Bio-Oil Production from <i>Prosopis juliflora</i> via Microwave Pyrolysis


Microwave pyrolysis is an efficient technique to valorize the abundantly available <i>Prosopis juliflora</i> (PJF) biomass into fuel intermediates. In this study, the effects of microwave power, susceptor, PJF particle size, PJF to susceptor mass ratio, and initial mass of PJF on bio-oil, gas, and char yields, composition of bio-oil, and energy recovery in bio-oil and char were evaluated. Five different susceptors, namely, graphite, char, aluminum, silicon carbide, and fly ash, an industry waste, were utilized. A high bio-oil yield of 40 wt % with a heating value of 26 MJ kg<sup>–1</sup> was achieved with fly ash at a microwave power of 560 W, PJF particle size of 2–4 mm, and PJF (50 g)/fly ash composition of 100:1 (wt/wt). The bio-oil contained a mixture of phenolic compounds, aromatic hydrocarbons, cyclopentanones, carboxylic acids, ketones, and furan derivatives. Nearly 51% deoxygenation of PJF was achieved with an atomic O/C ratio of 0.24 in bio-oil. This work demonstrates that the yield and quality of bio-oil are dependent on key parameters such as microwave power, biomass particle size/composition, and type of susceptor

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oai:figshare.com:article/2049756Last time updated on 2/12/2018

This paper was published in FigShare.

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