Novel anaerobic process for the recovery of methane and compost from food waste.

S. K. Han, H. S. Shin, Y. C. Song, C. Y. Lee, S. H. Kim

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Multi-step sequential batch two-phase anaerobic composting (MUSTAC) process was used to recover methane and composted material from food waste. The MUSTAC process consists of five leaching beds for hydrolysis, acidification and post-treatment, and an upflow anaerobic sludge blanket (UASB) reactor for methane recovery. This process involves the combined methods of sequential batch operation and two-phase anaerobic digestion for simple operation and high efficiency. Rumen microorganisms are inoculated due to their enhanced cellulolytic activity. Each leaching bed is operated in a sequential batch mode. Five leaching beds are operated in a multi-step mode with a two-day interval between degradation stages. Acidified products in the leachate from the leaching beds are converted to methane in the UASB reactor. The MUSTAC process demonstrated that it was capable of removing 84.9% of volatile solids (VS) and converting 85.6% of biochemical methane potential (BMP) into methane at 10.9 kg VS/m3 x d in 10 days. Methane gas production rate was 2.31 m3/m3 x d. The output from the post-treatment of residues in the same leaching bed without troublesome moving met the Korean regulation on compost, indicating that it could be used for soil amendment.

Original languageEnglish
Pages (from-to)313-319
Number of pages7
JournalWater Science and Technology
Volume45
Issue number10
Publication statusPublished - 2002 Aug 21

Fingerprint

compost
Methane
Leaching
methane
Recovery
leaching
Composting
food
composting
sludge
Anaerobic digestion
Acidification
soil amendment
gas production
Microorganisms
acidification
leachate
anaerobic process
hydrolysis
Hydrolysis

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

Cite this

Han, S. K. ; Shin, H. S. ; Song, Y. C. ; Lee, C. Y. ; Kim, S. H. / Novel anaerobic process for the recovery of methane and compost from food waste. In: Water Science and Technology. 2002 ; Vol. 45, No. 10. pp. 313-319.
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Novel anaerobic process for the recovery of methane and compost from food waste. / Han, S. K.; Shin, H. S.; Song, Y. C.; Lee, C. Y.; Kim, S. H.

In: Water Science and Technology, Vol. 45, No. 10, 21.08.2002, p. 313-319.

Research output: Contribution to journalArticle

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