With the inevitable depletion of the world’s energy supply,
there has been an increasing worldwide interest in alternative energy
sources (Lin and Tanaka, 2006). In recent years, increasing research
and development efforts have been directed towards the
commercial production of ethanol as the most promising biofuel
from renewable resources. In many European countries the use
of bio-ethanol as an alternative fuel or gasoline supplement in
amounts up to 15% is highly recommended (Mojovic et al.,
2006).