Anaerobic digestion and co-digestion processes of vegetable and fruit residues: Process and microbial ecology

E. I. Garcia-Peña, P. Parameswaran, D. W. Kang, M. Canul-Chan, Rosa Krajmalnik-Brown

Research output: Contribution to journalArticlepeer-review

170 Scopus citations

Abstract

This study evaluated the feasibility of methane production from fruit and vegetable waste (FVW) obtained from the central food distribution market in Mexico City using an anaerobic digestion (AD) process. Batch systems showed that pH control and nitrogen addition had significant effects on biogas production, methane yield, and volatile solids (VS) removal from the FVW (0.42mbiogas3/kgVS, 50%, and 80%, respectively). Co-digestion of the FVW with meat residues (MR) enhanced the process performance and was also evaluated in a 30L AD system. When the system reached stable operation, its methane yield was 0.25 (m 3/kgTS), and the removal of the organic matter measured as the total chemical demand (tCOD) was 65%. The microbial population (general Bacteria and Archaea) in the 30L system was also determined and characterized and was closely correlated with its potential function in the AD system.

Original languageEnglish (US)
Pages (from-to)9447-9455
Number of pages9
JournalBioresource Technology
Volume102
Issue number20
DOIs
StatePublished - Oct 1 2011

Keywords

  • Co-digestion of FVW
  • Methane production
  • Microbial ecology

ASJC Scopus subject areas

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

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