The effect of Tween-20 on simultaneous saccharification and fermentation of softwood to ethanol

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Simultaneous sacchatification and fermentation (SSF) of steam-pretreated wood constitutes an attractive process configuration for ethanol production from biomass. However, the high enzyme addition in SSF contributes to a high process cost. In this study we explore the effect of the non-ionic surfactant Tween-20 as an additive in SSE Tween-20 addition at 2.5 g/l had several positive effects on SSF: (i) the ethanol yield was increased by 8%; (ii) the amount of enzyme loading could be reduced by 50%, while maintaining a constant yield; (iii) the enzyme activity increased in the liquid fraction at the end of SSF, probably by preventing unproductive binding of the cellulases to lignin, which could facilitate enzyme recovery; (iv) the time required to attain maximum ethanol concentration was reduced. Surfactants as an additive in SSF can significantly lower the operational cost of the process. However, less expensive surfactants must be investigated. (C) 2003 Elsevier Science Inc. All rights reserved.

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Biologiska vetenskaper
  • Kemiteknik

Nyckelord

Originalspråkengelska
Sidor (från-till)71-78
TidskriftEnzyme and Microbial Technology
Volym33
Utgivningsnummer1
StatusPublished - 2003
PublikationskategoriForskning
Peer review utfördJa