NDLI: Fate of the herbicides mecoprop, dichlorprop, and 2,4-D in aerobic and anaerobic sewage sludge as determined by laboratory batch studies and enantiomer-specific analysis

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Fate of the herbicides mecoprop, dichlorprop, and 2,4-D in aerobic and anaerobic sewage sludge as determined by laboratory batch studies and enantiomer-specific analysis

Content Provider	Semantic Scholar
Author	Zipper, Christian Bolliger, C. Fleischmann, Thomas Suter, Marc J.-F. Angst, Werner Müller, Markus Kohler, Hans-Peter E.
Copyright Year	2004
Abstract	Aerobic degradation experiments with the racemic mixtures of mecoprop and dichlorprop revealed that activated sludge collected from the aeration tank of a municipal waste water treatment plant degraded both enantiomers of mecoprop and dichlorprop within 7 days, albeit in an enantioselective manner; the (S) enantiomers were preferentially degraded. Mecoprop, dichlorprop, and 2,4-D were completely metabolized under aerobic conditions, as shown by the 86–98% elimination of dissolved organic carbon. Under anaerobic conditions, the concentration of 2,4-D decreased exponentially with a first-order reaction rate constant of 0.24 per day and without a lag-phase. After an incubation time of 17 days, 2,4-D was completely removed. 2,4-Dichlorophenol was the main metabolite of anaerobic 2,4-D degradation; only traces of 4-chlorophenol were detected. In contrast, the chiral phenoxypropionic acid herbicides mecoprop and dichlorprop persisted under anaerobic conditions during 49 days of incubation.
Starting Page	271
Ending Page	278
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1023/A:1008396022622
Alternate Webpage(s)	https://www.dora.lib4ri.ch/eawag/islandora/object/eawag:3923/datastream/PDF/Zipper-1999-Fate_of_the_herbicides_mecoprop,-(published_version).pdf
PubMed reference number	10633543
Alternate Webpage(s)	https://doi.org/10.1023/A%3A1008396022622
Journal	Medline
Volume Number	10
Journal	Biodegradation
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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