The Accelerated Enzymatic Biodegradation and Cod Removal of Petroleum Hydrocarbons in the Scr Using Active Bacterial Biomass Capable of In-Situ Generating Peroxidase and Biosurfactants

The Accelerated Enzymatic Biodegradation and Cod Removal of Petroleum Hydrocarbons in the Scr Using Active Bacterial Biomass Capable of In-Situ Generating Peroxidase and Biosurfactants Publisher

Moussavi G¹ ; Shekoohiyan S¹ ; Naddafi K²

Show Affiliations

1. Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
2. Department of Environmental Health Engineering, Faculty of Public Health, Tehran University of Medical Sciences, Tehran, Iran

Source: Chemical Engineering Journal Published:2017

Abstract

The enzyme-accelerated biodegradation of total petroleum hydrocarbons (TPH) was investigated in a sequencing continuous-inflow reactor (SCR) at different operational parameters of H2O2/TPH ratio, initial TPH concentration and hydraulic retention time (HRT). The optimum H2O2/TPH mass ratio was determined to be 0.35 at which the complete TPH removal of inlet TPH concentrations up to 4 g/L at HRT of 24 h, corresponding to the loading rate of 4 kg TPH/m3.d, was attained. The average COD removal efficiency at this loading rate was 96.7%. With increasing the inlet TPH concentration from 1 to 2.5 g/L, the biomass bacterial activity as dehydrogenase activity (DHA) increased from 7.5 to 27.1 μg TF/gbiomass.d and remained almost unchanged with further increase of TPH concentration. The peroxidase activity (PA) remained high between 382 and 410 U/gbiomass. In addition, the complete removal of 1 g/L TPH (88.7% COD removal) was observed at HRT of as small as 4 h (corresponding to the loading rate of 6 kg TPH/m3.d) under optimum H2O2/TPH mass ratio. With the decrease of HRT from 24 h to 4 h at the constant TPH concentration of 1 g/L the value of DHA remained between 24.4 and 28.4 μg TF/gbiomass.d while the PA value increased from 287.9 to 394.4 U/gbiomass. Total production of biosurfactants was 131 mg/L (38 mg/L rhamnolipid and 93 mg/L surfactin) when the SCR was operated at TPH loading rate of 6 kg/m3.d. Finally, the enhanced enzymatic biodegradation of TPH by using diverse microbial consortia capable of in-situ production of peroxidase and biosurfactant generation in the SCR is a very efficient and promising technique for accelerated biodegradation and COD removal of petroleum hydrocarbons. © 2016 Elsevier B.V.

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Experts (# of related papers)

Kazem Naddafi (4)

Style	Citing Format
MLA	Moussavi G, Shekoohiyan S, Naddafi K. "The Accelerated Enzymatic Biodegradation and Cod Removal of Petroleum Hydrocarbons in the Scr Using Active Bacterial Biomass Capable of In-Situ Generating Peroxidase and Biosurfactants." Chemical Engineering Journal, vol. 308, no. , 2017, pp. 1081-1089.
APA	Moussavi G, Shekoohiyan S, Naddafi K (2017). The Accelerated Enzymatic Biodegradation and Cod Removal of Petroleum Hydrocarbons in the Scr Using Active Bacterial Biomass Capable of In-Situ Generating Peroxidase and Biosurfactants. Chemical Engineering Journal, 308(), 1081-1089.
Chicago	Moussavi G, Shekoohiyan S, Naddafi K. "The Accelerated Enzymatic Biodegradation and Cod Removal of Petroleum Hydrocarbons in the Scr Using Active Bacterial Biomass Capable of In-Situ Generating Peroxidase and Biosurfactants." Chemical Engineering Journal 308, no. (2017): 1081-1089.
Harvard	Moussavi G, Shekoohiyan S, Naddafi K (2017) 'The Accelerated Enzymatic Biodegradation and Cod Removal of Petroleum Hydrocarbons in the Scr Using Active Bacterial Biomass Capable of In-Situ Generating Peroxidase and Biosurfactants', Chemical Engineering Journal, 308(), pp. 1081-1089.
Vancouver	Moussavi G, Shekoohiyan S, Naddafi K. The Accelerated Enzymatic Biodegradation and Cod Removal of Petroleum Hydrocarbons in the Scr Using Active Bacterial Biomass Capable of In-Situ Generating Peroxidase and Biosurfactants. Chemical Engineering Journal. 2017;308():1081-1089.
BibTex	@article{ author = {Moussavi G and Shekoohiyan S and Naddafi K}, title = {The Accelerated Enzymatic Biodegradation and Cod Removal of Petroleum Hydrocarbons in the Scr Using Active Bacterial Biomass Capable of In-Situ Generating Peroxidase and Biosurfactants}, journal = {Chemical Engineering Journal}, volume = {308}, number = {}, pages = {1081-1089}, year = {2017} }
RIS	TY - JOUR AU - Moussavi G AU - Shekoohiyan S AU - Naddafi K TI - The Accelerated Enzymatic Biodegradation and Cod Removal of Petroleum Hydrocarbons in the Scr Using Active Bacterial Biomass Capable of In-Situ Generating Peroxidase and Biosurfactants JO - Chemical Engineering Journal VL - 308 IS - SP - 1081 EP - 1089 PY - 2017 ER -

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