Microbial populations associated with fixed- and floating-bed reactors during a two-stage anaerobic process
Int. microbiol
; 10(4): 245-251, dic. 2007. ilus, tab
Artigo
em En
| IBECS
| ID: ibc-62538
Biblioteca responsável:
ES15.1
Localização: ES15.1 - BNCS
ABSTRACT
Microbial populations associated with methanogenic fixed- or floating-bed bioreactors used for anaerobic digestion of lignocellulosic waste were investigated. Fluorescent in situ hybridization (FISH) was used to characterize microorganisms in samples obtained from different heights in the reactors, which were operated in a semi-continuous manner (feeding and mixing once every 2 days). The FISH results showed that Methanosaeta concilii cells were most numerous at the bottom of both reactors. M. concilii cells were more abundant in the fixed-bed reactor (FXBR), which performed better than the floating-bed reactor (FLBR). Species of the Methanosarcina genera (mainly M. barkeri and M. mazei) were also observed in the FLBR but rarely in the FXBR. Methane production in each of the reactors ranged from 0.29 to 0.33 m3 CH(4)/kg COD(rem) (chemical oxygen demand removed). The removal of volatile fatty acids (VFA; 70-75 h) in the FXBR was more efficient than in the FLBR (AU)
RESUMEN
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Coleções:
Bases de dados nacionais
/
Espanha
Contexto em Saúde:
ODS3 - Meta 3.9 Reduzir as mortes por produtos químicos y contaminação do ar, água e solo
Problema de saúde:
Água, Saneamento e Higiene
Base de dados:
IBECS
Assunto principal:
Digestão de Lodos
/
Águas Residuárias
Tipo de estudo:
Fatores de risco
Idioma:
Inglês
Revista:
Int. microbiol
Ano de publicação:
2007
Tipo de documento:
Artigo
Instituição/País de afiliação:
Technical University of Munich/Germany