High rate methane production in a UASB reactor fed with methanol and acetate

High rate biomethanation from methanol was carried out on granular sludge in an upflow anaerobic sludge blanket (UASB) reactor. Although granulation was not observed on methanol only medium, granulation occurred in mixed substrates of methanol and acetate medium, suggesting that the presence of Meth...

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Published inJournal of fermentation and bioengineering Vol. 75; no. 4; pp. 309 - 313
Main Authors Nishio, Naomichi, Silveira, Roberto Gaiger, Hamato, Kazuhiko, Nagai, Shiro
Format Journal Article
LanguageEnglish
Published Osaka Elsevier B.V 1993
Society for Fermentation and Bioengineering
Subjects
Biological and medical sciences
Biotechnology
Fundamental and applied biological sciences. Psychology
Methods. Procedures. Technologies
Microbial engineering. Fermentation and microbial culture technology
Performance evaluation
Culture medium
Methane
Activated sludge
Granulation
Biogas
Acetate
Bioreactor
Methanogenic bacteria
Methanogenesis
Production
Microorganism culture
Methanol
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Summary:High rate biomethanation from methanol was carried out on granular sludge in an upflow anaerobic sludge blanket (UASB) reactor. Although granulation was not observed on methanol only medium, granulation occurred in mixed substrates of methanol and acetate medium, suggesting that the presence of Methanothrix spp. was essential for granulation. In mixed substrates of methanol (8.0 g/ l) and acetate (1.5 g/ l), a methanol consumption rate as high as 75 g·( l-reactor) −1·d −1 with a methane production rate of ca. 30 l·( l-reactor) −1·d −1 was achieved at 9.4 d −1 of space velocity under steady operation for more than one year.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0922-338X
DOI:10.1016/0922-338X(93)90157-4