DENSITY DETERMINATION OF WOOD CHIPS USING SILICA POWDER
作者:
K. J. Park,
R. V. Gibbin,
F. P. R. Brod,
期刊:
Drying Technology
(Taylor Available online 2000)
卷期:
Volume 18,
issue 9
页码: 2145-2153
ISSN:0737-3937
年代: 2000
DOI:10.1080/07373930008917831
出版商: Taylor & Francis Group
关键词: powder;pycnometry;solids density
数据来源: Taylor
摘要:
This work reports the application of powder pycnometry in density measurement of granular material instead of the traditional liquid pycnometry. Fine dense silica powder was employed as fluid in an experimental set up to measure the density of wood chips taken as porous media. In order to verify the validity and efficiency of the proposed method, the density of soybean (Glycine max L. Merryl) was also measured. The results of soybean density using ethanol as fluid were compared with the proposed method, obtaining a relative deviation of 7·74%. Relative deviations between the samples of wood chips varied from 1·99% to 7·04%, which indicates that the silica method is efficient in determining the density of porous bodies. Liquid pycnometry technique using paraffin covering did not present satisfactory results.
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