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Thermolysis of medical plastic wastes using Zeolite A catalyst-kinetic study, experimental optimisation and validation

    Amar Kumar Das Affiliation
    ; Saroj Kumar Rout Affiliation
    ; Achyut Kumar Panda Affiliation

Abstract

This work reports the thermo-catalytic conversion of medical plastic wastes to fuel oil using the detergent grade Zeolite A as the catalyst. The effect of catalyst on the pyrolysis is ascertained from the kinetic data obtained from thermogravimetric analysis assuming it to be a first-order reaction. A significant reduction in activation energy of the thermal degradation reaction is found in presence of the Zeolite A catalyst. The pyrolysis runs were performed at different temperatures from 400–550 °C in a stainless-steel batch reactor system to obtain an optimum condition for suitable waste to energy process. The highest oil yield of 79% was obtained at 500 °C with 10% catalyst concentration. The thermogravimetric analysis and the batch pyrolysis experimental result indicated a promising effect of the catalyst in terms of the enhanced rate of reaction and conversion. The oil fraction obtained in the optimum condition of catalytic pyrolysis was analysed for its composition and fuel properties. It confirmed the presence of branched alkane and alkene with composition C10–C18. Again, the fuel properties of the oil such as specific gravity (0.793), viscosity (3.75Cst@ 30 °C), and flash point (<11 °C) resemble that of the petro fuels. Neural Networks (NNs) are used to recognize patterns, and relationships in data and validate the experimental results of this reaction and the results indicate that the use of ANN in thermo-catalytic degradation of medical waste to fuel oil is a feasible option that should be considered for real-time applications.

Keyword : medical plastic wastes, Zeolite A catalyst, pyrolysis, Artificial Neural Networks

How to Cite
Das, A. K., Rout, S. K., & Panda, A. K. (2022). Thermolysis of medical plastic wastes using Zeolite A catalyst-kinetic study, experimental optimisation and validation. Journal of Environmental Engineering and Landscape Management, 30(2), 249-258. https://doi.org/10.3846/jeelm.2022.16741
Published in Issue
May 24, 2022
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This work is licensed under a Creative Commons Attribution 4.0 International License.

References

Aguado, J., Serrano, D. P., & Escola, J. M. (2008). Fuels from waste plastics by thermal and catalytic processes: A review. Industrial & Engineering Chemistry Research, 47(21), 7982–7992. https://doi.org/10.1021/ie800393w

Aljarah, I., Faris, H., & Mirjalili, S. (2018). Optimizing connection weights in neural networks using the whale optimization algorithm. Soft Computing, 22(1), 1–15. https://doi.org/10.1007/s00500-016-2442-1

Al-Salem, S. M., Antelava, A., Constantinou, A., Manos, G., & Dutta, A. (2017). A review on thermal and catalytic pyrolysis of plastic solid waste (PSW). Journal of Environmental Management, 197, 177–198. https://doi.org/10.1016/j.jenvman.2017.03.084

Butler, E., Devlin, G., & McDonnell, K. (2011). Waste polyolefins to liquid fuels via pyrolysis: Review of commercial state-of-the-art and recent laboratory research. Waste and Biomass Valorization, 2(3), 227–255. https://doi.org/10.1007/s12649-011-9067-5

Environmental Information System. (2014). Bio-medical waste management: An overview. http://cpcbenvis.nic.in/envis_newsletter/BMW%20Newsletter.pdf

Jan, M. R., Shah, J., & Gulab, H. (2010a). Catalytic degradation of waste high-density polyethylene into fuel products using BaCO3 as a catalyst. Fuel Processing Technology, 91(11), 1428–1437. https://doi.org/10.1016/j.fuproc.2010.05.017

Jan, M. R., Shah, J., & Gulab, H. (2010b). Degradation of waste High-density polyethylene into fuel oil using basic catalyst. Fuel, 89(2), 474–480. https://doi.org/10.1016/j.fuel.2009.09.007

Krestinskaya, O., & James, A. P. (2018, July). Binary weighted memristiveanalog deep neural network for near-sensor edge processing. In 2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO) (pp. 1–4). IEEE. https://doi.org/10.1109/NANO.2018.8626224

Kunwar, B., Cheng, H. N., Chandrashekaran, S. R., & Sharma, B. K. (2016). Plastics to fuel: A review. Renewable and Sustainable Energy Reviews, 54, 421–428. https://doi.org/10.1016/j.rser.2015.10.015

Lee, B. K., Ellenbecker, M. J., & Moure-Eraso, R. (2002). Analyses of the recycling potential of medical plastic wastes. Waste Management, 22(5), 461–470. https://doi.org/10.1016/S0956-053X(02)00006-5

Miandad, R., Barakat, M. A., Aburiazaiza, A. S., Rehan, M., & Nizami, A. S. (2016). Catalytic pyrolysis of plastic waste: A review. Process Safety and Environmental Protection, 102, 822–838. https://doi.org/10.1016/j.psep.2016.06.022

Montana, D. J., & Davis, L. (1989, August). Training feed forward neural networks using genetic algorithms. In International Joint Conference on Artificial Intelligence (Vol. 89, pp. 762–767). Morgan Kaufmann Publishers.

NALCO India. (n.d.). Zeolite-A. https://nalcoindia.com/business/products/zeolite-a/

Panda, A. K., Singh, R. K., & Mishra, D. K. (2010). Thermolysis of waste plastics to liquid fuel: A suitable method for plastic waste management and manufacture of value added products – A world prospective. Renewable and Sustainable Energy Reviews, 14(1), 233–248. https://doi.org/10.1016/j.rser.2009.07.005

Panda, A. K., & Singh, R. K. (2014). Conversion of waste polypropylene to liquid fuel using acid-activated kaolin. Waste Management & Research, 32(10), 997–1004. https://doi.org/10.1177/0734242X14545504

Patnaik, S., Barick, A. K., & Panda, A. K. (2020). Thermo-catalytic degradation of different consumer plastic wastes by zeolite a catalyst: A kinetic approach. Progress in Rubber, Plastics and Recycling Technology, 37(2), 148–164. https://doi.org/10.1177/1477760620972407

Serrano, D. P., Aguado, J., & Escola, J. M. (2012). Developing advanced catalysts for the conversion of polyolefinic waste plastics into fuels and chemicals. ACS Catalysis, 2(9), 1924–1941. https://doi.org/10.1021/cs3003403