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Journal Article

期刊文章

Leachates of thermally modified pine (Pinus sylvestris L.) wood  [2015]

Meija-Feldmane, A., Latvian State Inst. of Wood Chemistry, Riga (Latvia);

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During the last decades, thermally modified wood has become an object of interest among the wood scientists as an environmentally friendly material, because nowadays environmental aspects of materials have become more and more significant. Leaching is one of the processes that occur in outdoor use. The aim of this study was to evaluate concentration of potentially hazardous substances in leachates of thermally modified pine wood. Scots pine (Pinus sylvestris L.) wood was thermally modified using Wood Treatment Technology (WTT) company device at 170 °C for 1 hour (TMP170/1) and at 160 °C for 3 hours (TMP160/3) and the mass loss was calculated. Material preparation and leaching procedure was made according to standard LVS EN 84:2000. In obtained leachates, the content of sugars, acetic acid, furfural and tannic acid were determined. Results showed that the total wood mass loss was 7.1 ± 1.4% (n=20) for TMP170/1 and 4.0 ± 1.6% (n=20) for TMP160/3. The initial leaching velocity differs between both modes and is higher for TMP160/3. The velocity decreases exponentially with immersion time and reaches plateau after 7th (5 days) immersion, but leaching still continues after the 9th immersion (14 days). The main components in leachates were tannic acid and pentoses. Among all studied compounds furfural is the hardest leachable one. Thermally modified wood treated at TMP170/1 is more environmentally friendly due to less water leachable substances. It is worth looki
ng forward by investigating volatile organic compounds emissions in the air as it also could give high impact on human health.
来自期刊
Scientific journal of Latvia University of Agriculture
ISSN : 2256-0939

书目信息

语言:
English
类型:
Web site
自何时收录于AGRIS:
2016
卷:
34
期:
329
起始页:
26
结束页:
31
所有题名:
"Leachates of thermally modified pine (Pinus sylvestris L.) wood"@eng
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书目信息

语言:
English
类型:
Web site
自何时收录于AGRIS:
2016
卷:
34
期:
329
起始页:
26
结束页:
31
所有题名:
"Leachates of thermally modified pine (Pinus sylvestris L.) wood"@eng