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REGO, G. C. Hydrogen production in mesophilic anaerobic fluidized bed from different organic substrates sugar industry. 2016. 118 p. Dissertation (Master in Hydraulic Engineering and Sanitation) School of Engineering of São Carlos, University of São Paulo, São Carlos, 2016. This study aimed to evaluate the production of H2 from different organic substrates sugar industry, like juice, molasses and vinasse from cane sugar, including sucrose as a source of synthetic carbon. four anaerobic fluidized bed were used, mesophilic broth reactor (RMC), mesophilic molasses reactor (RMM), reactor mesophilic sucrose (RMS) and reactor mesophilic vinasse (RMV) maintained at mesophilic condition (30 ° C) and at initial concentrations feed substrate 5 gCOD. L. The pH of the reactor was kept between 4 and 5, the hydraulic detention time (HDT) used were 8, 6, 4, 2 and 1 h and the inoculation through a sludge from a poultry slaughterhouse, which underwent heat treatment. In MRC H2 yield (HY) maximum obtained was 1.2 mol H2. mol sucrose , occurred in HRT of 8 h. The reactor (RMM) showed a better substrate consumption reaching a HY 1.4 mol H2. mol -1 sucrose, HDT observed in 4 h. RMS presented the best HY compared to other reactors reaching 3.3 mol H2. mol -1 sucrose in HRT of 6 h. The best volumetric H2 production (PVH) obtained was observed in the RMS where the TDH 2 h the reactor reached 11 L H2. L . d. RMV that used vinasse which has undergone physical-chemical treatment by adding calcium oxide, showed no H2 production. Among the main products soluble metabolites observed in the reactors during operation predominated in acetic acid concentrations, butyric, isobutyric, propionic, and succinic in RMM. In MRC were observed higher concentrations of acetic, butyric, lactic and propionic acid. RMV showed predominantly acetic, succinic, propionic and butyric acid. RMS higher concentrations were propionic acid, acetic, isobutyric, butyric acid and ethanol.

Produção de hidrogênio em reatores anaeróbios de leito fluidificado mesofílico a partir de diferentes substratos orgânicos da indústria sucroalcooleira