title: Effect of sponge volume fraction on the performance of a novel fluidized bed bioreactor.
abstract: A novel fluidized bed bioreactor (FBBR) was designed by integration of anaerobic granular activated carbon and aerobic sponge reactors. This FBBR was evaluated at different sponge volume fractions for treating a synthetic wastewater. Polyester urethane sponge with cube size of 1 × 1 × 1 cm and density of 28-30 kg/m(3) with 90 cells per 25 mm was used as biomass carrier. The results indicate that the FBBR could remove more than 93% of dissolved organic carbon (DOC). The highest nutrient removal efficiencies (58.2% PO4-P and 75.4% NH4-N) were achieved at 40% sponge volume fraction. The system could provide a good condition for biomass growth (e.g. 186.2 mg biomass/g sponge). No significant different performance in specific oxygen uptake rate was observed between 30, 40, and 50% sponge volume fractions.
authors.affiliation: Faculty of Engineering and Information Technology, University of Technology, Sydney, Broadway, NSW 2007, Australia. h.ngo@uts.edu.au
authors.forename: T T
authors.initials: TT
authors.lastname: Nguyen
authors.forename: H H
authors.initials: HH
authors.lastname: Ngo
authors.forename: W S
authors.initials: WS
authors.lastname: Guo
mesh_terms: D018533:Biomass; D019149:Bioreactors / Q000382:microbiology; D002244:Carbon / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D009584:Nitrogen / Q000378:metabolism; D010084:Oxidation-Reduction; D010100:Oxygen / Q000378:metabolism; D010758:Phosphorus / Q000378:metabolism; D011091:Polyesters; D011140:Polyurethanes; D014865:Waste Disposal, Fluid / Q000295:instrumentation* / Q000379:methods; D014874:Water Pollutants, Chemical / Q000378:metabolism
chemical_list: D011091:Polyesters; D011140:Polyurethanes; D014874:Water Pollutants, Chemical; D010758:Phosphorus; D002244:Carbon; D009584:Nitrogen; D010100:Oxygen