Work

Evaluating Colombian Clostridium spp. strains’ hydrogen production using glycerol as substrate

Year: 2013

Type: article

Abstract: Background: The ability for hydrogen production of 13 native strains of Clostridium spp. strains isolated from Colombian soil was evaluated using glycerol substrate. Glycerol to hydrogen conversion was investigated using a batch fermentation reactor and industrial glycerol source (50 g.l -1 , pH 7.00). Results: The results were quantified regarding acids, hydrogen, biomass and solvent production. The selected strain gave good hydrogen over production output at 14.4 mmol H 2 .l -1 , productivity 0.3167 mg H 2 .h -1 l - 1 culture mediumand yield 0.1962 mol H 2 .mol -1 glycerol. A further fermentation assay a 4.0 liter batch reactor let to being 0.26 mg.l -1 .h -1 after 18 hrs of fermentation. Logistic model, Luedeking-Piret model and Luedeking-Piret modified models were used for modeling changes in cell growth, hydrogen production and substrate consumption (Correlation coefficients R 2 = 0.95 for biomass substrate, R 2 = 0.77 hydrogen production). Conclusions: Our results indicate that hydrogen production through glycerol bioconversion by native strains is possible.

Source: Electronic Journal of Biotechnology

DOI: 10.2225/vol16-issue2-fulltext-4

Authors: Lizeth Katherine Tinoco Navarro, José Mauricio Bernal, Luz Angela Torres Tacha, Dionisio Humberto Malagón, Dolly Montoya

Institutions: Universidad Nacional de Colombia, Universidad Santo Tomás

Language: English

Topic: Anaerobic Digestion and Biogas Production

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Responsible consumption and production

Open Access status: hybrid

Estimated APC paid: $2,100