Aqueous ammonia pretreatment of oil palm empty fruit bunches for ethanol production

Young Hoon Jung, In Jung Kim, Jong In Han, In Geol Choi, Kyoung Heon Kim

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)


Oil palm empty fruit bunches (EFB) were pretreated by aqueous ammonia soaking for ethanol production. Pretreated EFB, which were pretreated at the optimal conditions of 60°C, 12. h, and 21% (w/w) aqueous ammonia, showed 19.5% and 41.4% glucose yields during an enzymatic digestibility test for 96. h when using 15 and 60. FPU of cellulase, respectively. Using the pretreated EFB, simultaneous saccharification and fermentation for 168. h with 5% (w/v) glucan loading and 60. FPU of cellulase and 30. CBU of β-glucosidase per gram glucan resulted in ethanol production of 18.6. g/L titer, 65.6% of theoretical maximum yield, and 0.11. g/L/h of productivity.

Original languageEnglish
Pages (from-to)9806-9809
Number of pages4
JournalBioresource technology
Issue number20
Publication statusPublished - 2011 Oct

Bibliographical note

Funding Information:
This work was supported by a Grant from the Advanced Biomass R&D Center of Korea funded by the Korea Ministry of Education, Science and Technology ( 2010-0029734 ). The facility support by the Institute of Biomedical Science and Food Safety, Korea University is also acknowledged.


  • Aqueous ammonia pretreatment
  • Biomass
  • Ethanol
  • Lignocelluloses
  • Oil palm empty fruit bunches

ASJC Scopus subject areas

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


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