Production of acetone-butanol-ethanol (ABE) with distiller's dried grains with solubles

Bin Wang, Thaddeus Ezeji, Zhen Shi, Hao Feng, Hans-Peter M Blaschek

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Distiller's dried grains with solubles (DDGS) is a low-value co-product from dry grind ethanol production. Due to its high fiber content, DDGS is used primarily as a feed for ruminant animals. Conversion of the carbohydrate components in DDGS to biofuel would improve the overall economics of dry grind ethanol production. The effect of solid loading on pretreatment of DDGS and on subsequent acetone-butanol-ethanol (ABE) fermentation was examined. DDGS samples were subjected to pretreatments in six catalytic solutions, at three solid loadings (20%, 30% and 40% w/w). After a 72-h hydrolysis, experiments were conducted to examine the fermentability of the hydrolysates using Clostridium acetobutylicum P260. The solid loading in a pretreatment appeared to affect both the sugar yields obtained from enzymatic hydrolysis and the ABE fermentation of DDGS hydrolysates. The hydrolysate from alkaline electrolyzed water pretreatment at 30% (w/w) solids was found to be most favorable to ABE production, while that from sulfuric acid pretreatment was the least fermentable, although it produced the highest sugar yield.

Original languageEnglish (US)
Title of host publicationAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2008, ASABE 2008
PublisherAmerican Society of Agricultural and Biological Engineers
Pages582-592
Number of pages11
Volume1
ISBN (Print)9781605605364
StatePublished - 2008
EventAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2008 - Providence, RI, United States
Duration: Jun 29 2008Jul 2 2008

Other

OtherAmerican Society of Agricultural and Biological Engineers Annual International Meeting 2008
CountryUnited States
CityProvidence, RI
Period6/29/087/2/08

Keywords

  • ABE fermentation
  • DGS
  • Electrolyzed water
  • Enzymatic hydrolysis
  • Pretreatment
  • Solid loading

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

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  • Cite this

    Wang, B., Ezeji, T., Shi, Z., Feng, H., & Blaschek, H-P. M. (2008). Production of acetone-butanol-ethanol (ABE) with distiller's dried grains with solubles. In American Society of Agricultural and Biological Engineers Annual International Meeting 2008, ASABE 2008 (Vol. 1, pp. 582-592). American Society of Agricultural and Biological Engineers.