Influence of Zeolite as Catalyst in Thermal Decomposition Process for Liquid Biofuels
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Abstract
The present work focuses on the influence of ZSM-5 zeolite as catalyst on yields and properties of liquid biofuels derived from Leucaena leucocepphala wood. The physicochemical properties were characterized by SEM FTIR XRD and EDX technique. The influence of two key variables: the effect of temperature in catalytic zone (400 - 600 ºC) and catalyst to biomass ratios (1:1 - 3:1) was evaluated. Thermal degradation experiments were operated via fast pyrolysis process in a bubbling fluidized-bed reactor working at absence of oxygen under an inert gas system. The yield of liquid biofuels, solid, gas, and oxygen content and thermal properties in liquid biofuels were observed. The present investigation was to study the exhaust gas emission from liquid biofuels combustion. The results showed a decrease in liquid biofuels yield with increase in temperature in catalytic zone. In addition, the increase catalyst to biomass ratio, the yield of liquid biofuels decreased, whereas gas showed the increasing yield. Nevertheless, 47.4% of the oxygen content in this liquid biofuels was eliminated compared with absence catalyst and leading to a maximum of higher heating value of 33.76 MJ/kg with the pyrolysis temperature of 500 ºC, temperature of catalyst zone of 500 ºC and catalyst to biomass ratios of 3:1. Liquid biofuels had quite lower exhaust gas emission than that of commercial diesel.
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Articles published in Journal of Industrial Technology Ubon Ratchathani Rajabhat University both hard copy and electronically are belonged to the Journal.
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