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Upgrading dry acid pretreatment by post-hydrolysis for carbon efficient conversion of lignocellulose.
- Source :
-
Bioresource Technology . Feb2024, Vol. 394, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- • Upgrading DAP by post-hydrolysis for carbon efficient conversion of lignocellulose. • A radar chart method was used for the comprehensive evaluation of DAP performance. • One-pot post-hydrolysis and SSF without detoxification and sterilization. • Preserved 45.2 % of original β-O-4 linkages in fractionated lignin. • 66 % of lignocellulose carbon was recovered as ethanol, xylose and reactive lignin. Dry acid pretreatment (DAP) as a promising process for industrial biorefinery provide an efficient bioconversion of cellulose without free wastewater, although the partial xylan and lignin degrade to inhibitors or recondense. A biorefinery strategy for carbon efficient conversion of lignocellulose into bioethanol, xylose, and reactive lignin was developed by upgrading DAP with post-hydrolysis. The results showed that lignocellulose after mild DAP (175 °C, acid dosage of 15 mg/g dry material) obtained higher xylan recovery and lower inhibitors than that of general DAP. Subsequently, post-hydrolysis, simultaneous saccharification and ethanol fermentation were performed at solids loading of 20 wt% without detoxification and sterilization, resulting in xylose and ethanol yield of 71.8 % and 67.6 %. The fractionated lignin presented more reactive β-aryl ether linkages and less condensation than that from DAP. 66 % of lignocellulose carbon was recovered as ethanol, xylose and reactive lignin. This upgrading biorefinery strategy provided an easy-to-operate process for integrated utilization of lignocellulose. [ABSTRACT FROM AUTHOR]
- Subjects :
- *XYLANS
*LIGNOCELLULOSE
*LIGNINS
*MANUFACTURING processes
*CARBON
*BIOCONVERSION
Subjects
Details
- Language :
- English
- ISSN :
- 09608524
- Volume :
- 394
- Database :
- Academic Search Index
- Journal :
- Bioresource Technology
- Publication Type :
- Academic Journal
- Accession number :
- 175138014
- Full Text :
- https://doi.org/10.1016/j.biortech.2023.130261