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Treatment of Composted Soils contaminated with Petroleum Hydrocarbons using Chemical Oxidation followed by Enhanced Aerobic Bioremediation
-
Paula Cajal-Mariñosa
,
Olga Reich
Published/Copyright:
November 30, 2016
Abstract
Two different soils that had been composted to treat petroleum hydrocarbons were further treated with chemical oxidation followed by enhanced aerobic bioremediation to degrade residual hydrocarbons, mostly motor oil, that composting did not treat. Composted soils are rich in non-target organic matter that scavenges the chemical and biological amendments intended for degradation of the target contaminants, making composted soils very difficult to treat. Therefore, the design approach was to use chemical oxidation to enhance the biodegradability of the target contaminants in a subsequent step. Modified Fenton chemistry was used for chemical oxidation, and aerobic bioremediation was promoted with an oxygen releasing compound. The results showed a moderate reduction in target hydrocarbon content resulting from the Fenton treatment. However, the biochemical oxygen demand (BOD7) increased in almost all the samples that were subjected to modified Fenton treatment, demonstrating that chemical oxidation enhanced the biodegradability of the residual hydrocarbons left after composting. Modified Fenton treatment enhanced both the extractability of hydrocarbons from the soils and removal of hydrocarbons during enhanced bioremediation. The results from this study show that chemical oxidation combined with biological polishing is a promising new alternative for soil treatment.
Keywords: composted soils; chemical oxidation; oxygen releasing compound (ORC); hydrogen peroxide; soil matrix
Received: 2011-11-22
Revised: 2012-1-11
Accepted: 2012-1-12
Published Online: 2016-11-30
Published in Print: 2012-1-1
© 2016 by Walter de Gruyter Berlin/Boston
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Keywords for this article
composted soils;
chemical oxidation;
oxygen releasing compound (ORC);
hydrogen peroxide;
soil matrix
Articles in the same Issue
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- The Influence of Solution Composition on the Effectiveness of Degradation of Ibuprofen Sodium Salt in a Hybrid Photocatalysis – Membrane Distillation System
- Antifungal Effect of Titanium Dioxide, Indoor Light and the Photocatalytic Process in In Vitro Test on Different Media
- Influence of Contaminants on Arc Properties during Treatment of Polluted Soils in Electric Arc Plasma
- DDT-Contaminated Soil Treatment with Persulfate and Hydrogen Peroxide Utilizing Different Activation Aids and the Chemicals Combination with Biosurfactant
- Landfill Leachate Treatment by Fenton, Photo-Fenton Processes and their Modification
- The Technological Parameters of Hydrochlorination of Glycerol to Dichloropropanols
- Characterization of TiO2 Modified with Bimetallic Ag/Au Nanoparticles Obtained inMicroemulsion System
- Application of Fenton´s Reagent for Acrylic Dyeing Wastewater Decolorization, Organic Matter Reduction and Biodegradability Improvement
- Photocatalytic and Self-cleaning Properties of Titania Coatings Prepared by Inkjet Direct Patterning of a Reverse Micelles Sol-gel Composition
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- Assessing the Effect of Inorganic Anions on TiO2-Photocatalysis and Ozone Oxidation Treatment Efficiencies
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- Photodegradation of p-cresol in Aqueous Mn(1%)-Doped ZnO Suspensions
- CFD Modeling of Fixed Photocatalytic Inserts for a Continuous Flow Reactor for Water Disinfection
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- Treatment of Composted Soils contaminated with Petroleum Hydrocarbons using Chemical Oxidation followed by Enhanced Aerobic Bioremediation
