Bioestimulación de suelo contaminado con 10000 ppm de aceite residual automotriz y fitorremediación con Cicer arietinum potenciado con Bacillus cereus y Rhizobium etli

Soil pollution by waste motor oil (WMO) is reducing its productivity. An alternative for removing WMO fromsoil is by biostimulation (BIS) applying animal manure and then phytoremediation (PR) by legume improvingwith plant growth promoting bacteria (PGPB) to reduce WMO concentration at level below 4400 ppm limit permitfor the NOM-138-SEMARNAT/SSA1-2012 (NOM-138). The aims of this research were: i) to analyze soil biostimulation polluted by 10000 ppm of WMO applying vermicompost, then subsequent soil phytoremediationwith Cicer arietinum inoculated by Bacillus cereus and/or Rhizobium etli. In soil after applying BS by VC wasmeasured WMO soil concentration and ii) for PR was regarded phenology and biomass of C. arietinum and WMOconcentration remaining at the end of this step. The results showed that soil biostimulated by VC, WMO wasreduced at 1370 ppm, subsequent PR sowing C. arietinum with R. etli, WMR was reduced at 30 ppm concentration both values below to maximum value accepted by NOM-138. Those data indicate that in soil polluted by WMO the best way to biorecovery soil was to integrate strategy BS/PR the last one improved by genus of PGPB.La contaminación de suelo con aceite residual automotriz (ARA) disminuye su productividad. Una alternativa parasu eliminación es la bioestimulación (BS) con un abono animal y posterior fitorremediación (FR) con una leguminosa potenciada con bacterias promotoras de crecimiento vegetal (BPCV), para reducirlo a nivel inferior al límitemáximo permisible de 4400 ppm de acuerdo con la NOM-138-SEMARNAT/SSA1-2012 (NOM-138). Los objetivos de este trabajo fueron: i) bioestimulación de un suelo contaminado con 10000 ppm de ARA con lombricomposta y ii) ulterior Fitorremediación con Cicer arietinum y Bacillus cereus /Rhizobium etli. En la BS del suelo lavariable respuesta fue la concentración del ARA, mientras en la FR la fenología y biomasa de C. arietinum y laconcentración del ARA remanente. Los resultados mostraron que en suelo la BS con lombricomposta al 3% en 3meses el ARA se redujo a 1370 ppm. En tanto que la FR con C. arietinum y R. etli, redujo el ARA hasta 30 ppmambos valores inferiores al máximo permitido por la NOM-138. Lo anterior apoya que en suelo contaminado conARA, la mejor opción de biorrestauración, es la estrategia integral BS y FR potenciada con géneros de BPCV

Biostimulation of soil polluted 10000 ppm of waste motor oil and phytoremediation with Cicer arietinum improved by Bacillus cereus/Rhizobium etli

Soil pollution by waste motor oil (WMO) is reducing its productivity. An alternative for removing WMO from soil is by biostimulation (BIS) applying animal manure and then phytoremediation (PR) by legume improving with plant growth promoting bacteria (PGPB) to reduce WMO concentration at level below 4400 ppm limit permit for the NOM-138-SEMARNAT/SSA1-2012 (NOM-138). The aims of this re-search were: i) to analyze soil biostimulation polluted by 10000 ppm of WMO applying vermicompost, then subsequent soil phytoremediation with Cicer arietinum inoculated by Bacillus cereus and/or Rhizo-bium etli. In soil after applying BS by VC was measured WMO soil concentration and ii) for PR was regarded phenology and biomass of C. arietinum and WMO concentration remaining at the end of this step. The results showed that soil biostimulated by VC, WMO was reduced at 1370 ppm, subsequent PR sowing C. arietinum with R. etli, WMR was reduced at 30 ppm concentration both values below to maxi-mum value accepted by NOM-138. Those data indicate that in soil polluted by WMO the best way to biorecovery soil was to integrate strategy BS/PR the last one improved by genus of PGPB