Bioconversion of waste office paper to hydrogen using pretreated rumen fluid inoculum.
Bioprocess Biosyst Eng
; 39(12): 1887-1897, 2016 Dec.
Article
em En
| MEDLINE
| ID: mdl-27497980
In this study, a microbial consortium from an acid-treated rumen fluid was used to improve the yields of H2 production from paper residues in batch reactors. The anaerobic batch reactors, which contained paper and cellulose, were operated under three conditions: (1) 0.5 g paper/L, (2) 2 g paper/L, and (3) 4 g paper/L. Cellulase was added to promote the hydrolysis of paper to soluble sugars. The H2 yields were 5.51, 4.65, and 3.96 mmol H2/g COD, respectively, with substrate degradation ranging from 56 to 65.4 %. Butyric acid was the primary soluble metabolite in the three reactors, but pronounced solventogenesis was detected in the reactors incubated with increased paper concentrations (2.0 and 4.0 g/L). A substantial prevalence of Clostridium acetobutylicum (99 % similarity) was observed in the acid-treated rumen fluid, which has been recognized as an efficient H2-producing strain in addition to ethanol and n-butanol which were also detected in the reactors.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Papel
/
Resíduos Sólidos
/
Celulose
/
Clostridium acetobutylicum
/
Hidrogênio
Tipo de estudo:
Risk_factors_studies
Idioma:
En
Revista:
Bioprocess Biosyst Eng
Assunto da revista:
BIOTECNOLOGIA
/
ENGENHARIA BIOMEDICA
Ano de publicação:
2016
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Alemanha