Fate of 14C-labeled anthracene and hexadecane in compost-manured soil

Applied Microbiology and Biotechnology
M KästnerB Mahro

Abstract

Experiments were carried out to evaluate the impact of the addition of ripe compost on the degradation of two 14C-labeled hydrocarbon model compounds (anthracene and hexadecane) in soil. The addition of mature compost (20% dry wt./dry wt) stimulated significantly the disappearance of the extractable fraction of both compounds. With compost, 23% of the labeled anthracene was transformed into 14CO2 and 42% was fixed to the soil matrix irreversibly. In the unsupplemented control reactor, more than 88% of the original anthracene could be recovered by either of two organic extraction procedures. THe formation of non-extractable bound residues was significantly less with 14C-hexadecane since only 21% of the labeled carbon had become non-extractable after 103 days. The results presented show that compost could stimulate the depletion of hydrocarbons by either mineralization or the formation of unextractable bound residues (humification). The latter process might be a significant route of depletion in soil especially, for those hydrocarbons that are mineralized only slowly. The meaning of this finding for the assessment of soil bioremediation is discussed.

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Citations

Oct 17, 2001·Environmental Science and Pollution Research International·P E OlsonP R Philp
Nov 15, 2005·Biodegradation·Andreas HaderleinBruce A Ramsay
Feb 28, 2004·Chemosphere·Carine SaisonMichel Schiavon
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Aug 28, 2003·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·S Barathi, N Vasudevan
Jul 29, 2015·Applied Microbiology and Biotechnology·Iris K U AdamMatthias Kästner
Jun 27, 2003·Environmental Pollution·Kristin Van GestelJaak Ryckeboer
Jun 7, 2006·Ecotoxicology and Environmental Safety·Christophe PagnoutJean-François Férard
Jan 5, 2017·AMB Express·Iris K U AdamMatthias Kästner
May 1, 1999·Applied and Environmental Microbiology·M KästnerW Fritsche
Jun 15, 2005·Environmental Science & Technology·Kieron J DoickKirk T Semple
Jul 29, 2005·Environmental Science & Technology·Stefanie KohlmeierLukas Y Wick

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