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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 448-453Ex Situ Bioremediation of Polycyclic Aromatic...

Ex Situ Bioremediation of Polycyclic Aromatic Hydrocarbon Contaminated Soil Using a Static Aeration Biopile Process

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Abstract:

A static aeration biopile process was used to bioremediate polycyclic aromatic hydrocarbon (PAH)-contaminated soil using four different approaches for treating about 30 m³ of soil at a former oil-producing site. The four treatments investigated were as follows: (i) fertilizer plus bulking agent (FB); (ii) fertilizer, bulking agent, plus Tween 80 (FBT); (iii) fertilizer, bulking agent, Tween 80, plus fungi agent (FBTF); and (iv) fertilizer, bulking agent, bacterial inoculum, plus fungi agent (FBBF). After bioremediation for 320 days, the total amount of 16 PAHs ranged from 4.14 to 5.31 mg/kg in the final soil, removal rates ranging from 75.5% to 81.5%. The sum concentration of seven carcinogenic PAHs decreased down to 0.15 mg/kg. The values of the total toxicity equivalence concentrations for 16 PAHs ranged from 0.014 to 0.068 mg/kg. The removal rates of the 16 PAHs in these four different treatments decreased in order FBBF > FBT > FBTF > FB.

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Periodical:

Applied Mechanics and Materials (Volumes 448-453)

Pages:

498-504

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.448-453.498

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Online since:

October 2013

Authors:

Xin De Cai*, Dong Ying Wang, Hui Li, Shi Yin Li, Lai Guo Chen

Keywords:

Bioaugmentation, Biodegradation, Biostimulation, Fungi, Surfactant

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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