Recovery of soils contaminated by hydrocarbons using bacterial biomass: Systematic review and meta-analysis

Acruta Paredes L.F.B.; Leyva Lira A.Y.; Castañeda Olivera C.A. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2022) · DOI: 10.18687/laccei2022.1.1.769

Resumen

Hydrocarbons are considered one ofthe most toxic pollutants, since they generate harmful substances for the soil, which leads to the deteriorationofits structure. The objectiveofthis research was to evaluate, through a systematicreview andmeta-analysis, theefficiency of the use of bacterial biomass for the remediation of soils contaminated by hydrocarbons. The methodology was based on a quantitative approach, of applicative type and non-experimental design. For the collection ofinformation, articles published between January 2011 and September 2021 were considered, using the Web of Science and Scopus databases. The meta-analysis was performed using Review Manager 5.4 software (Revman). The results revealed that the included investigations showed considerable statistical heterogeneity (I2= 91%) and that the highest percentage of hydrocarbon adsorption (100%) was achieved by Jiang et al. (2015) using Bacillus Thuringiensis, having a concentrationof500mg/kg phenanthrene in soil. Finally, it is concludedthat the applicationofbacterialbiomassisefficient for the adsorption ofhydrocarbonspresent in contaminatedsoils, andit is anenvironmentally friendly technique that doesnotgenerate harmful products.

Instituciones: Universidad César Vallejo