Since high moisture content (65–75%) in lignocellulosic
biomass from palm oil industry such as EFB, OPF and OPT, it
is therefore not technical economic to be used directly as fuel for
steam production (Foo and Hameed, 2009). Combustion is feasible
for biomass having moisture content less than 50%, otherwise the
energy efficiency is low (10–30%) and the pollutant emissions are
the by-products of combustion (Mohammed et al., 2011).