Results (
Thai) 2:
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Conclusions
The results of this study indicate that simple microwave
technology can be used to convert grass type biomass to
sugars without the use of expensive enzymes. Sulphuric acid
concentration is important to ensure that residual sugars in
the biomass are not degraded during the treatment. Cofermentation
of pentose and hexose fermenting organisms
resulted in a high ethanol yield. The final ethanol yield
per hectare of sweet sorghum bagasse planted will determine
the ethanol yield per hectare that can be obtained in any
particular agricultural area of the world. Sweet sorghum
grown on marginal land can produce biomass as high as
35 metric tonne ha1 while that grown on irrigated land can
produce up to 130 tonne ha1. Ethanol can thus be produced
on marginal land at 0.252 m3 tonne1 biomass. The ethanol
yield per hectare depends on whether irrigation was used or
not. Water is becoming a scares commodity and if an integrated
food and energy bio-refinery is to become a reality, the
use of marginal land without irrigation would be the best
option of securing feedstock for food and energy production.
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