Dynamics of methanogenic activities in a landfill bioreactor treating the organic fraction of municipal solid wastes

J. J. Lay, Y. Y. Li, T. Noike

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)

Abstract

A bench-scale investigation was conducted to evaluate the dynamics of methanogenic activities in a landfill bioreactor (LFBR) treating the organic fraction of municipal solid wastes (OFMSW). The specific methanogenic activity (SMA) test was used to measure each individual methanogenic activity on degrading carbohydrate, protein, lipid, butyrate, propionate, and acetate at an interval of one-year. A simple model incorporating three biokinetic parameters, namely lag-phase time, methane production rate and methane production potential, was employed to systematically describe the dynamics of SMA on the anaerobic mineralization of the OFMSW in an LFBR. The results indicate that the model is suitable to describe the dynamics of SMA in the LFBR. According to the dynamics of the SMA, the decomposition of proteins and lipids overruled the stabilization of the LFBR, while the rate of methanogenesis was higher than that of acetogenesis. Comparing the estimation and the observation of methane production rates suggested that the period of the critical incubation time (λ*) of the protein and the lipid influenced the efficiency of the LFBR.

Original languageEnglish
Pages (from-to)177-184
Number of pages8
JournalWater Science and Technology
Volume38
Issue number2 pt 2
DOIs
Publication statusPublished - 1998 Jan 1
Externally publishedYes
EventProceedings of the 1998 19th Biennial Conference of the International Association on Water Quality. Part 1 (of 9) - Vancouver, Can
Duration: 1998 Jun 211998 Jun 26

Keywords

  • Landfill bioreactor
  • Methanogenesis
  • Organic fraction of municipal solid waste
  • Specific methanogenic activity

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

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