RT Journal Article
T1 Effect of oxygen on the microbial activities of thermophilic anaerobic biomass
A1 Pedizzi, Chiara
A1 Regueiro Abelleira, Leticia
A1 Rodríguez Verde, Iván
A1 Lema Rodicio, Juan Manuel
A1 Carballa Arcos, Marta
K1 Acidogenesis
K1 Hydrolysis
K1 Methanogenesis
K1 Microbial community
K1 Saturation oxygen level
AB Low oxygen levels (ug O2 L-1) in anaerobic reactors are quite common and no relevant consequences are expected. On the contrary, higher concentrations could affect the process. This work aimed to study the influence of oxygen (4.3 and 8.8 mg O2 L-1, respectively) on the different microbial activities (hydrolytic, acidogenic and methanogenic) of thermophilic anaerobic biomass and on the methanogenic community structure. Batch tests in presence of oxygen were conducted using specific substrates for each biological activity and a blank (with minimum oxygen) was included. No effect of oxygen was observed on the hydrolytic and acidogenic activities. In contrast, the methane production rate decreased by 40% in alloxygenated batches and the development of active archaeal community was slower in presence of 8.8 mg O2 L-1. However, despite this sensitivity of methanogens to oxygen at saturation levels, the inhibition was reversible.
PB Elsevier
SN 0960-8524
YR 2016
FD 2016
LK http://hdl.handle.net/10347/16815
UL http://hdl.handle.net/10347/16815
LA eng
NO Pedizzi, C., Regueiro, L., Rodriguez-Verde, I., Lema, J., & Carballa, M. (2016). Effect of oxygen on the microbial activities of thermophilic anaerobic biomass. Bioresource Technology, 211, 765-768. doi: 10.1016/j.biortech.2016.03.085
NO This research was supported by the European CommunitySeventh Framework Programme under Grant Agreement nº603744 (ManureEcoMine project), by the Spanish Ministry ofEconomy and Competitiveness through CDTI (SmartGreenGas project,2014-CE224) and the Ramón y Cajal contract (RYC-2012-10397). The authors belong to the Galician Competitive ResearchGroup GRC 2013-032, programme co-funded by FEDER
DS Minerva
RD 27 abr 2026