Dépôt numérique
RECHERCHER

Hydrogen production from biodiesel industry waste by using a co-culture of Enterobacter aerogenes and Clostridium butyricum.

Pachapur, Vinayak Laxman, Sarma, Saurabh Jyoti, Brar, Satinder Kaur, Le Bihan, Yann, Buelna, Gerardo et Verma, Mausam P. (2017). Hydrogen production from biodiesel industry waste by using a co-culture of Enterobacter aerogenes and Clostridium butyricum. Biofuels , vol. 8 , nº 6. p. 651-662. DOI: 10.1080/17597269.2015.1122471.

Ce document n'est pas hébergé sur EspaceINRS.

Résumé

Valorization of crude glycerol (CG), a waste of biodiesel production process, was investigated for increased hydrogen production by co-culture system using Enterobacter aerogenes NRRL B-407 and Clostridium butyricum NRRL B-41122. The ability of E. aerogenes was evaluated as a replacement of expensive reducing agent to maintain anaerobic conditions for the growth of C. butyricum. The co-culture resulted in increased hydrogen production, reaching a maximum of 19.46 ± 0.95 mmol-H2/L-medium in comparison to monoculture of E. aerogenes (15.64 ± 0.47) and C. butyricum (17.44 ± 0.38) in the presence of reducing agent. The effect of inoculum ratio was investigated and hydrogen yield was 0.95 mmol-H2/mol-glycerol at 1:11 inoculum ratio with more than 85% of substrate utilization was comparable to other mixed and co-culture studies. In addition to hydrogen, value added by-products such as 1,3-propandiol, acetic acid, butyric acid and ethanol have also been produced. Co-culture indicated the possibility of valorization of CG as a stable functional consortium with higher conversion efficiency for increased hydrogen along with high value by-product production. Additionally, the study provided the evidence of medium composition controlled metabolic pathway shift during CG bioconversion. Valorization of low cost CG with efficient co-culture of hydrogen production can aid biodiesel in-house energy source.

Type de document: Article
Mots-clés libres: biodiesel crude glycerol; co-culture; hydrogen; Enterobacter aerogenes; Clostridium butyricum
Centre: Centre Eau Terre Environnement
Date de dépôt: 12 févr. 2018 21:31
Dernière modification: 20 avr. 2018 19:50
URI: https://espace.inrs.ca/id/eprint/6316

Actions (Identification requise)

Modifier la notice Modifier la notice