Abstract

In the present study, combined steam (140-180 degrees C) and dilute-acid pre-hydrolysis (0.0-2.0%) were applied to industrial hemp (Cannabis sativa L), as pretreatment for lignocellulosic bioethanol production. The influence of the pretreatment conditions and cultivation type on the hydrolysis and ethanol yields was also evaluated. Pretreatment with 1% sulfuric acid at 180 degrees C resulted in the highest glucose yield (73-74%) and ethanol yield of 75-79% (0.38-0.40 g-ethanol/g-glucose). Taking into account the costs of biomass processing, from field to ethanol facility storage, the field-dried hemp pretreated at the optimal conditions showed positive economic results. The type of hemp cultivation (organic or conventional) did not influence significantly the effectiveness of the pretreatment as well as subsequent enzymatic hydrolysis and ethanol fermentation. (C) 2014 Elsevier Ltd. All rights reserved.

Keywords

Bioethanol; Steam pretreatment; Industrial hemp; Economic analysis

Published in

Bioresource Technology
2014, Volume: 163, pages: 236-243
Publisher: ELSEVIER SCI LTD

SLU Authors

• Svensson, Sven-Erik

  • Department of Biosystems and Technology, Swedish University of Agricultural Sciences
    

• Prade, Thomas

  • Department of Biosystems and Technology, Swedish University of Agricultural Sciences
    

• Johansson, Eva

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Bioenergy
Bioprocess Technology
Economics


Publication identifier

DOI: https://doi.org/10.1016/j.biortech.2014.04.049

Permanent link to this page (URI)

https://res.slu.se/id/publ/61768