Treatment of ex-situ soil-washing fluids polluted with petroleum by anodic oxidation, photolysis, sonolysis and combined approaches
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2016-05-07 |
| Journal | Chemical Engineering Journal |
| Authors | Elisama Vieira dos Santos, Cristina SĂĄez, Pablo Cañizares, Djalma Ribeiro da Silva, Carlos A. MartĂnezâHuitle |
| Institutions | Universidade Federal do Rio Grande do Norte, Hospital General Universitario de Ciudad Real |
| Citations | 80 |
Abstract
Section titled âAbstractâIn this research, the treatment of soil spiked with petroleum was studied using a surfactant-aided soil-washing (SASW) process followed by sonolysis (US), photolysis and boron doped diamond electrolysis (BDD-electrolysis) for washing liquid treatment. Results clearly demonstrate that SASW is a very efficient approach in the treatment of soil, removing completely the petrochemical compounds by using dosages about 5 g of extracting surfactant (sodium dodecyl sulfate (SDS)) per kg of soil. The main characteristics of the effluents produced in this soil remediation technology as well as the efficiency of the treatment (US, photolysis and BDD-electrolysis) depend on the dosage of SDS. Depollution of the effluents (degradation and mineralization of the organic matter) is related to the reduction in size of micelles formed by SDS and petroleum, and it depends on the treatment used. US and photolysis were inefficient decontamination processes, while BDD-electrolysis favors the complete depletion of micelles. However, the intensification of the efficiency was attained by synergic degradation effects when UV light irradiation and US were coupled with BDD-electrolysis, US/BDD-electrolysis and photo/BDD-electrolysis, respectively. Sulfate (coming from SDS) ions play an important role during the BDD-electrolysis, US/BDD-electrolysis and photo/BDD-electrolysis because persulfate and persulfate radicals are produced (by sulfate activation applying US or photolysis), improving the efficiency of the processes.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
Section titled âReferencesâ- 2016 - The influence of clay minerals and surfactants on hydrocarbon removal during the washing of petroleum-contaminated soil [Crossref]
- 2012 - The use of a combined process of surfactant-aided soil washing and coagulation for PAH-contaminated soils treatment [Crossref]
- 2014 - Removal of phenanthrene from synthetic kaolin soils by electrokinetic soil flushing [Crossref]
- 2014 - Study of produced water using hydrochemistry and multivariate statistics in different production zones of mature fields in the Potiguar Basin - Brazil [Crossref]
- 2016 - Removal of hydrophobic organic pollutants from soil washing/flushing solutions: a critical review [Crossref]
- 2014 - Scale-up of electrochemical oxidation system for treatment of produced water generated by Brazilian petrochemical industry [Crossref]
- 2015 - Potential application of a biosurfactant in phytoremediation technology for treatment of gasoline-contaminated soil [Crossref]
- 2009 - Review of technologies for oil and gas produced water treatment [Crossref]
- 2014 - Treatment of synthetic soil washing solutions containing phenanthrene and cyclodextrin by electro-oxidation. Influence of anode materials on toxicity removal and biodegradability enhancement [Crossref]
- 2011 - Treatment technologies for petroleum refinery effluents: a review