Biofuel Manufacturing from Woody Biomass: Effects of Sieve ...
The hammer mill was manufactured by Sears Roebuck and Co. (Hoffman Estates, IL, USA). The size of the willow wood chips (three dimensions) was 13–50, 1376, and 5–25 mm. The moisture content was 7–10%. Energy consumption in hammer milling using the 1, 2, and 4 mm sieves was,, and Wh/g, respectively.