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Biologisk behandling av oljeförorenad jord: Abiotiska faktorers inverkan och effekter av olika uppläggningssätt på nedbrytningshastigheten.
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2015 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Biological treatment of oil contaminated soil : The effect of abiotic factors and how the soil is structured at site. (English)
Abstract [en]

The purpose of this report was to investigate how the abiotic factors (temperature, pH, nutrients, oxygen levels and water content) would affect the decomposition of oil-contaminated soil and how a variance in structured soil would affect the decomposition-rate. A minor field-study was made and soil where structured in five different ways (one was a default pile and was used as a reference). The study took place over 137 days and three samples were taken (start, middle, end) and analyzed for aromatic and aliphatic compounds. The result of this study shows that there is a significant difference between all methods for the aliphatic compounds and no significant difference for the aromatic compounds. The abiotic factors that affect decomposition vary from organism to organism, depending on what type of environment it will function the best. In this type of environment it could be necessary to change temperature interval, nutrient availability or pH to optimize the conditions for the microorganisms. The conclusion of this report is that the structured of the soil-piles will affect decomposition rate, but it is unsure how much. Further research is needed to conclude how the soil should be structured to maximize the decomposition-rate. 

Place, publisher, year, edition, pages
2015. , 19 p.
Keyword [en]
Biodegradation, microorganism, abiotic factors, ex-situ treatment.
National Category
Other Natural Sciences
URN: urn:nbn:se:umu:diva-98140OAI: diva2:782108
External cooperation
Svevia AB
Subject / course
Examensarbete i Naturgeografi för kandidatexamen
Educational program
Bachelor of Science in Biology and Earthscience
2015-01-16, 09:00 (Swedish)
Available from: 2015-01-22 Created: 2015-01-20 Last updated: 2015-01-22Bibliographically approved

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Svensson, Sofia
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Department of Ecology and Environmental Sciences
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