Predicting the biodegradation of target hydrocarbons in the presence of mixed contaminants in soil

Jacqueline L. Stroud, Graeme I. Paton, Kirk T. Semple

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The aim of this study was to investigate the prediction of C-14-phenanthrene and C-14-hexadecane biodegradation in the presence of other hydrocarbons in soil using beta- and alpha-cyclodextrin (CD) solutions, respectively. Prediction of the biodegradation of C-14-phenanthrene using the P-CD extraction was robust under single, co-contaminant and multiple contaminant conditions (r(2) = 0.92, slope of best fit line = 0.87, intercept = 7.24, n = 84). Prediction of C-14-hexadecane using the alpha-CD extraction was robust under single and co-contaminant conditions (r(2) = 0.92, slope of best fit line=0.97, intercept=1.24, n = 60); however, the alpha-CD could not accurately predict C-14-hexadecane biodegradation in the presence of multiple contaminants. The presence of multiple contaminants enhanced C-14-hexadecane mineralisation, but did not enhance extractability. The results from this study provide further evidence for the application of HPCD extractions for the measurement of microbial accessibility in soil. (C) 2008 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)563-567
Number of pages5
JournalChemosphere
Volume74
Issue number4
Early online date13 Nov 2008
DOIs
Publication statusPublished - Jan 2009

Keywords

  • biodegradation
  • hexadecane
  • phenanthrene
  • HP-alpha-CD
  • HP-beta-CD
  • cyclodextrin extraction technique
  • hydroxypropyl-beta-cyclodextrin
  • microbial availability
  • organic contaminants
  • PAH bioavailability
  • mineralization
  • pollutants
  • sediments
  • pyrene

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