Abstract
Storage of comminuted organic matter such as forest fuel from logging residues implies a risk of intensive microbial activity, leading to losses of dry matter and health risks during handling. The effect of placing a tunnel longitudinally through the bottom of a chips pile on moisture content of the chips and occurrence of spores, was studied. A fan was not used. Fuel chips moisture content was about 22% at the start of the storage. Moisture content decreased by 25-30% in the ventilated pile, and by about 20% in the control pile. The temperature development differed strongly between the pile with the tunnel and the control pile. Having reached a maximum of about 75 deg C, the temperature in the ventilated pile started to decrease already after 4 days, whereas in the control pile the temperature remained at a high level throughout the storage period. The number of fungal spores after storage was higher in the ventilated pile than in the control pile owing to the more favourable temperature in the former. The loss of dry matter was highest in the control, being caused both by chemical and microbial activity. The shares of fine fractions, ash content and heat value did
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Citation Formats
Jirjis, R, Lehtikangas, P, and Oskarsson, R.
Storage of fuel chips; Terminallagring av braensleflis.
Sweden: N. p.,
1993.
Web.
Jirjis, R, Lehtikangas, P, & Oskarsson, R.
Storage of fuel chips; Terminallagring av braensleflis.
Sweden.
Jirjis, R, Lehtikangas, P, and Oskarsson, R.
1993.
"Storage of fuel chips; Terminallagring av braensleflis."
Sweden.
@misc{etde_10150314,
title = {Storage of fuel chips; Terminallagring av braensleflis}
author = {Jirjis, R, Lehtikangas, P, and Oskarsson, R}
abstractNote = {Storage of comminuted organic matter such as forest fuel from logging residues implies a risk of intensive microbial activity, leading to losses of dry matter and health risks during handling. The effect of placing a tunnel longitudinally through the bottom of a chips pile on moisture content of the chips and occurrence of spores, was studied. A fan was not used. Fuel chips moisture content was about 22% at the start of the storage. Moisture content decreased by 25-30% in the ventilated pile, and by about 20% in the control pile. The temperature development differed strongly between the pile with the tunnel and the control pile. Having reached a maximum of about 75 deg C, the temperature in the ventilated pile started to decrease already after 4 days, whereas in the control pile the temperature remained at a high level throughout the storage period. The number of fungal spores after storage was higher in the ventilated pile than in the control pile owing to the more favourable temperature in the former. The loss of dry matter was highest in the control, being caused both by chemical and microbial activity. The shares of fine fractions, ash content and heat value did not vary between the piles. The storage study was conducted on very dry chips. Temperature development and microbial activity may be different in material with normal moisture content. 8 figs, 23 tabs}
place = {Sweden}
year = {1993}
month = {Jun}
}
title = {Storage of fuel chips; Terminallagring av braensleflis}
author = {Jirjis, R, Lehtikangas, P, and Oskarsson, R}
abstractNote = {Storage of comminuted organic matter such as forest fuel from logging residues implies a risk of intensive microbial activity, leading to losses of dry matter and health risks during handling. The effect of placing a tunnel longitudinally through the bottom of a chips pile on moisture content of the chips and occurrence of spores, was studied. A fan was not used. Fuel chips moisture content was about 22% at the start of the storage. Moisture content decreased by 25-30% in the ventilated pile, and by about 20% in the control pile. The temperature development differed strongly between the pile with the tunnel and the control pile. Having reached a maximum of about 75 deg C, the temperature in the ventilated pile started to decrease already after 4 days, whereas in the control pile the temperature remained at a high level throughout the storage period. The number of fungal spores after storage was higher in the ventilated pile than in the control pile owing to the more favourable temperature in the former. The loss of dry matter was highest in the control, being caused both by chemical and microbial activity. The shares of fine fractions, ash content and heat value did not vary between the piles. The storage study was conducted on very dry chips. Temperature development and microbial activity may be different in material with normal moisture content. 8 figs, 23 tabs}
place = {Sweden}
year = {1993}
month = {Jun}
}