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Feasibility of anaerobic digestion from bioethanol fermentation residue

  • Jeong Hoon Park
  • , Sang Hyoun Kim
  • , Hee Deung Park
  • , Dong Jung Lim
  • , Jeong Jun Yoon*
  • *Corresponding author for this work

    Research output: Contribution to journal › Article › peer-review

    Abstract

    The focus of this study was the reuse of red algal ethanol fermentation residue as feedstock for anaerobic digestion. Levulinic acid and formic acid, the dilute-acid hydrolysis byproducts, inhibited methanogenesis at concentrations over 3.0 and 0.5. g/L, respectively. However, the inhibition was overcome by increasing inoculum concentration. A series of batch experiments with the fermentation residue showed increased methane yield and productivity at higher inoculum concentration. The maximum methane conversion rate of 84.8% was found at 5. g COD/L of fermentation residue at 0.25. g COD/g VSS of food-to-microorganism (F/M) ratio. The red algal ethanol fermentation residue can possibly be used as a feedstock in anaerobic digestion at appropriate concentration and F/M ratio.

    Original languageEnglish
    Pages (from-to)177-183
    Number of pages7
    JournalBioresource technology
    Volume141
    DOIs
    Publication statusPublished - 2013 Aug

    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 a Grant ( JA-12-0001 ) from Korea Institute of Industrial Technology , Republic of Korea, and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MOST) (2011-0014666).

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 7 - Affordable and Clean Energy
      SDG 7 Affordable and Clean Energy

    Keywords

    • Anaerobic digestion
    • Formic acid
    • Inhibition
    • Levulinic acid
    • Red algae

    ASJC Scopus subject areas

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

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