Kinetic study of the pyrolysis of polypropylene over natural clay
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Jan Nisar
,
Yousaf Khan
,
Munawar Iqbal
Abstract
Clay is widely used in numerous industrial activities; however, its application as an efficient catalyst for the decomposition of plastic waste on a commercial scale is scanty. Therefore, in this study, we have made efforts to use natural clay as the catalyst for the thermal decomposition of polypropylene in a pyrolysis setup. The pyrolysis oil obtained was found rich in hydrocarbons ranging from C8–C35. Kinetics of the pyrolysis reaction was determined utilizing thermogravimetric data and the activation energy (E) and A-factor were observed as 70.33–94.80 kJ/mol and 6 × 105–2.3 × 108 min−1 using the Ozawa-Flynn-Wall method and 58.19–74.82 kJ/mol and 4.1 × 102–4.2 × 103 min−1 applying Tang Wanjun equation. The activation energy was found to increase with enhancement in conversion presenting a complex decomposition reaction. Comparing the activation energy determined in this work with previous studies confirmed that natural clay has reduced E of decomposition reaction at high fraction conversion. The pyrolysis results supported with the kinetic investigation in this work would have potential applications in disposing of plastic waste on an industrial scale and a step forward in the field of waste management.
Funding source: Higher Education Commission, Pakistan
Award Identifier / Grant number: 20-1491
Acknowledgments
The authors are thankful to Mr. Sharafatullah Khan for providing clay sample for this work.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: Higher Education Commission, Pakistan is acknowledged for grant no. 20-1491.
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Conflicts of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
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Articles in the same Issue
- Frontmatter
- Material properties
- Investigation of the silica pore size effect on the performance of polysulfone (PSf) mixed matrix membranes (MMMs) for gas separation
- Understanding thermal and rheological behaviors of bimodal polymethyl methacrylate (BPMMA) fabricated via solution blending
- Kinetic study of the pyrolysis of polypropylene over natural clay
- Investigation of morphology and transport properties of Na+ ion conducting PMMA:PEO hybrid polymer electrolyte
- Preparation and assembly
- Designing of new hydrophilic polyurethane using the graft-polymerized poly(acrylic acid) and poly(2-(dimethylamino)ethyl acrylate)
- Water-soluble polymeric particle embedded cryogels: Synthesis, characterisation and adsorption of haemoglobin
- Durable anti-oil-fouling superhydrophilic membranes for oil-in-water emulsion separation
- A facile route to dual-crosslinking polymeric hydrogels with enhanced mechanical property
- Antifouling enhancement of polyacrylonitrile-based membrane grafted with poly(sulfobetaine methacrylate) layers
- Engineering and processing
- Non-isothermal blade coating analysis of viscous fluid with temperature-dependent viscosity using lubrication approximation theory
- In-mold lightweight integrating for structural/functional devices
