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Economic process to produce biohydrogen and volatile fatty acids by a mixed culture using vinasse from sugarcane ethanol industry as nutrient source.

Sydney, Eduardo Bittencourt; Larroche, Christian; Novak, Alessandra Cristine; Nouaille, Regis; Sarma, Saurabh Jyoti; Brar, Satinder Kaur; Letti, Luiz Alberto Junior; Soccol, Vanete Thomaz; Soccol, Carlos Ricardo (2014). Economic process to produce biohydrogen and volatile fatty acids by a mixed culture using vinasse from sugarcane ethanol industry as nutrient source. Bioresource Technology , vol. 159 . p. 380-386. DOI: 10.1016/j.biortech.2014.02.042.

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Résumé

This work evaluates the potential of vinasse (a waste obtained at the bottom of sugarcane ethanol distillation columns) as nutrient source for biohydrogen and volatile fatty acids production by means of anaerobic consortia. Two different media were proposed, using sugarcane juice or molasses as carbon source. The consortium LPBAH1 was selected for fermentation of vinasse supplemented with sugarcane juice, resulting in a higher H₂ yield of 7.14 molH₂ molsucrose⁻¹ and hydrogen content in biogas of approx. 31%, while consortium LPBAH2 resulted in 3.66 molH2/molsucrose and 32.7% hydrogen content in biogas. The proposed process showed a rational and economical use for vinasse, a mandatory byproduct of the renewable Brazilian energy matrix.

Type de document: Article
Mots-clés libres: biohydrogen; molasses; sugarcane; vinasse; volatile fatty acids
Centre: Centre Eau Terre Environnement
Date de dépôt: 11 avr. 2018 17:43
Dernière modification: 11 avr. 2018 17:43
URI: http://espace.inrs.ca/id/eprint/3685

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