E Ffectiveness of Intrinsic Biodegradation Enhancement in Oil Hydrocarbons Contaminated Soil

Abstract

Studies were conducted using a 10-chamber Micro-Oxymax (Columbus, OH, USA) respirometer to determine the effect of bioaugmentation, biostimulation and combination of them on enhancing intrinsic biodegradation of oil hydrocarbons in soil. Contaminated soil was collected from a former military airport in Kluczewo, Poland. Bioaugmentation was realized by addition of indigenous or exogenous bacteria to soil. Biostimulation was done by aerated water supply and surfactant addition. Bioaugmentation + addition of a surfactant was applied as the combined treatment. The intrinsic and enhanced hydrocarbons biodegradation rates were estimated from the slopes of linear regressions of cumulative curves of O 2 uptake. Pertinent biodegradation rates were recalculated on the basis of the stoichiometric reaction (mass balance equation) and conversion equation. The results showed that combined treatment (indigenous bacteria bioaugmentation + addition of a surfactant) was the most effective method of biodegradation enhancement as the 20-fold increase of biodegradation rate was observed.

Effective Removal of Alkanes and Polycyclic Aromatic Hydrocarbons by Bacteria from Soil Chronically Exposed to Crude Petroleum Oil

“…Short and long-chain alkanes and PAHs were the most common components of crude oil. Many organisms utilize these components as carbon and energy sources (Zawierucha et al, 2014;Adetutu et al, 2015;Ahmad et al, 2015). Despite their hydrophobicity, long-chain alkanes and PAHs can be degraded by microorganisms but at a slower rate (Chen et al 2017b).…”

Immobilisation of Selected Bacteria for Remediation on Various Media

“…Bioremediation is a process using the ability of select organisms (microorganisms, plants) to grow in toxic conditions and to decompose toxic substances. Enzymes produced by microorganisms can also be used [3,4]. Bioremediation is a promising technique due to a number of its advantages, which include in particular the opportunities for in situ biological reclamation, cost-effectiveness, and no need for specialized equipment.…”

A method for remediation of soil contaminated with simazine

“…They can utilize this compound as the only source of carbon and nitrogen (Kodama et al 2011). Utilization of such microorganisms may potentially enable classic bioremediation methods for treatment of simazine contaminated soil (Zawierucha et al 2014).…”