hydrolysis of paper sludge (Shao, 2007). The paper sludge
used in this study contains 70% moisture content and 30%
solids. The dry paper sludge contains 47.7% glucan, 12.8%
xylan, 1.5% mannose (% dry weight) and 32.6% minerals.
Avicel PH-105 was kindly provided by FMC Biopolymer
Corporation (Philadelphia, PA) as a gift.