Influence of carbon source and inoculum type on anaerobic biomass adhesion on polyurethane foam in reactors fed with acid mine drainage

Autor(es)

Rodriguez, Renata P. ^[1] ; Zaiat, Marcelo ^[2]

Afiliação do(s) autor(es)

^[1] UNIFAL, ICT, BR-37715400 Pocos De Caldas, MG - Brazil

^[2] Univ Sao Paulo, EESC, Dept Hidraul & Saneamento, LPB, BR-13563120 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Bioresource Technology; v. 102, n. 8, p. 5060-5065, APR 2011.
• Citações Web of Science: 7

Resumo

This paper analyzes the influence of carbon source and inoculum origin on the dynamics of biomass adhesion to an inert support in anaerobic reactors fed with acid mine drainage. Formic acid, lactic acid and ethanol were used as carbon sources. Two different inocula were evaluated: one taken from an UASB reactor and other from the sediment of a uranium mine. The values of average colonization rates and the maximum biomass concentration (C(max)) were inversely proportional to the number of carbon atoms in each substrate. The highest C(max) value (0.35 g TVS g(-1) foam) was observed with formic acid and anaerobic sludge as inoculum. Maximum colonization rates (v(max)) were strongly influenced by the type of inoculum when ethanol and lactic acid were used. For both carbon sources, the use of mine sediment as inoculum resulted in a v(max) of 0.013 g TVS g(-1) foam day(-1), whereas 0.024 g TVS g(-1) foam day(-1) was achieved with anaerobic sludge. (C) 2011 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 08/00388-0 - Remoção de sulfato de águas residuárias ácidas em reatores anaeróbios
• Beneficiário: Marcelo Zaiat
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 06/06122-7 - Aplicacao de reatores anaerobios para remocao de sulfato de aguas de drenagem acida de minas.
• Beneficiário: Renata Piacentini Rodriguez
• Modalidade de apoio: Bolsas no Brasil - Doutorado