Catalytic pyrolysis of polyoleﬁn and multilayer packaging based waste plastics: A pilot scale study

Sivagami, K.; Divyapriya, Govindaraj; Selvaraj, Ramya; Madhiyazhagan, P.; Sriram, N.; Nambi, Indumathi M.

doi:10.1016/j.psep.2020.10.038

Cited by 47 publications

(19 citation statements)

References 49 publications

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“…Among all these types of catalysts, ZSM-5 showed the highest yield of oil reaching 70%. In addition, it was noticed in the studies that the concentration of ZSM-5 has significant impact on the yield [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Pyrolysis Kinetic Behavior and TG-FTIR-GC–MS Analysis of Metallized Food Packaging Plastics with Different Concentrations of ZSM-5 Zeolite Catalyst

et al. 2021

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Recently, the pyrolysis process has been adapted as a sustainable strategy to convert metallized food packaging plastics waste (MFPW) into energy products (paraffin wax, biogas, and carbon black particles) and to recover aluminum. Usually, catalysts are used in pyrolysis treatment to refine pyrolysis products and to increase their yield. In order to study the effect of a catalyst on the formulated volatile products, this work aims to study the pyrolysis behavior of MFPW in presence of catalyst, using TG-FTIR-GC–MS system. The pyrolysis experiments were conducted with ZSM-5 Zeolite catalyst with different concentrations (10, 30, and 50 wt.%) at different heating rates (5, 10, 15, 20, 25, and 30 °C/min). In addition, TG-FTIR system and GC-MS unit were used to observe and analyze the thermal and chemical degradation of the obtained volatile compounds at maximum decomposition peaks. In addition, the kinetic results of catalytic pyrolysis of ZSM-5/MFPW samples matched when model-free methods, a distributed activation energy model (DAEM), and an independent parallel reaction kinetic model (IPR) were used. The TGA-DTG results showed that addition of a catalyst did not have a significant effect on the features of the TGA-DTG curves with similar weight loss of 87–90 wt.% (without taking the weight of the catalyst into account). Meanwhile, FTIR results manifested strong presence of methane and high-intensity functional group of carboxylic acid residues, especially at high concentration of ZSM-5 and high heating rates. Likewise, GC-MS measurements showed that Benzene, Toluene, Hexane, p-Xylene, etc. compounds (main flammable liquid compounds in petroleum oil) generated catalysts exceeding 50%. Finally, pyrolysis kinetics showed that the whole activation energies of catalytic pyrolysis process of MFPW were estimated at 289 kJ/mol and 110, 350, and 174 kJ/mol for ZSM-5/MFPW samples (10, 30, and 50 wt.%, respectively), whereas DAEM and IPR approaches succeeded to simulate TGA and DTG profiles with deviations below <1.

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Section: Introductionmentioning

confidence: 99%

Catalytic Pyrolysis Kinetic Behavior and TG-FTIR-GC–MS Analysis of Metallized Food Packaging Plastics with Different Concentrations of ZSM-5 Zeolite Catalyst

et al. 2021

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“…A future full-scale plant is expected down the line. Pyrolysis has also been tested with multi-layered packaging (MLP) waste using commercial zeolite catalyst in pilot scale, which suggests that biaxial oriented polypropylene MLPs can produce more than 70% oil [ 48 ]. Jectec, a Japan-based company, is also implementing pyrolysis for treatment of cable wires [ 49 ].…”

Section: Proposed Resource Resurgence Framework For Covid-waste Managementmentioning

confidence: 99%

Resource Resurgence from COVID-19 Waste via Pyrolysis: a Circular Economy Approach

Debnath

Ghosh²,

Dutta

2021

Circ.Econ.Sust.

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Since the end of 2019, COVID-19 pandemic has affected 220 countries and currently majority of the world is facing the wrath of the second wave. One of the outcomes of the ongoing pandemic is the generation of huge amount of solid polymeric “COVID-waste” comprising medical waste, personal protective equipment (PPE) waste, packaging waste, and other household waste with potential infectious components residing on it. Thermochemical route is the preferred treatment and effective way of disposal of such infectious polymeric waste. Typically, incineration is employed to ensure complete destruction of the pathogens which is not a resource-efficient method. Pyrolysis is a sustainable alternative which can handle the present COVID-waste stream in short-term and long-term yielding valuable fuel and material products. Recently published literature in this avenue have clearly shown the versatility of this technology in efficiently handling both mono and mixed stream of polymers. Based on facts, we propose a resource resurgence framework that utilizes pyrolysis as the core conversion route for effectively handling COVID-waste streams. Our framework suggests how these plants can be operational and helpful in generation of revenue in post-pandemic times as well. We expect that the conscientious adoption of pyrolysis will certainly lead us towards a circular economy paradigm.

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“…A limitation of most literature concerning catalytic cracking is that it has not been applied to real plastic waste streams, but work has begun on developing strategies for mixed plastic waste streams [172,[192][193][194]. Sivagami et al [195] assessed the catalytic pyrolysis of multi-layered plastics wastes: BOPP, metalized biaxial oriented polypropylene (MET/BOPP), PET, metalized polyethylene terepthlate (MET/PET), PET combined polyethylene (PET/PE), and mixed PO plastic waste, in the presence of a zeolite catalysts at pilot scale. They found that BOPP-based plastics gave a higher oil yield and calorific values compared to PET-based multi-layered plastics.…”

Section: Chemical Recycling Of Posmentioning

confidence: 99%

Polyolefins and Polyethylene Terephthalate Package Wastes: Recycling and Use in Composites

et al. 2021

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Plastics are versatile materials used in a variety of sectors that have seen a rapid increase in their global production. Millions of tonnes of plastic wastes are generated each year, which puts pressure on plastic waste management methods to prevent their accumulation within the environment. Recycling is an attractive disposal method and aids the initiative of a circular plastic economy, but recycling still has challenges to overcome. This review starts with an overview of the current European recycling strategies for solid plastic waste and the challenges faced. Emphasis lies on the recycling of polyolefins (POs) and polyethylene terephthalate (PET) which are found in plastic packaging, as packaging contributes a signification proportion to solid plastic wastes. Both sections, the recycling of POs and PET, discuss the sources of wastes, chemical and mechanical recycling, effects of recycling on the material properties, strategies to improve the performance of recycled POs and PET, and finally the applications of recycled POs and PET. The review concludes with a discussion of the future potential and opportunities of recycled POs and PET.

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Catalytic pyrolysis of polyoleﬁn and multilayer packaging based waste plastics: A pilot scale study

Cited by 47 publications

References 49 publications

Catalytic Pyrolysis Kinetic Behavior and TG-FTIR-GC–MS Analysis of Metallized Food Packaging Plastics with Different Concentrations of ZSM-5 Zeolite Catalyst

Catalytic Pyrolysis Kinetic Behavior and TG-FTIR-GC–MS Analysis of Metallized Food Packaging Plastics with Different Concentrations of ZSM-5 Zeolite Catalyst

Resource Resurgence from COVID-19 Waste via Pyrolysis: a Circular Economy Approach

Polyolefins and Polyethylene Terephthalate Package Wastes: Recycling and Use in Composites

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