Biorecovery of sewage polluted by waste motor oil

Author:

Garcia-Hernandez David,Benavides Liliana Marquez,Ignacio-De la Cruz Juan Luis,Sanchez-Yanez Juan Manuel

Abstract

An acute problem in México and everywhere is the reutilization of sewage polluted by hydrocarbon, such as waste motor oil (O), a toxic waste according to the General Law of Ecological Balance and Environmental Protection and NOM-001- SEMARNAT-1996, NOM-002-ECOL-1997 and NOM-003-ECOL-1997, indicate that the maximum permissible limits of 25 ppm of hydrocarbons in sewage 75 ppm of wastewater to systems of urban sewage and 15 ppm for treated wastewater for public reuse, respectively, which, when exceeding the total of these values, inhibiting the treatment of that domestic sewage. An alternative solution is biostimulation with detergent, minerals and O2 (oxygen) that induce the aerobic heterotrophic microbial population in the sewage to eliminate WMO and reuse it. The objective of this work was the biostimulation of domestic sewage contaminated by AWO until it decreased to a value lower than the maximum of the NOM-001-SEMARNAT-1996, NOM-002-ECOL-1997 and NOM-003-ECOL-1997. For this, the sewage impacted by WMO was diluted and biostimulated with the detergent Tween 80, a mineral solution (MS) and H2O2 as a source of O2, using the response variables: i) CO2 production due to the mineralization of AWO in sewage, ii) determination of the decrease in the concentration of WMO in sewage by gas chromatography coupled to mass (GC-MS) and by Soxhlet, the experimental data was analyzed by ANOVA/Tukey HSD (P ≤ 0.05). The results indicate that the BIS of the water impacted by WMO with Tween 80, MS and H2O2, reduced the concentration to a value of 10 ppm, lower than that established by the NOM-001-SEMARNAT-1996, the NOM-002-ECOL -1997 and NOM-003-ECOL-1997, due to mineralization of the WMO and the evidence of its disappearance according to the CG-EM analysis. This demonstrated the biorecovery of water contaminated by WMO allow industrial and/or recreational reuse

Publisher

MedCrave Group Kft.

Subject

Microbiology (medical),Immunology,Immunology and Allergy

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