Determination of optimal sulfate concentration for methane production from volatile fatty acids

Conference · Tue Dec 31 00:00:00 EST 1996

OSTI ID:416372

Demafelis, R B; Tomita, Osamu; Kajiuchi, Toshio ^[1]

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1. Tokyo Inst. of Technology, Yokohama (Japan)

The effect of sulfate on methane production from individual volatile fatty acids were investigated using batch cultures. Optimum sulfate concentrations were found to be at 220mg/l for propionate digestion and 55mg/l for butyrate and valerate digestions. Methane productions were significantly increased at these conditions compared to cultures containing no sulfates. Hydrogen sulfide levels, at optimum sulfate concentration were relatively low up to 0.7 % in the gas phase. Sulfate reducing bacteria (SRB) predominates the bacterial population while Methanosaeta concilii outnumbered Methanospirillium hungatei. 7 refs., 3 figs.

• OSTI ID: 416372
• Report Number(s): CONF-960730-; TRN: 96:006486-0008
• Resource Relation: Conference: 5. world congress of chemical engineering, San Diego, CA (United States), 14-18 Jul 1996; Other Information: PBD: 1996; Related Information: Is Part Of The 5th World Congress of chemical engineering: Technologies critical to a changing World. Volume II: Agriculture, food biotechnology biomedical electric power process safety; PB: 1140 p.
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
METHANE
CHEMICAL REACTION YIELD
CARBOXYLIC ACIDS
ANAEROBIC DIGESTION
SULFATES
CONCENTRATION RATIO
SULFATE-REDUCING BACTERIA