Ethanol production from oil palm trunks treated with aqueous ammonia and cellulase

Young Hoon Jung, In Jung Kim, Jae Jin Kim, Kyeong Keun Oh, Jong In Han, In Geol Choi, Kyoung Heon Kim

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


Oil palm trunks are a possible lignocellulosic source for ethanol production. Low enzymatic digestibility of this type of material (11.9% of the theoretical glucose yield) makes pretreatment necessary. An enzymatic digestibility of 95.4% with insoluble solids recovery of 49.8% was achieved after soaking shredded oil palm trunks in ammonia under optimum conditions (80°C, 1:12 solid-to-liquid ratio, 8h and 7% (w/w) ammonia solution). Treatment with 60 FPU of commercial cellulase (Accellerase 1000) per gram of glucan and fermentation with Saccharomyces cerevisiae D5A resulted in an ethanol concentration of 13.3g/L and an ethanol yield of 78.3% (based on the theoretical maximum) after 96h. These results indicate that oil palm trunks are a biomass feedstock that can be used for bioethanol production.

Original languageEnglish
Pages (from-to)7307-7312
Number of pages6
JournalBioresource technology
Issue number15
Publication statusPublished - 2011 Aug


  • Ammonia pretreatment
  • Ethanol
  • Lignocellulose
  • Oil palm trunks

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal


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