Anaerobic digestibility of algal bioethanol residue

Jeong Hoon Park, Jeong Jun Yoon, Hee Deung Park, Dong Jung Lim, Sang Hyoun Kim

Research output: Contribution to journalArticlepeer-review

65 Citations (Scopus)


The aim of this work was to investigate anaerobic digestibility of algal bioethanol residue from saccharification and fermentation processes. A series of batch anaerobic digestion tests using saccharification and fermentation residue showed that the maximum methane yields of saccharification residue and fermentation residue were 239. L/kg VS (Volatile Solids) and 283. L/kg VS (Volatile Solids), respectively. Energy recovered by anaerobic digestion of the residue was 2.24 times higher than that from the ethanol produced in the main process. 5-HMF (5-hydroxymethylfurfural), a saccharification byproduct, could retard methanogenesis at over 3. g/L however, the inhibition was prevented by increasing cell biomass concentration. Anaerobic digestion of residue has the potential to enhance bioenergy recovery and environmental sustainability of algal bioethanol production.

Original languageEnglish
Pages (from-to)78-82
Number of pages5
JournalBioresource technology
Publication statusPublished - 2012 Jun

Bibliographical note

Funding Information:
This work was supported by a Grant (09-FN-1-0014) from Korea Institute of Energy Technology Evaluation and Planning, Ministry of Knowledge Economy, Republic of Korea and Basic Science Research Program (2011-0014666) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology, Republic of Korea.

All Science Journal Classification (ASJC) codes

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


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