title: Continuous xylose fermentation by Clostridium acetobutylicum--Assessment of solventogenic kinetics.
abstract: This work deals with the specific butanol production rate of Clostridium acetobutylicum using xylose--a relevant fraction of lignocellulosic feedstock for biofuel production--as carbon source. The tests were carried out in a CSTR equipped with a microfiltration unit. The dilution rate (D) ranged between 0.02 and 0.22 h(-1) and the ratio R between the permeate stream rate and the stream fed to the reactor ranged between 14% and 88%. The biomass present in the broth was identified as a heterogeneous cell population consisting of: acidogenic cells, solventogenic cells and spores. The results were processed to assess the concentration of acidogenic cells, solventogenic cells and spores. The specific butanol production rate was also assessed. The max butanol productivity was 1.3 g L(-1) h(-1) at D = 0.17 h(-1) and R = 30%. A comparison between the results reported in a previous work carried out with lactose was made.
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: Alessandra
authors.initials: A
authors.lastname: Procentese
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: Francesca
authors.initials: F
authors.lastname: Raganati
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; Bioprocess Engineering - AlgaePARC, Wageningen University, PO Box 16, 6700AA Wageningen, The Netherlands. Electronic address: giolivie@unina.it.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Olivieri
authors.affiliation: Istituto di Ricerche sulla Combustione, Consiglio Nazionale delle Ricerche, P.le V. Tecchio 80, 80125 Napoli, Italy.
authors.forename: Maria Elena
authors.initials: ME
authors.lastname: Russo
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: Piero
authors.initials: P
authors.lastname: Salatino
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: Antonio
authors.initials: A
authors.lastname: Marzocchella
mesh_terms: D056804:Biofuels; D018533:Biomass; D019149:Bioreactors / Q000382:microbiology; D000440:Butanols / Q000378:metabolism; D046969:Clostridium acetobutylicum / Q000378:metabolism*; D005285:Fermentation / Q000502:physiology*; D007700:Kinetics; D007785:Lactose / Q000378:metabolism; D008031:Lignin / Q000378:metabolism; D013171:Spores, Bacterial / Q000378:metabolism; D014994:Xylose / Q000378:metabolism*
chemical_list: D056804:Biofuels; D000440:Butanols; C036909:lignocellulose; D008031:Lignin; D014994:Xylose; D007785:Lactose
keywords: Butanol; Clostridium acetobutylicum; Kinetic model; Solventogenesis; Xylose