Synergistic recovery of renewable hydrocarbon resources via microwave co-pyrolysis of biomass residue and plastic waste over spent toner catalyst towards sustainable solid waste management

Dineshkumar Muniyappan, Amaro Olimpio Pereira Junior, Angkayarkan Vinayakaselvi M and Anand Ramanathan

Energy, 2023, vol. 278, issue C

Abstract: The present study unveiled the effect of operating temperature, blending ratio and catalyst addition on the product distribution during microwave co-pyrolysis of Hydnocarpus de-oiled seed cake (HDSC) and Waste electrical and electronic plastic (WEEP). In this work, a new approach of “treatment of wastes with waste” was proposed by converting spent toner powder into a low-cost catalyst. Initially, co-pyrolysis process was conducted in which the operating temperature were changed to 450, 500, and 550 °C corresponding to HDSC:WEEP mixture ratios of 100:0, 75:25, 50:50, 25:75, 0:100. The result shows that oil phase yield was significantly higher for 50:50 mixture ratio and this condition further selected for addition of catalyst. The catalytic co-pyrolysis result shows that produced oil have a density of 0.862 g/mL, high calorific value of 39.51 MJ/kg and viscosity 2.71 cSt which is comparable to commercial diesel fuel. The GC-MS study discovered that addition of catalyst could significantly suppress the oxygen and nitrogen compounds while promote the formation of aromatic hydrocarbons through Diels-Alder reaction mechanism. Finally, techno economic analysis revealed that 1000 kg/h plant demonstrated to be economically viable, with minimal production cost (USD 0.53/L compared to USD 1.15/L of commercial diesel fuel price in India).

Keywords: Co-pyrolysis; Microwave; Bio-oil; Biomass; E-Waste; Spent toner powder (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:278:y:2023:i:c:s0360544223010460

DOI: 10.1016/j.energy.2023.127652

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