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Volume 6, Issue 6 (Suppl)
J Geol Geophys, an open access journal
ISSN: 2381-8719
Soil Science 2017
December 04-05 2017
Page 35
conference
series
.com
December 04-05, 2017 | Madrid, Spain
Annual Congress on
SOIL SCIENCES
Emmanuel Mousset, J Geol Geophys 2017, 6:6(Suppl)
DOI: 10.4172/2381-8719-C1-013
Advanced electrochemical treatments for soil remediation
Statement of the Problem:
The remediation of polluted soil and sites is a major of concern not only for the consequence on
the ecosystem but also for the contamination of groundwater as resource of drinking water. In this context, many studies
have been devoted to find the most cost-efficient solution for soil remediation. Most of the organic pollution is composed
of aliphatic hydrocarbons and polycyclic aromatic hydrocarbons (HAPs) but most of them are not biodegradable, which
make not efficient enough the biological treatment. Physical techniques only contain the pollution but does not eliminate it
while thermal treatment still remain expensive and denature the soil composition. Chemical oxidation methods have been
proposed as well, but the addition of oxidants into the soil make the technique uncertain regarding the degradation yield and
the hazardous oxidation by-products that can be formed
.
Methodology & Theoretical Orientation:
Soil washing (SW) and soil flushing (SF) technology using agents to extract and
solubilize the pollutants have emerged and have shown promising results. Since these methods only transfer the pollution
from soil matrix to liquid matrix, a post-treatment is required. The combination of SW/SF with electrochemical advanced
oxidation process (EAOP) have been therefore proposed. EAOP have the advantage to not require the addition of oxidant that
are produced continuously and in situ through electrochemical reactions.
Findings:
Three major insights emanate from this combination: the surfactant structure has an importance in the pollutant
degradation efficiency and the reusability of the washing agent, the integrated process can be performed at neutral pH and
without addition of iron source for Fenton reaction, and the biodegradability enhancement with electrolysis time of SW/SF
solutions.
Conclusion & Significance:
These results gave new possibility of soil remediation by minimizing the use of reagent and by
maximizing the pollutants degradation rates and yields.
Recent Publications
1. E Mousset, N Oturan, E D van Hullebusch, G Guibaud, G Esposito and M A Oturan (2013) A new micelle-based
method to quantify the Tween 80® surfactant for soil remediation. Agronomy for Sustainable Development 33:839–
846.
2. E Mousset, M A Oturan, E D Van Hullebusch, G Guibaud and G Esposito (2014) Soil washing/flushing treatments
of organic pollutants enhanced by cyclodextrins and integrated treatments: state of the art. Critical Reviews in
Environmental Science and Technology44:705–795.
3. E Mousset, N Oturan, E D van Hullebusch, G Guibaud, G Esposito and M A Oturan (2014) Influence of solubilizing
agents (cyclodextrin or surfactant) on phenanthrene degradation by electro-Fenton process – Study of soil washing
recycling possibilities and environmental impact. Water Research 48:306–316.
4. E Mousset, N Oturan, E D van Hullebusch, G Guibaud, G Esposito and M A Oturan (2014) Treatment of synthetic
soil washing solutions containing phenanthrene and cyclodextrin by electro-oxidation. Influence of anode materials
on toxicity removal and biodegradability enhancement Applied Catalysis B: Environmental. 160–161:666–675.
Emmanuel Mousset
Universite de Lorraine, France