Comparative analysis of induction, microwave and two-stage pyrolysis methods for various polymers

The article presents a comparative analysis of existing methods based on pyrolysis using electromagnetic currents: induction, ultra-high frequency and two-stage combination (induction and ultra-high frequency). The authors consider the possibility of creating energy independence of the pyrolysis process for each method. Moreover, the effectiveness of each method is evaluated based on the introduced efficiency criteria: a temperature regime, reaction time, the output of liquid, combined-cycle and solid fractions, energy consumption, the complexity of control, versatility and productivity. All criteria are reduced to a dimensionless form. The corresponding criteria of induction heating are considered as the basic one.

1. Julian A., García-Jiménez [et al.]. Advances in the circularity of end-of-life fibre-reinforced polymers by microwave intensification. Chemical Engineering and Processing — Process Intensification. 2022. Vol. 178. P. 109015. DOI: 10.1016/j.cep.2022.109015.

2. Giorgini L., Benelli T., Brancolini G. Recycling of carbon fiber reinforced composites waste. Current Opinion in Green and Sustainable Chemistry. 2020. Vol. 26. P. 100368. DOI: 10.1016/j.cogsc.2020.100368.

3. Karuppannan Gopalraj S., Kärki T. A review on the recycling of waste carbon: fibre recovery, properties and lifecycle analysis. SN Applied Sciences. 2020. Vol. 2. P. 433. DOI: 10.1007/s42452-020-2195-4.

4. Hu X., Ma D., Zhang G. [et al.]. Microwave-assisted pyrolysis of waste plastics for their resource reuse. Carbon Resources Conversion. 2023. Vol. 6. P. 215–228. DOI: 10.1016/j.crcon.2023.03.002.

5. Sabogal O., Valin S., Thiery S. [et al.]. Design and thermal characterization of an induction-heated reactor for pyrolysis of solid waste. Chemical Engineering Research and Design. 2021. Vol. 173. P. 206–214. DOI: 10.1016/j.cherd.2021.07.018.

6. Cuong Duong-Viet, Lai Truong-Phuoc, Lam Nguyen-Dinh [et al.]. Magnetic induction assisted pyrolysis of plastic waste to liquid hydrocarbons on carbon catalyst. Materials Today Catalysis. 2023. Vol. 3. P. 100028. DOI: 10.1016/j.mtcata.2023.

7. Mariani A., Malucelli G. Insights into induction heating processes for polymeric materials. Energies. 2023. Vol. 16. P. 4535. DOI: 10.3390/en16114535.

8. Whajah B., Moura N., Blanchard J. [et al.]. Catalytic depolymerization of waste polyolefins by induction heating. Industrial and Engineering Chemistry Research. 2021. Vol. 60. P. 15141–15150. DOI: 10.1021/acs.iecr.1c02674.

9. Syie Luing W., Armenise S., Nyakuma B. [et al.]. Catalytic pyrolysis of plastics over maghemite-impregnated mesocellular foam using induction heating. Chemical Engineering Transactions. 2022. Vol. 97. P. 25–30. DOI: 10.3303/CET2297005.

10. Frisa-Rubio A., González-Niño C., Royo P. [et al.]. Chemical recycling of plastics assisted by microwave multifrequency heating. Cleaner Engineering and Technology. 2021. Vol. 5. P. 100297. DOI: 10.1016/j.clet.2021.100297.

11. Zhou N., Dai L., Lyu Y. [et al.]. Catalytic pyrolysis of plastic wastes in a continuous microwave assisted pyrolysis system. Chemical Engineering Journal. 2021. Vol. 418. P. 129412. DOI: 10.1016/j.cej.2021.129412.

12. Betancourth Mendoza J. D. Evaluation of manufacturing processes, materials, and energy efficiency in the Italian Eyewear Industry. Universitat Politècnica de Catalunya, 2024. 50 р.

13. Jeon S., Kim J., Yang D. Design of large-scale microwave cavity for uniform and efficient plastic heating. Polymers. 2022. Vol. 14, Issue 3. P. 541. DOI: 10.3390/polym14030541.

14. Lee Y. C., Hwang C. C., Tsai Y. H. [et al.]. Development and pasteurization of in-packaged ready-to-eat rice products prepared with novel microwave-assisted induction heating (MAIH) technology. Applied Food Research. 2025. Vol. 5, Issue 1. P. 100697. DOI: 10.1016/j.afres.2025.100697.

15. Lee Y. C., Hwang C. C., Huang Y. T. Application of novel microwave-assisted induction heating technology for extending the shelf life of ready-to-eat rice through microbial, physical, and chemical quality preservation. Innovative Food Science and Emerging Technologies. 2024. Vol. 93. P. 103640. DOI: 10.1016/j.ifset.2024.103640.

16. Lee Y. C., Tsai Y. H., Hwang C. C. [et al.]. Evaluating the effect of an emerging microwave-assisted induction heating on the quality and shelf life of pre-packaged Pacific white shrimp Litopenaeus vannamei stored at 4 °C in Taiwan. Food Control. 2022. Vol. 133. P. 108509. DOI: 10.1016/j.foodcont.2021.108509.

17. Tsai Y. H., Hwang C. C., Lin C. S. [et al.]. Comparison of microwave-assisted induction heating system (MAIH) and individual heating methods on the quality of pre-packaged white shrimp. Innovative Food Science and Emerging Technologies. 2021. Vol. 73. P. 102787. DOI: 10.1016/j.ifset.2021.102787.