Reduce recalcitrance of cornstalk using post-hydrothermal liquefaction wastewater pretreatment.
Bioresour Technol
; 279: 57-66, 2019 May.
Article
em En
| MEDLINE
| ID: mdl-30711753
ABSTRACT
Hydrothermal pretreatment (HTP) using an acidic catalyst is known to be effective for reducing lignocellulosic biomass recalcitrance. Post-hydrothermal liquefaction wastewater (PHW) from hydrothermal liquefaction of swine manure contains a large fraction of organic acids and thus was introduced to improve the HTP of cornstalk in this study. The response surface methodology was performed to optimize operating parameters of HTP for preserving structural polysaccharides while removing the barrier substances. A remarkable co-extraction of cell wall polymers was observed during PHW-catalyzed HTP at 172⯰C for 88â¯min. The analysis of particle size, crystalline cellulose, the degree of polymerization (DP), mole number (MN) and SEM suggested that the co-extraction effect could distinctively alter lignocellulosic structures associated with recalcitrance and thus accelerate biomass saccharification. Additionally, the biodegradability of PHW was improved after HTP as a result of balanced nutrients and increased acids and sugars suitable for biogas production via anaerobic fermentation.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Biomassa
/
Zea mays
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Águas Residuárias
Limite:
Animals
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article