Feasibility of anaerobic digestion from bioethanol fermentation residue

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

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

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).

All Science Journal Classification (ASJC) codes

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

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