavi G1 ; Shekoohiyan S1 ; Naddafi K2
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
  2. 2. Department of Environmental Health Engineering, Faculty of Public Health, Tehran University of Medical Sciences, Tehran, Iran

Source: Ecotoxicology and Environmental Safety Published:2016


Abstract

The total petroleum hydrocarbons (TPH) biodegradation was examined using biogranules at different initial TPH concentration and contact time under anoxic condition in saline media. The circular compact biogranules having the average diameter between 2 and 3 mm were composed of a dense population of Bacillus spp. capable of biodegrading TPH under anoxic condition in saline media were formed in first step of the study. The biogranules could biodegrade over 99% of the TPH at initial concentration up to 2 g/L at the contact time of 22 h under anoxic condition in saline media. The maximum TPH biodegradation rate of 2.6 gTPH/gbiomass.d could be obtained at initial TPH concentration of 10 g/L. Accordingly, the anoxic biogranulation is a possible and promising technique for high-rate biodegradation of petroleum hydrocarbons in saline media. © 2016 Elsevier Inc.
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