title: Performance of up-flow anaerobic fixed bed reactor of the treatment of sugar beet pulp lixiviation in a thermophilic range.
abstract: The acclimatization and performance study of lixiviation of sugar beet pulp are carried out in upflow anaerobic fixed bed reactor in thermophilic range of temperature (55°C). Several hydraulic retention time is conducted (11, 8, 6, 4, 2, and 1.5 days). The performance study showed that Chemical Oxygen Demand removal efficiency is 90% for 6 days-HRT. While COD removal efficiency was reduced within the range of 74.3% and 59.4% in others HRT. Organic loading rates greater than 10 kg COD/m(3)d in influent, (2 days-HRT), produces a destabilization of the process due to total acidity accumulation in reactors although is the HRT with highest methane production. The results showed that an increase in OLR was directly correlated with active biomass inside reactor but not with the amount in microbial community. The bacterial concentration inside the reactor is strongly influenced by the content of microorganisms in the lixiviation of sugar beet pulp.
authors.affiliation: Department of Environmental Technologies, University of Cádiz, Spain. Electronic address: rocio.montanes@uca.es.
authors.forename: Rocío
authors.initials: R
authors.lastname: Montañés Alonso
authors.affiliation: Department of Environmental Technologies, University of Cádiz, Spain. Electronic address: montserrat.perez@uca.es.
authors.forename: Montserrat
authors.initials: M
authors.lastname: Pérez García
authors.affiliation: Department of Environmental Technologies, University of Cádiz, Spain.
authors.forename: Rosario
authors.initials: R
authors.lastname: Solera del Río
mesh_terms: D000693:Anaerobiosis; D001419:Bacteria / Q000254:growth & development; D027461:Beta vulgaris / Q000737:chemistry*; D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors / Q000382:microbiology*; D001709:Biotechnology / Q000295:instrumentation* / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D008697:Methane / Q000378:metabolism; D013696:Temperature; D014835:Volatilization; D014865:Waste Disposal, Fluid
chemical_list: D056804:Biofuels; D008697:Methane
keywords: Anaerobic digestion; Methane yield; Population dynamic; Sugar beet pulp; Upflow anaerobic fixed bed reactor (AUF)