COMBINED TREATMENT OF VINASSE BY AN UPFLOW ANAEROBIC FILTER-REACTOR AND OZONATION PROCESS
AUTOR(ES)
Cabrera-Díaz, A., Pereda-Reyes, I., Dueñas-Moreno, J., Véliz-Lorenzo, E., Díaz-Marrero, M. A., Menéndez-Gutiérrez, C. L., Oliva-Merencio, D., Zaiat, M.
FONTE
Braz. J. Chem. Eng.
DATA DE PUBLICAÇÃO
2016-12
RESUMO
Abstract The aim of the present study was to evaluate the efficacy of treating vinasse using anaerobic digestion (AD) followed by ozonation. The AD process was performed using a laboratory-scale upflow anaerobic filter reactor (UAFR) under continuous operation at 29 ± 1 °C. Stable conditions were reached at 10 kgCOD m-3 d-1 and a hydraulic retention time (HRT) of 5 days. Under these conditions, the efficiency of reduction of the chemical oxygen demand (COD) and the methane yield were 75.1% and 0.315 m3CH4 kgCODr-1, respectively. The anaerobically digested effluent was further treated using ozone in a bubbling column. An experimental 23 array [C(03)g= 70; 100 mgO3 L-1; pH= 7.5; 10; tc = 1 and 3 h] was used. The best conditions for effluent ozonation were 100 mgO3 L-1, pH 7.5 and 3 hours of contact with ozone. The average efficiencies for COD, color and turbidity reduction were 82.4, 93.8 and 99.3%, respectively.
Documentos Relacionados
- Layered structure of bacterial aggregates produced in an upflow anaerobic sludge bed and filter reactor.
- Methanogenesis in an Upflow Anaerobic Sludge Blanket Reactor at pH 6 on an Acetate-Propionate Mixture
- Population Changes of Eubacteria, Sulfate-Reducing Bacteria and Methanogenic Archaea in an Anaerobic Reactor Processing Ethanol Distillery Vinasse
- Biomethane production from vinasse in upflow anaerobic sludge blanket reactors inoculated with granular sludge
- Effects of hydrogen and formate on the degradation of propionate and butyrate in thermophilic granules from an upflow anaerobic sludge blanket reactor.