1. Dairy manure was successfully gasified in a laboratoryscale
fluidized-bed gasifier, and the syngas was sampled
and analyzed. In addition, a three-factorial BBD design
was applied to evaluate the effects of three operating conditions
(temperature, ER and SBR) on the syngas composition
and energy efficiency of the gasification process.
2. As the temperature increased the combustible gas and energy
efficiency also increased on the whole; however,
the composition of each gas was also determined by
the comprehensive effect of all operating parameters. In
general, an increasing SBR (0 to 0.8) led to a decreasing
CH4 concentration and an increasing H2 concentration,
whereas the declining ER (2.0 to 0) resulted in a rising
concentration of CO.