High-solid mesophilic methane fermentation of food waste with an emphasis on Iron, Cobalt, and Nickel requirements

Hong Qiang, Dong Li Lang, Yu You Li

Research output: Contribution to journalArticlepeer-review

90 Citations (Scopus)

Abstract

The effect of trace metals on the mesophilic methane fermentation of high-solid food waste was investigated using both batch and continuous experiments. The continuous experiment was conducted by using a CSTR-type reactor with three run. During the first run, the HRT of the reactor was stepwise decreased from 100. days to 30. days. From operation day 50, the reactor efficiency deteriorated due to the lack of trace metals. The batch experiment showed that iron, cobalt, and nickel combinations had a significant effect on food waste. According to the results of the batch experiment, a combination of iron, cobalt, and nickel was added into the CSTR reactor by two different methods at run II, and III. Based on experimental results and theoretical calculations, the most suitable values of Fe/COD, Co/COD, and Ni/COD in the substrate were identified as 200, 6.0, and 5.7. mg/kg COD, respectively.

Original languageEnglish
Pages (from-to)21-27
Number of pages7
JournalBioresource Technology
Volume103
Issue number1
DOIs
Publication statusPublished - 2012 Jan 1

Keywords

  • Food waste
  • High-solids
  • Mesophilic
  • Methane fermentation
  • Trace metals

ASJC Scopus subject areas

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

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