%0 Journal Article
%T Efeito do bicarbonato de s¨®dio no tratamento de vinha£¿a em AnSBBR operado a 55 e 35oC
%A D£¿ll
%A Maria Magdalena Ribas
%A Foresti
%A Eugenio
%J Engenharia Sanitaria e Ambiental
%D 2010
%I Brazilian Association of Sanitary and Environmental Engineering
%R 10.1590/S1413-41522010000300011
%X the influence of the sodium bicarbonate (nahco3) on the performance of an anaerobic sequencing batch biofilm reactor treating vinasse at 55 and 35oc was evaluated. the reactor was filled with polyurethane foam and agitated at 300 rpm. the acclimatization period at 55oc lasted 50 days, and the reactor was fed with vinasse (cod from 0.3 to 1.0 g/l). a previous enrichment of methanogenic population was provided for the reactor operated at 35oc, feeding it with an ethanol based substrate (2.5 gcod/l) during 21 days. further on, organic loading rates (olr) ranging from 0.85 to 5.70 gcod/l.d were applied to the reactor at 55oc, supplemented with 1.2 to 0.4 ghco3-/gcod. at 35oc the reactor was subjected to olr ranging from 2.85 to 36.0 gcod/l.d with 0.4 to 0.2 ghco3-/gcod. cod removal ranged from 43 to 78% at 55oc and from 75 to 85% at 35oc. alkalinity supplementation was found to be essential for process stability, but the amount required was lower at 35oc.
%K anaerobic process
%K thermophilic
%K mesophilic
%K alkalinity
%K nahco3.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1413-41522010000300011&lng=en&nrm=iso&tlng=en