An Sustainable Strategy for Reuse Agriculture Soil Impacted by A Mixture of Hydrocarbons

In world agriculture; such as the one implemented in Mexico; the use of fossil fuels in machinery for soil preparation and harvesting of an agricultural crop is common. As a result; waste residual oil (WMO) is generated in that sese agricultural soil impacted by 80;000 ppm of WMO exceeds the limit of 4;400 ppm of hydrocarbons according to Mexican environmental regulation NOM-138-SEMARNAT/SS-2003 (NOM-138). WMO causes loss of fertility and environmental pollution. A sustainable strategy of solution is biostimulation and phytoremediation. The aims of this research were: i) Biostimulation of an agricultural soil impacted by 80;000 ppm WMO then by ii) Phytoremediation sowing H. annuus inoculated with B. vietnamiensis and P. polymyxa to reduce WMO at concentration value below the NOM-138 maximum. The variable-response variables of WMO bioelimination from an agricultural soil were: initial and final WMO concentration by Soxhlet; phenology and biomass of H. annuus with B. vietnamiensis and P. polymyxa. Experimental data were validated by ANOVA/Tukey HSD P<0.05 %. The results indicate that biostimulation and phytoremediation sowing H. annus with B. vietnamiensis and P. polymyxa were effective in reducing WMO concentration from 80;000 ppm to 1000 ppm; a value below the maximum limit of NOM-138 an evidence of soil bioremediation. It is concluded that a sustainable strategy to recover the agricultural productivity of a soil impacted by mixture of hydrocarbons It is possible by exploiting the natural microbial heterotrophic aerobic capacity that in combination with plants that tolerate and mineralize hydrocarbon mixtures such as WMO.