The release of terpenes during storage of biomass

• During outdoor storage of large quantities of wood fuels, hydrocarbons are emitted into air in gas phase and leachedout into the ground by precipitation. To investigate to what extent these emissions have environmental or health effects,sampling has been done on wood chip piles in an existing terminal storage situated in the south of Sweden, north east ofVa¨ xjo¨ . Sampling was done by solid phase microextraction (SPME) and analyzed on a gas chromatograph equippedwith a mass spectrometer. The storage period, during which sampling was performed, stretches from June throughJanuary, a total of 200 days. Sampling was performed at 7 occasions. The results show that emissions into air increaseswhen the temperature directly above the pile increases. The temperature above the pile decrease with the ambienttemperature, up until September for the forest residue and October for the bark and root reducing wood chips, whenthe temperature above the pile suddenly increases. This could be due to the ambient temperature, the storage time ormicrobial activity.The PAH content in the leachate, 27.27 mg/l, does not seem to be in the range where it might give large effects on theenvironment.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)

NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Energiteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Energy Engineering (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Produktionsteknik, arbetsvetenskap och ergonomi (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Production Engineering, Human Work Science and Ergonomics (hsv//eng)

Nyckelord

Biomass storage; Organic emission; Terpenes; Volatile organic compounds; Gas chromatography

Environmental chemistry

Miljökemi

Chemical energy engineering

Kemisk energiteknik

gas chromatography

volatile organic compounds

terpenes

organic emission

biomass storage

Publikations- och innehållstyp

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