2.1. Feedstock
A waste furniture sawdust sample was supplied by a waste
wood treatment facility in Korea. Table 1 presents the results of
the ultimate and proximate analyses of the sawdust sample. Ultimate
analysis was carried out using an automatic elemental analyzer
(Flash EA 1112 Series CHNS-O analyzer, CE Instrument) and
proximate analysis was performed according to Korean Standard
Methods of Waste Quality. Each test case was repeated in triplicate
and the average results were taken. The proximate analysis results
are shown on an ash-free basis because the waste furniture sawdust
sample was contaminated with a significant amount of soil
and sand. Before the experiments, the waste furniture sawdust
was dried in an oven at 110 C for 24 h to reduce the amount of
water in the oil product. After the drying procedure, the water content
in the sawdust sample was found to be