2010
DOI: 10.1590/s1413-41522010000300011
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Efeito do bicarbonato de sódio no tratamento de vinhaça em AnSBBR operado a 55 e 35ºC

Abstract: Avaliou-se a influência do bicarbonato de sódio (NaHCO3) no desempenho do reator anaeróbio batelada sequencial com biomassa imobilizada tratando vinhaça a 55 e a 35ºC. O reator foi preenchido com espuma de poliuretano e agitado a 300 rpm. A adaptação a 55ºC estendeu-se por 50 dias, tendo o reator sido alimentado com vinhaça (DQO de 0,3 a 1,0 g/L). Para a operação a 35ºC, procedeu-se inicialmente ao enriquecimento da população metanogênica, durante 21 dias, com substrato à base de etanol (2,5 gDQO/L). Posterior… Show more

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Cited by 21 publications
(11 citation statements)
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“…The increase in soil pH induced by adding vinasse occurs because OM contained in this residue has a good reducing potential (Britto et al, 2009); when reacting in the soil, it can increase the pH by neutralizing the proton H + in the soil solution. Biodigested vinasse concentrate had a lower OM concentration compared with CV, but its pH was approximately 8.0 once NaOH was added to the original vinasse to improve conditions and optimize the biological process of methane production (Döll and Forest, 2010), which certainly contributed to increasing soil pH.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The increase in soil pH induced by adding vinasse occurs because OM contained in this residue has a good reducing potential (Britto et al, 2009); when reacting in the soil, it can increase the pH by neutralizing the proton H + in the soil solution. Biodigested vinasse concentrate had a lower OM concentration compared with CV, but its pH was approximately 8.0 once NaOH was added to the original vinasse to improve conditions and optimize the biological process of methane production (Döll and Forest, 2010), which certainly contributed to increasing soil pH.…”
Section: Resultsmentioning
confidence: 99%
“…The first change occurs by adding alkaline compounds to raise pH to optimize the biological process of methane production (Döll and Forest, 2010). Biodigested vinasse is an alkaline product.…”
Section: Introductionmentioning
confidence: 99%
“…The blank of the inoculum (AIS) was made to evaluate the endogenous decay, i.e., the degradation of the inoculum organic matter, which was subtracted from the above-cited configurations to obtain the net methane production rate of the FW. The dose of the sodium bicarbonate buffer considered the proportion of 0.2 g of HCO 3 g -1 COD waste , recommended by Döll & Foresti (2010).…”
Section: Methodsmentioning
confidence: 99%
“…Possibilidade de aplicação a diversos tipos de águas residuárias, tanto em condições de temperatura mesofílica (35 o C), como termofílica (55°C) (DÖLL e FORESTI, 2010).…”
Section: Introductionunclassified