Abstract：
:Anaerobic fermentation generates propionic acid, which inhibits microbial growth and accumulates in wastewater containing increased amounts of organic matter. We therefore isolated a propionic acid-assimilating bacterium that could produce triacylglycerol, for use in wastewater treatment. Nitratireductor sp. strain OM-1 can proliferate in medium containing propionic, acetic, butyric, and valeric acids as well as glycerol, and produces triacylglycerol when both propionic and acetic acids or glycerol are present. In composite model wastewater containing acetic acid, propionic acid and glycerol, this strain shows an even higher conversion rate, suggesting that it is suitable for wastewater treatment. Further, nitrogen depletion in medium containing an acetic-propionic acid mixture resulted in the production of the light oil 2-butenoic acid 1-methylethyl ester, but not triacylglycerol. Collectively, our data indicate that strain OM-1 has the potential to reduce accumulation of activated sludge in wastewater treatment and may contribute to the production of biodiesel.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Okamura Y,Nakai S,Ohkawachi M,Suemitsu M,Takahashi H,Aki T,Matsumura Y,Tajima T,Nakashimada Y,Matsumoto Mdoi
10.1016/j.biortech.2015.11.040subject
Has Abstractpub_date
2016-02-01 00:00:00pages
215-21eissn
0960-8524issn
1873-2976pii
S0960-8524(15)01566-7journal_volume
201pub_type
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