Integrated production of cellulosic bioethanol and succinic acid from industrial hemp in a biorefinery concept

Mariusz Kuglarz, Merlin Alvarado-Morales, Dimitar Borisov Karakashev, Irini Angelidaki

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The aim of this study was to develop integrated biofuel (cellulosic bioethanol) and biochemical (succinic acid) production from industrial hemp (Cannabis sativa L.) in a biorefinery concept. Two types of pretreatments were studied (dilute-acid and alkaline oxidative method). High cellulose recovery (> 95%) as well as significant hemicelluloses solubilization (49-59%) after acid-based method and lignin solubilization (35-41%) after alkaline H2O2 method were registered. Alkaline pretreatment showed to be superior over the acid-based method with respect to the rate of enzymatic hydrolysis and ethanol productivity. With respect to succinic acid production, the highest productivity was obtained after liquid fraction fermentation originated from steam treatment with 1.5% of acid. The mass balance calculations clearly showed that 149 kg of EtOH and 115 kg of succinic acid can be obtained per 1 ton of dry hemp. Results obtained in this study clearly document the potential of industrial hemp for a biorefinery.
Original languageEnglish
JournalBioresource Technology
Volume200
Pages (from-to)639-647
ISSN0960-8524
DOIs
Publication statusPublished - 2016

Keywords

  • Cellulosic bioethanol
  • Succinic acid
  • Industrial hemp
  • Pretreatment
  • Biorefinery

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