Evaluation of greenhouse gas emission risks from storage of wood residue

Margareta Wihersaari

Research output: Contribution to journalArticleScientificpeer-review

94 Citations (Scopus)

Abstract

The use of renewable energy sources instead of fossil fuels is one of the most important means of limiting greenhouse gas emissions in the near future. In Finland, wood energy is considered to be a very important potential energy source in this sense. There might, however, still be some elements of uncertainty when evaluating biofuel production chains. By combining data from a stack of composting biodegradable materials and forest residue storage research there was an indication that rather great amounts of greenhouse gases maybe released during storage of wood chip, especially if there is rapid decomposition. Unfortunately, there have not been many evaluations of greenhouse gas emissions of biomass handling and storage heaps. The greenhouse gas emissions are probably methane, when the temperature in the fuel stack is above the ambient temperature, and nitrous oxide, when the temperature is falling and the decaying process is slowing down. Nowadays it is still rather unusual to store logging residue as chips, because the production is small, but in Finland storage of bark and other by-products from the forest industry is a normal process. The evaluations made indicate that greenhouse gas emissions from storage can, in some cases, be much greater than emissions from the rest of the biofuel production and transportation chain.
Original languageEnglish
Pages (from-to)444-453
JournalBiomass and Bioenergy
Volume28
Issue number5
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

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Keywords

  • storage
  • logging residue
  • biomass
  • dry matter loss
  • greenhouse gases
  • greenhouse effect
  • climate change
  • N2O
  • CH4

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