Bioprocess Engineering and Biotechnology Department, Federal University of Parana, Centro Politécnico, Usina Piloto B, CEP 81531-990 Curitiba, Paraná, Brazil; Clermont Université, Université Blaise Pascal, Labex IMobS3, Institut Pascal, Polytech Clermont-Ferrand, 24 avenue des Landais, BP 20206, 63174 Aubière Cedex, France.
Clermont Université, Université Blaise Pascal, Labex IMobS3, Institut Pascal, Polytech Clermont-Ferrand, 24 avenue des Landais, BP 20206, 63174 Aubière Cedex, France.
Bioresour Technol. 2014 May;159:380-6. doi: 10.1016/j.biortech.2014.02.042. Epub 2014 Feb 20.
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.
本工作评估了酒糟（甘蔗乙醇蒸馏塔底部获得的一种废物）作为厌氧菌群生产生物氢和挥发性脂肪酸的营养源的潜力。提出了两种不同的培养基，使用甘蔗汁或糖蜜作为碳源。选择 LPBAH1 菌群发酵添加甘蔗汁的酒糟，得到了更高的氢气产率，为 7.14 molH2 molsucrose(-1)，沼气中氢气含量约为 31%，而 LPBAH2 菌群发酵得到的氢气产率为 3.66 molH2/molsucrose，沼气中氢气含量为 32.7%。所提出的工艺对酒糟进行了合理且经济的利用，酒糟是可再生巴西能源矩阵的强制性副产物。
