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Enhanced degradation of n-hexadecane in diesel fuel contaminated soil by the addition of fermented whey
Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering, Physics and Mathematics.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.ORCID iD: 0000-0002-3204-4089
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences.
2007 (English)In: Soil & sediment contamination: an international journal, ISSN 1532-0383, Vol. 16, no 2, 221-232 p.Article in journal (Refereed) Published
Abstract [en]

The objective of this work has been to investigate the possibility of using fermented whey as an organic growth supplement in order to enhance the aerobic degradation of n-hexadecane in soil. Fermented whey was added at different dosages to nutrient amended soil microcosms contaminated with 5000 mg diesel fuel kg-1 dry weight (dw). The target substance was 14C-labeled n-hexadecane, and the biodegradation was monitored by analysis of evolved 14CO2. Biodegradation curves were fitted to a three-half-order kinetics model. Enhanced biodegradation was observed in sand at 7 and 22C and in loamy sand at 22C but the effect was most pronounced in the sand soil at 22C. The addition of 6 or 60 ml fermented whey kg-1 soil dw, increased the degree of n-hexadecane biodegradation at the end of the experiment, 167 days, from 49% in the untreated sand to 60 or 67% respectively. This increase in biodegradation was characterized by an increase in the amount of substrate biodegradation by first-order kinetics despite a decrease in the first order rate constant, k1. The highest concentration of fermented whey, 60 ml kg-1, gave rise to substrate competition, diauxie, which resulted in an extended lag phase.

Place, publisher, year, edition, pages
2007. Vol. 16, no 2, 221-232 p.
Keyword [en]
Bioavailability, Bioremediation, Organic amendment, Petroleum hydrocarbons, soil
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:miun:diva-3858DOI: 10.1080/15320380601169425ISI: 000244422800006Scopus ID: 2-s2.0-33847071318Local ID: 4130OAI: oai:DiVA.org:miun-3858DiVA: diva2:28890
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2016-10-04Bibliographically approved
In thesis
1. Effects of organic amendments on the biodegradation of petroleum hydrocarbons in contaminated soil
Open this publication in new window or tab >>Effects of organic amendments on the biodegradation of petroleum hydrocarbons in contaminated soil
2006 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Sundsvall: Mittuniversitetet, 2006. 40 p.
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 12
National Category
Chemical Sciences
Identifiers
urn:nbn:se:miun:diva-8880 (URN)91-85317-28-4 (ISBN)
Public defence
(English)
Available from: 2009-05-06 Created: 2009-05-06 Last updated: 2011-05-29Bibliographically approved

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Östberg, TomasJonsson, AndersLundström, Ulla
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CiteExportLink to record
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Citation style
  • apa
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