期刊
RENEWABLE ENERGY
卷 155, 期 -, 页码 1347-1354出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2020.04.055
关键词
Supercritical CO2; Enzymatic hydrolysis; Biomass; Biofuels; Severity factor
资金
- Operational Program for Competitiveness and Internationalization (PORTUGAL2020) [LISBOA-01-0145-FEDER-022059]
- Lisbon Portugal Regional Operational Program (Lisboa 2020)
- North Portugal Regional Operational Program (Norte 2020) under the Portugal 2020 Partnership Agreement, through the European Regional Development Fund (ERDF)
- Fundacao para a Ciencia e a Tecnologia (FCT, Portugal) [IF/00471/2015]
- Mexican Science and Technology Council (SEP-CONACYT) [2015-01, 254808]
- National Council for Science and Technology (CONACYT, Mexico)
- CONACYT [729]
Agave bagasse is one of the most abundant lignocellulosic residues readily available for valorization. The agave bagasse was pretreated by applying high-pressure CO2-H2O mixture at temperatures ranging from 150 to 190 degrees C for a residence time varying from 10 to 50 min. Subsequently, solid phase obtained from pretreatment was subject to enzymatic hydrolysis at high solid loadings. Under optimal conditions, the process integrating pretreatment followed by enzymatic hydrolysis yielded 75.8 mol% of the polysaccharides present in the biomass converted into oligo- or monosaccharides, providing 110.5 g/L of reducing sugars. The monosaccharides present in the obtained hydrolysate were successfully fermented into ethanol, demonstrating the feasibility of performing its biological conversion to commercial biofuels or biochemicals. Thereby, the present study has demonstrated the proof of concept of use of more sustainable high-pressure CO2-H2O pretreatment in the context of lignocellulosic residual biomass valorization based on the biochemical sugar platform. (C) 2020 Elsevier Ltd. All rights reserved.
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