title: Bioaugmentation for treating transient or continuous p-nitrophenol shock loads in an aerobic sequencing batch reactor.
abstract: Bioaugmentation with an enriched microbial population was applied in an aerobic sequencing batch reactor (SBR) receiving transient or continuous shock loads of p-nitrophenol (PNP). The effect of the amount of biomass added for bioaugmentation was assessed by using two different dosages (2% or 5% w/w of the total biomass in the seeded SBR). In both cases, total PNP removal was achieved during the transient PNP shock load occurring after bioaugmentation. However, after a long PNP starvation period the only experiment still showing total PNP removal during a second PNP shock load was the one where a dosage of 5% w/w was applied. The results suggested that the dosage is a key factor for the implementation of a successful bioaugmentation strategy. In addition, the performance of a bioaugmented SBR receiving a continuous PNP shock load was enhanced when compared to a non-bioaugmented SBR.
authors.affiliation: Department of Chemical Engineering, Escola d'Enginyeria. Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
authors.forename: Mariángel
authors.initials: M
authors.lastname: Martín-Hernández
authors.forename: María Eugenia
authors.initials: ME
authors.lastname: Suárez-Ojeda
authors.forename: Julián
authors.initials: J
authors.lastname: Carrera
mesh_terms: D000332:Aerobiosis; D001419:Bacteria / Q000378:metabolism; D061249:Batch Cell Culture Techniques / Q000295:instrumentation*; D001673:Biodegradation, Environmental; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology*; D017404:In Situ Hybridization, Fluorescence; D018613:Microscopy, Confocal; D009596:Nitrophenols / Q000378:metabolism*
chemical_list: D009596:Nitrophenols; C024836:4-nitrophenol