Pyrolysis of different types of waste cooking oil in the presence/absence HZSM-5 catalyst: Influence of feedstock characteristics on aromatic formation

Wang, Yuanyuan; Zeng, Yuan; Li, Fan; Wu, Qiuhao; Zhang, Letian; Xiong, Jianyun; Zhang, Jiahui; Liao, Rui; Cobb, Kirk; Liu, Yuhuan; Ruan, Roger; Ruan, Roger

doi:10.1016/j.fuel.2023.128937

Cited by 13 publications

(1 citation statement)

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“…Another publication compared pyrolysis using microwave heating and electric heating of spent bleaching clay, and the authors addressed that the microwave heating saved up to 53% of the energy consumption in the proposed comparison, resulting in high production of aromatics in the bio-oil [59]. Several studies state the strong sensitivity of the yield and quality of the microwave-assisted pyrolysis products to the operational parameters [60][61][62][63][64][65].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Microwave-Assisted Pyrolysis of the Main Residue of the Brewing Industry

et al. 2023

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Most agro-industrial wastes are lignocellulosic biomass. Several technologies have been developed to convert these residues to value-added products. Among these processes, pyrolysis refers to the thermal degradation of organic materials. Microwave-assisted pyrolysis (MAP) is more advantageous than conventional pyrolysis because it offers time savings, increases heating efficiency, and promotes a more precise process control. In this work, the microwave-assisted pyrolysis (MAP) of brewer’s spent grain (BSG), the main waste of the brewing industry, was studied, focusing on its liquid product. The effects of temperature, moisture content, and catalyst (calcium oxide) percentage on the product distribution and hydrocarbon content in the liquid product obtained were investigated. Although a high liquid yield of 71.8% was achieved with a BSG moisture content of 14%, the quality of the product (hydrocarbon yield) in this condition was not so attractive (21.60%). An optimization study was carried out to simultaneously maximize bio-oil yield and quality. The optimum conditions obtained were a temperature of 570 °C and a catalyst/biomass ratio of 12.17%. The results of the liquid product composition at the optimum point are promising given the presence of aromatic hydrocarbons, organic compounds of great interest to the industry.

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