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European Journal of Wood and Wood Products

, Volume 69, Issue 4, pp 587–595 | Cite as

Temperature and gas evolution during large scale outside storage of wood chips

  • F. FerreroEmail author
  • M. Malow
  • M. Noll
Originals Originalarbeiten

Abstract

The temperature and gas concentrations in a newly established pine-wood debris pile of 20 m×15 m×6 m in dimensions (approximately 400 tons of fresh weight material) were monitored for 150 days. Temperature was measured at ten different positions within the pile, while concentrations of CO2, O2, CO and CH4 were taken at four different representative locations. The pile was characterized by a strong temperature increase within the first 10–12 days of storage. Results of the gas analysis in this period suggest that the temperature increase was caused by microbial processes. In particular, reduced oxygen concentration and almost complete absence of methane indicate mainly aerobic respiration processes. Effects of weather conditions on the temperature/gas distribution and time evolution are also discussed in the paper.

Keywords

Wood Chip Carbon Dioxide Concentration Carbon Dioxide Content Carbon Monoxide Concentration Wood Pile 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Temperatur- und Gasmessungen während der Lagerung einer Holzhalde im industriellen Maßstab

Zusammenfassung

Temperatur und Konzentration von CO2, O2, CO und CH4 wurden innerhalb einer neu aufgeschütteten Holzhalde mit einer Größe von 20 m×15 m×6 m (ca. 400 Tonnen des Frischgewichtes) über eine Lagerungsdauer von 150 Tagen gemessen. Die Temperatur wurde an zehn Positionen innerhalb der Halde aufgenommen, während die Gaskonzentrationen an vier repräsentativen Positionen nach Haldenaufbau gemessen wurden. Die Halde wies eine sehr starke Temperaturerhöhung in den ersten 10–12 Tagen der Lagerung auf. Die Ergebnisse der Gasanalysen während dieses Zeitraums sind indikativ dafür, dass mikrobielle Prozesse innerhalb der Halde die Haldenerwärmung verursacht haben. Insbesondere die geringe Sauerstoffkonzentration und die fast komplette Abwesenheit von Methan weisen auf eine hohe aerobe, mikrobielle Atmungsaktivität hin. Der Einfluss der Wetterlage auf die zeitliche Entwicklung und auf die Verteilung der Temperatur und der Gaskonzentrationen innerhalb der Halde werden in dieser Studie diskutiert.

Notes

Acknowledgements

The authors would like to thank the German Federal Ministry of Education and Research for funding the project “Fire Prevention during Storage of Biomass Fuels” (FKZ: 01LS05079) within the scope of the research initiative “Klimazwei”. The authors take the responsibility of the contents of this publication.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.BAM Federal Institute for Materials Research and TestingBerlinGermany
  2. 2.Division 74 “Hygiene and Microbiology”Federal Institute for Risk Assessment (BfR)BerlinGermany

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