Thermophilic hydrogen production from sugarcane bagasse pretreated by steam explosion and alkaline delignification

Author(s)

Ratti, Regiane Priscila ^[1] ; Delforno, Tiago Palladino ^[1] ; Sakamoto, Isabel Kimiko ^[1] ; Amancio Varesche, Maria Bernadete ^[1]

Affiliation

^[1] Univ Sao Paulo, BR-13563120 Sao Carlos, SP - Brazil

• Document type: Review article
• Source: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 40, n. 19, p. 6296-6306, MAY 25 2015.
• Web of Science Citations: 15

Abstract

H-2-production was evaluated using a microbial consortium from sugarcane bagasse in natura (SCBn) to ferment cellulose from pretreated SCB (SCBp; steam explosion and delignification alkaline). Six batch assays were performed: (1) 0.5 g/l SCBn + 0.5 g/l SCBp; (2) 2.0 g/l SCBn + 2.0 g/l SCBp; (3) 0.5 g/l SCBn + 0.5 g/l glucose; (4) 2.0 g/l SCBn + 2.0 g/l glucose; (5) 0.5 g/l SCBn; (6) 2.0 g/l SCBn. H-2-production was verified in all assays; however, the SCBp influenced the H2-production, since that was verified a higher production. The higher H-2-yield was in assay 1 (1.2 mol H-2/g substrate). The metabolites produced were ethanol and acetic, butyric, iso-butyric, lactic and propionic acids. In assays 1, 2, 5 and 6, the H-2-production occurred primarily via acetic acid. In assays 3 and 4, the main metabolite was butyric acid. Microorganisms identified were grouped into distinct phyla: Firmicutes, Bacteroidetes and Actinobacteria, with a predominance of genera Clostridium and Tepidimicrobium that produce cellulolytic enzymes favoring the H-2-production from SCB. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 10/01237-6 - Hydrolisis of sugar cane bagasse for hydrogen production in thermophilic condition
• Grantee: Regiane Priscila Ratti Sartori
• Support Opportunities: Scholarships in Brazil - Post-Doctoral