NDLI: Effect of humic deposit (leonardite) on degradation of semi-volatile and heavy hydrocarbons and soil quality in crude-oil-contaminated soil

Content Provider	Springer Nature Link
Author	Turgay, Oguz Can Erdogan, Esin Eraydın Karaca, Ayten
Copyright Year	2009
Abstract	In order to investigate the bioremedial potential of humic deposit (leonardite), the effects of the treatments of leonardite and a commercial bioaugmentation agent on the degradation of a variety of petroleum hydrocarbons (C13–C31) and soil enzyme activities (urease acid-alkaline phosphatase and dehydrogenase) were tested within a soil incubation experiment lasting 120 days. Experimentally crude-oil-contaminated soil (2.5%) was regulated to a C:N:P ratio (100:15:1; Oilcon), amended with 5% of leonardite and regulated to the same C:N:P ratio (Oilcon-L) or mixed with a commercial bioaugmentation product (Oilcon-B), respectively. In the short period of incubation (60 days), Oilcon and Oilcon-B treatments showed higher hydrocarbon degradations, whereas Oilcon-L showed higher hydrocarbon degradation over Oilcon and Oilcon-B treatments in the long-term (120 days). Applying contaminated soil with leonardite increased urease (LSD, 4.978, P < 0.05) and dehydrogenase (LSD, 0.660, P < 0.05) activities. However, acid and alkaline phosphatase activities showed no certain inclination between different treatments. Dehydrogenase seemed to be more related to hydrocarbon degradation process. Overall results showed that leonardite enhanced biodegradation of petroleum hydrocarbons and also stimulated soil ecological quality measured as soil enzyme activities.
Starting Page	45
Ending Page	58
Page Count	14
File Format	PDF
ISSN	01676369
Journal	Environmental Monitoring and Assessment
Volume Number	170
Issue Number	1-4
e-ISSN	15732959
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-11-04
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Humic substances Leonardite Biostimulation Hydrocarbon degradation Soil enzyme activities Ecology Atmospheric Protection/Air Quality Control/Air Pollution Environmental Management Ecotoxicology Environmental Monitoring/Analysis
Content Type	Text
Resource Type	Article
Subject	Pollution Medicine Management, Monitoring, Policy and Law

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