Biodisponibilidad de hidrocarburos en suelos contaminados por petróleo utilizando la Norma ISO 16751:2020

Abstract

Abstract: Soil contamination by petroleum hydrocarbons is a frequent problem in the Ecuadorian Amazon, remediation is generally applied for this treatment environmental based on the interaction of microorganisms with soil contaminants, The effectiveness of this treatment depends on the bioavailability of the organic compounds pollutants. In the present work, the concentration of total hydrocarbons was studied of petroleum (TPH) in soils through experimental units (controlled tests of field) applied in biological treatments of soils contaminated with hydrocarbons recalcitrant, in soils contaminated with non-recalcitrant hydrocarbons (hydrocarbons clean) and in a blank as a control; The final results were compared with those obtained in bioavailability based on the ISO 16751 Standard, which consisted of determining the fraction potentially bioavailable from non-polar organic compounds through extractions chemicals, using a strong adsorbent and a complexing agent. The trials of clean hydrocarbons showed greater TPH removal than the recalcitrant hydrocarbons. Furthermore, the toxicity analyzes carried out showed that soils contaminated with recalcitrant hydrocarbons (low bioavailability) are less toxic than clean hydrocarbons (high bioavailability)