title: Butanol production by bioconversion of cheese whey in a continuous packed bed reactor.
abstract: Butanol production by Clostridium acetobutylicum DSM 792 fermentation was investigated. Unsupplemented cheese whey was adopted as renewable feedstock. The conversion was successfully carried out in a biofilm packed bed reactor (PBR) for more than 3 months. The PBR was a 4 cm ID, 16 cm high glass tube with a 8 cm bed of 3mm Tygon rings, as carriers. It was operated at the dilution rate between 0.4h(-1) and 0.94 h(-1). The cheese whey conversion process was characterized in terms of metabolites production (butanol included), lactose conversion and biofilm mass. Under optimized conditions, the performances were: butanol productivity 2.66 g/Lh, butanol concentration 4.93 g/L, butanol yield 0.26 g/g, butanol selectivity of the overall solvents production 82 wt%.
authors.affiliation: Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale - Università degli Studi di Napoli Federico II, P.le V. Tecchio 80, 80125 Napoli, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Raganati
authors.forename: G
authors.initials: G
authors.lastname: Olivieri
authors.forename: A
authors.initials: A
authors.lastname: Procentese
authors.forename: M E
authors.initials: ME
authors.lastname: Russo
authors.forename: P
authors.initials: P
authors.lastname: Salatino
authors.forename: A
authors.initials: A
authors.lastname: Marzocchella
mesh_terms: D000143:Acids / Q000378:metabolism; D018441:Biofilms; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology; D001709:Biotechnology / Q000295:instrumentation* / Q000379:methods*; D000440:Butanols / Q000378:metabolism*; D002611:Cheese; D046969:Clostridium acetobutylicum / Q000254:growth & development / Q000378:metabolism; D008894:Milk Proteins / Q000378:metabolism*; D000067816:Whey Proteins
chemical_list: D000143:Acids; D000440:Butanols; D008894:Milk Proteins; D000067816:Whey Proteins