Microbial succession within an anaerobic sequencing batch biofilm reactor (ASBBR) treating cane vinasse at 55ºC

Autor(es)

Maria Magdalena Ferreira Ribas ^[1] ; Fabio Alexandre Chinalia ^[2] ; Eloisa Pozzi ^[3] ; Eugenio Foresti ^[4]

Afiliação do(s) autor(es)

^[1] Universidade Estadual de Maringá - Brasil

^[2] University Road. National University of Ireland - Irlanda

^[3] Universidade de São Paulo. Escola de Engenharia de São Carlos - Brasil

^[4] Universidade de São Paulo. Escola de Engenharia de São Carlos - Brasil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Archives of Biology and Technology; v. 52, n. 4, p. 1027-1036, 2009-08-00.

Resumo

The aim of this work was to investigate the anaerobic biomass formation capable of treating vinasse from the production of sugar cane alcohol, which was evolved within an anaerobic sequencing batch biofilm reactor (ASBBR) as immobilized biomass on cubes of polyurethane foam at the temperature of 55ºC. The reactor was inoculated with mesophilic granular sludge originally treating poultry slaughterhouse wastewater. The evolution of the biofilm in the polyurethane foam matrices was assessed during seven experimental phases which were thus characterized by the changes in the organic matter concentrations as COD (1.0 to 20.0 g/L). Biomass characterization proceeded with the examination of sludge samples under optical and scanning electron microscopy. The reactor showed high microbial morphological diversity along the trial. The predominance of Methanosaeta-like cells was observed up to the organic load of 2.5 gCOD/L.d. On the other hand, Methanosarcinalike microorganisms were the predominant archaeal population within the foam matrices at high organic loading ratios above 3.3 gCOD/L.d. This was suggested to be associated to a higher specific rate of acetate consumption by the later organisms. (AU)

• Processo FAPESP: 01/05489-0 - Desenvolvimento, análise, aprimoramento e otimização de reatores anaeróbios para tratamento de águas residuárias
• Beneficiário: Eugenio Foresti
• Modalidade de apoio: Auxílio à Pesquisa - Temático