A comprehensive review on the production of alternative fuel through medical plastic waste

Kumar, Amit; Pali, Harveer Singh; Kumar, Manoj

doi:10.1016/j.seta.2022.102924

Cited by 17 publications

(7 citation statements)

References 164 publications

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“…In addition, exploring biodegradable or compostable alternatives to PET and promoting practices that facilitate the decomposition of organic waste is encouraged [67]. In the context of medical plastic waste management, Kumar et al (2023) proposed a distinctive 5R strategy (Table 1): refuse, reduce, reuse, repurpose, and recycle. The repurpose principle encourages finding innovative uses for PET items, such as using PET bottles or containers for different applications [68].…”

Section: The 5r Frameworkmentioning

confidence: 99%

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Polyethylene Terephthalate (PET) Recycled by Catalytic Glycolysis: A Bridge toward Circular Economy Principles

Enache,

Grecu,

Samoila

2024

Materials

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Plastic pollution has escalated into a critical global issue, with production soaring from 2 million metric tons in 1950 to 400.3 million metric tons in 2022. The packaging industry alone accounts for nearly 44% of this production, predominantly utilizing polyethylene terephthalate (PET). Alarmingly, over 90% of the approximately 1 million PET bottles sold every minute end up in landfills or oceans, where they can persist for centuries. This highlights the urgent need for sustainable management and recycling solutions to mitigate the environmental impact of PET waste. To better understand PET’s behavior and promote its management within a circular economy, we examined its chemical and physical properties, current strategies in the circular economy, and the most effective recycling methods available today. Advancing PET management within a circular economy framework by closing industrial loops has demonstrated benefits such as reduced landfill waste, minimized energy consumption, and conserved raw resources. To this end, we identified and examined various strategies based on R-imperatives (ranging from 3R to 10R), focusing on the latest approaches aimed at significantly reducing PET waste by 2040. Additionally, a comparison of PET recycling methods (including primary, secondary, tertiary, and quaternary recycling, along with the concepts of “zero-order” and biological recycling techniques) was envisaged. Particular attention was paid to the heterogeneous catalytic glycolysis, which stands out for its rapid reaction time (20–60 min), high monomer yields (>90%), ease of catalyst recovery and reuse, lower costs, and enhanced durability. Accordingly, the use of highly efficient oxide-based catalysts for PET glycolytic degradation is underscored as a promising solution for large-scale industrial applications.

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Section: The 5r Frameworkmentioning

confidence: 99%

“…In the context of medical plastic waste management, Kumar et al (2023) proposed a distinctive 5R strategy (Table 1): refuse, reduce, reuse, repurpose, and recycle. The repurpose principle encourages finding innovative uses for PET items, such as using PET bottles or containers for different applications [68].…”

Section: The 5r Frameworkmentioning

confidence: 99%

Polyethylene Terephthalate (PET) Recycled by Catalytic Glycolysis: A Bridge toward Circular Economy Principles

Enache,

Grecu,

Samoila

2024

Materials

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“…Meanwhile, our dependence on fossil fuels for transportation, energy, and countless other applications rapidly depletes these finite resources. This constant drain not only threatens energy security but also triggers climate change as greenhouse gas emissions soar [1,2]. Researchers strive to improve the development of novel materials and techniques for optimal utilization of regional resources as alternative fuels.…”

Section: Introductionmentioning

confidence: 99%

Studies on CRDI diesel engine performance and emissions using waste plastic oil and fly ash catalyst

Abdul munaf,

Velmurugan,

Loganathan

et al. 2024

Eng. Res. Express

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Fossil fuels are quickly draining on a daily basis, causing fuel product prices to increase throughout the world. There is a crucial need to develop new alternate fuels from various sources that meet our daily requirements, like industries, mining, building construction, transportation, electric power generation from rural areas, etc. In the present study, mono-use low density polyethylene (LDPE) was successfully transformed into a liquid form of hydrocarbon fuel with fly ash-supported catalytic pyrolysis. The ratio of 0.1 with reference to catalyst-to-feedstock was fixed for the preparation of waste plastic oil (WPO) using batch-type pyrolysis reactors. About 180°C was the temperature at which the extracted crude oil was segregated. The diesel fuel's properties and those of the WPO fuel were compared and evaluated. Experiments were carried out using diesel-WPO mixed fuel (10%, 20%, 30%, and 40%) in a multi-cylinder, water-cooled Common Rail Direct Injection (CRDI) diesel engine. Additionally, the impact of the compression and mixing ratios on performance, emission characteristics, and combustion was studied. We observed significant improvement in the results of BTE and BSFC for the tested fuel blend, D80WPO20, compared to other blends. Additionally, it has been demonstrated that the emissions of CO, HC, and NOx rise with an increasing fuel mixing ratio. Based on the analysis carried out on performance and emissions, it was determined that D80WPO20 was the best combination.

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“…Another option is to convert plastic waste into fuel through a process called pyrolysis [15]. In addition to above, plastic waste can also be used to generate energy through triboelectric nanogenerator technology, which is a promising new technology that harnesses the power of friction to generate electricity.…”

Section: Introductionmentioning

confidence: 99%

“…[11][12][13][14] Another option is to convert plastic waste into fuel through a process called pyrolysis. 15 In addition to the above, plastic waste can also be used to generate energy through triboelectric nanogenerator technology, which is a promising new technology that harnesses the power of friction to generate electricity. This technology utilizes plastic materials to create an active triboelectric layer that can produce electrical energy through contact electrication and electrostatic induction.…”

Section: Introductionmentioning

confidence: 99%

A medical waste X-ray film based triboelectric nanogenerator for self-powered devices, sensors, and smart buildings

Navaneeth

Potu

Babu

et al. 2023

Environ. Sci.: Adv.

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A comprehensive review on the production of alternative fuel through medical plastic waste

Cited by 17 publications

References 164 publications

Polyethylene Terephthalate (PET) Recycled by Catalytic Glycolysis: A Bridge toward Circular Economy Principles

Polyethylene Terephthalate (PET) Recycled by Catalytic Glycolysis: A Bridge toward Circular Economy Principles

Studies on CRDI diesel engine performance and emissions using waste plastic oil and fly ash catalyst

A medical waste X-ray film based triboelectric nanogenerator for self-powered devices, sensors, and smart buildings

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