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

Brazilian Archives of Biology and Technology

Maria Magdalena Ferreira Ribas²  Fabio Alexandre Chinalia¹  Eloisa Pozzi¹  Eugenio Foresti¹ 

[1] ,Universidade Estadual de MaringáCidade Gaúcha PR ,Brasil

关键词: anaerobic digestion;    adaptation phase;    wastewater;    sugar cane;    biofilm;    microbiology;   

DOI  :  10.1590/S1516-89132009000400028

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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