Influence of Pyrolysis Temperature on Biochar Characterization as Heterogeneous Catalyst for Conversion of Triglycerides to Fatty Acid Methyl Ester
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Abstract
The aim of this research is to consider the influence of pyrolysis temperature on biochar characteristics as a heterogeneous catalyst for biodiesel production. The biochar catalyst was characterized using the following analyses: proximate analysis, ultimate analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Tellet (BET) surface analysis and X-ray fluorescence (XRF). XRF was used to determine the elemental composition of the catalyst. Biochar catalyst was investigated in triglyceride transesterification to fatty acid methyl ester (FAME). The influence of pyrolysis temperature (400 - 600 ºC) and reaction stirring rate (350 - 950 rpm) for producing biodiesel were evaluated. It was found that a higher pyrolysis temperature caused an increasing surface area and decreasing pore diameter, thereby helping more develop active site. Biochar from 600 ºC and 750 rpm stirring rate showed the maximum fatty acid methyl ester yield of 91.6% with catalyst loading of 1%. The results indicated that the yield was dependent on both pyrolysis temperature and stirring rate. Bioresource for production of heterogeneous catalyst can be successfully utilized which reduces the cost of biodiesel production as well.
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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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