10.6084/m9.figshare.6179525.v1 Roberta Albanez Roberta Albanez Giovanna Lovato Giovanna Lovato Suzana Maria Ratusznei Suzana Maria Ratusznei Marcelo Zaiat Marcelo Zaiat José Alberto D. Rodrigues José Alberto D. Rodrigues Feasibility of biohydrogen production by co-digestion of vinasse (sugarcane stillage) and molasses in an AnSBBR SciELO journals 2018 AnSBBR co-digestion cycle time hydrogen molasses sugarcane stillage 2018-04-25 02:45:50 Dataset https://scielo.figshare.com/articles/dataset/Feasibility_of_biohydrogen_production_by_co-digestion_of_vinasse_sugarcane_stillage_and_molasses_in_an_AnSBBR/6179525 <div><p>Abstract This work studied the feasibility of biohydrogen production by co-digestion of vinasse/molasses in an AnSBBR operated with mechanical stirring (30°C and 200 rpm). Hydrogen production by co-digestion of vinasse/sucrose was also studied to verify the performance of the process with a known co-substrate with easy degradation. The effects of influent composition (vinasse/sucrose and vinasse/molasses), influent concentration (3000 and 4000 mgCOD.L-1) and cycle time (3 and 4 h) on performance indicators were evaluated using stability, organic matter removal efficiency, molar hydrogen yield, productivity and biogas composition. The condition with vinasse/molasses in the influent that showed the best results was obtained with a 3-hour cycle time, influent concentration of 3000 mgCOD.L-1 and composition of 33% vinasse and 67% molasses. The molar productivity in this condition was 3.8 molH2.m-3.d-1 with a hydrogen molar fraction of 16% (and a methane molar fraction of 14%). A first order kinetic model was fitted efficiently to the best conditions.</p></div>