Biorecovery of sewage polluted by waste motor oil

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

Improving the Performance Properties of Impregnated Wood with its Subsequent Utilization into a Biochar Sorbent

“…Used motor oil may contain some toxic components, as well as heavy metals formed as a result of thermal destruction during engine operation (García-Hernández et al, 2022;Widodo, Setyo, et al, 2018). However, it can be used in remote areas with limited populations where continuous supply of goods cannot be ensured, and as an alternative to the more toxic creosote.…”

“…In a previous study (Belchinskaya et al, 2021) we showed the possibility of utilization of used motor oil to waterproof the wood used in non-residential construction and protect it from sizing and biodegradation. Although it has been proven that used motor oils may contain heavy metals (Mishra, Asmita, et al, 2021) and other organic toxic components (García-Hernández et al, 2022;Widodo, Setyo, et al, 2018).…”