Comparison of different carbon sources for ground water denitrification

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DOIResolve DOI: http://doi.org/10.1080/09593330.2004.9619397
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TypeArticle
Journal titleEnvironmental Technology
ISSN0959-3330
Volume25
Issue9
Pages10411049; # of pages: 9
SubjectAcetates; bacteria; biodegradation, environmental; colony count, microbial; ethanol; fresh water; nitrates; soil pollutants; sucrose; time factors; water pollutants, chemical; water purification; water
AbstractThis study presents a comparison of denitrification rates and denitrification stoichiometry when using different sources of carbon. Denitrification tests were carried out in test bottles containing water and soil samples acquired at a nitrate-contaminated site and supplemented with either sucrose, acetate or ethanol. The tests demonstrated nitrate removal in all carbon source supplemented bottles. The rate of denitrification and the required amount of a carbon source, however, depended on the choice of substrate. Ethanol and acetate were found to provide the highest denitrification rate, that of 1.4 - 1.6 mg-N I⁻¹ d⁻¹. Sucrose-supplemented bottles demonstrated a significantly slower denitrification rate, that of 0.6 - 0.9 mg-N I⁻¹ d⁻¹. In addition to slow denitrification rates, sucrose-supported denitrification required more carbon source.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; NRC Biotechnology Research Institute
Peer reviewedNo
Identifier10470232
NRC number47191
NPARC number12338516
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Record identifierf42cdbba-b018-4434-b48e-43149b6df823
Record created2009-09-10
Record modified2016-05-09
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