NDLI: Long-term assessment of natural attenuation: statistical approach on soils with aged PAH contamination

Content Provider	Springer Nature Link
Author	Ouvrard, Stéphanie Chet, Elodie Denise Masfaraud, Jean François Schwartz, Christophe
Copyright Year	2013
Abstract	Natural attenuation processes valorization for PAH-contaminated soil remediation has gained increasing interest from site owners. A misunderstanding of this method and a small amount of data available does not encourage its development. However, monitored natural attenuation (MNA) offers a valuable, cheaper and environmentally friendly alternative to more classical options such as physico-chemical treatments (e.g., chemical oxidation, thermal desorption). The present work proposes the results obtained during a long-term natural attenuation assessment of historically contaminated industrial soils under real climatic conditions. This study was performed after a 10 year natural attenuation period on 60 off-ground lysimeters filled with contaminated soils from different former industrial sites (coking industry, manufactured gas plants) whose initial concentration of PAH varied between 380 and 2,077 mg kg−1. The analysed parameters included leached water characterization, soil PAH concentrations, evaluation of vegetation cover quality and quantity. Results showed a good efficiency of the PAH dissipation and limited transfer of contaminants to the environment. It also highlighted the importance of the fine soil fractions in controlling PAH reactivity. PAH dissipation through water leaching was limited and did not present a significant risk for the environment. This PAH water concentration appeared however as a good indicator of overall dissipation rate, thereby illustrating the importance of pollutant availability in predicting its degradation potential.
Starting Page	539
Ending Page	548
Page Count	10
File Format	PDF
ISSN	09239820
Journal	Biodegradation
Volume Number	24
Issue Number	4
e-ISSN	15729729
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-01-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polycyclic aromatic hydrocarbons Natural attenuation Long-term assessment Industrial soil Lysimeters Phytoremediation Microbiology Soil Science & Conservation Geochemistry Terrestrial Pollution Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution Waste Management/Waste Technology
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Environmental Engineering Bioengineering Microbiology

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