Recent trends in utilization of plastics waste composites as construction materials

Mohan, Harish T.; Jayanarayanan, Karingamanna; Mini, K.M.

doi:10.1016/j.conbuildmat.2020.121520

Cited by 60 publications

(27 citation statements)

References 64 publications

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“…When plastic waste is transformed into these new products, there are many essential factors that need to be considered, as the addition of plastic waste can affect the performance of the composite materials produced [238]. In particular, the scientific community has focused on suggesting alternatives for the inclusion of plastic waste in various sectors, such as construction materials [238][239][240][241][242], ultrafiltration membranes for water treatment [243][244][245], 3D printing [246][247][248][249], components in asphalt [250][251][252][253], wallpaper [254], and the agricultural sector [255], among others, as shown in Figure 3. Plastic waste can also be recycled and used to make composite materials.…”

Section: Accumulation Of Plastic Waste In the Environmentmentioning

confidence: 99%

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

et al. 2021

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Plastics are ubiquitous in our society and are used in many industries, such as packaging, electronics, the automotive industry, and medical and health sectors, and plastic waste is among the types of waste of higher environmental concern. The increase in the amount of plastic waste produced daily has increased environmental problems, such as pollution by micro-plastics, contamination of the food chain, biodiversity degradation and economic losses. The selective and efficient conversion of plastic waste for applications in environmental remediation, such as by obtaining composites, is a strategy of the scientific community for the recovery of plastic waste. The development of polymeric supports for efficient, sustainable, and low-cost heterogeneous catalysts for the treatment of organic/inorganic contaminants is highly desirable yet still a great challenge; this will be the main focus of this work. Common commercial polymers, like polystyrene, polypropylene, polyethylene therephthalate, polyethylene and polyvinyl chloride, are addressed herein, as are their main physicochemical properties, such as molecular mass, degree of crystallinity and others. Additionally, we discuss the environmental and health risks of plastic debris and the main recycling technologies as well as their issues and environmental impact. The use of nanomaterials raises concerns about toxicity and reinforces the need to apply supports; this means that the recycling of plastics in this way may tackle two issues. Finally, we dissert about the advances in turning plastic waste into support for nanocatalysts for environmental remediation, mainly metal and metal oxide nanoparticles.

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Section: Accumulation Of Plastic Waste In the Environmentmentioning

confidence: 99%

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

et al. 2021

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“…The large quantity of Polyethylene Terephthalate (PET) bottles leads to more waste materials, and this waste causes environmental issues. In the last years, most authors were concentrated on recycling Pw to solve the problems mentioned above [22], [23], and [24]. Plastic production was raised by 500% in the past 30 years worldwide, while plastic used-up has raised by 50% in the past decenniums.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Enhancement of Concrete by Using Waste-Plastic Food -Packages as Economic and Environmentally Friendly Fibers, A Review.

Abdulhussein¹,

Abdulghani²

2022

Al-Rafidain J Sci

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Among possible solutions for a cleaner environment is reduction of using non-biodegradable materials to reduce the waste. Solid plastic waste is considered the most important kind of waste in the world, due to its non-decadence and its low organic decomposability. Therefore, it was advised to use this waste as reinforcing materials for concrete units, as it was used as a substitute for moraine in certain proportions and also as reinforcing fibers for concrete. This paper is a review of research investigations that focused on and highlighted the improvement of concrete by recycling waste-plastic food-package and using them as reinforcing fibers for concrete specimens. The impact of plastic waste fibers (PWFs) on workability, compressibility resistance, tensibility resistance, bending resistance, and elastic modulus are demonstrated. It has been noted that the fresh characteristics of concrete decline when mixing plastic fibers with concrete mixtures, while hardened characteristics could be improved by utilizing specific proportion of these fibers

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“…[7] As a result, mechanical recycling methods have usually been adopted to prepare products like composites for construction, where a greater variance and tolerance in the product quality are common. [8] In contrast, a more sustainable and desirable approach is to upcycle waste plastics. Unlike recycling, upcycling must create products with higher quality from the waste plastics so that there will be additional practical and economic benefits.…”

Section: Introductionmentioning

confidence: 99%

“…[17b,c,20] In this work, our intention is to critically assess the potential of exploiting alternative energy sources to chemically upcycle waste plastics more sustainably. Our literature review was directed towards photocatalytic, [17b,c,20] electrolytic, [15b] and microwave-assisted pyrolysis (MAP) [8] processes as more environmentally friendly alternatives to conventional thermal pyrolysis. These approaches can potentially be coupled with renewable energy sources such as solar, wind, ocean, geothermal, hydroelectric, and bioenergy, and may even be able to operate at ambient temperatures and pressures (Figure 1).…”

Section: Introductionmentioning

confidence: 99%

Current Developments in the Chemical Upcycling of Waste Plastics Using Alternative Energy Sources

et al. 2021

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The management of plastics waste is one of the most urgent and significant global problems now. Historically, waste plastics have been predominantly discarded, mechanically recycled, or incinerated for energy production. However, these approaches typically relied on thermal processes like conventional pyrolysis, which are energy-intensive and unsustainable. In this Minireview, some of the latest advances and future trends in the chemical upcycling of waste plastics by photocatalytic, electro-lytic, and microwave-assisted pyrolysis processes are discussed as more environmentally friendly alternatives to conventional thermal reactions. We highlight how the transformation of different types of plastics waste by exploiting alternative energy sources can generate value-added products such as fuels (H 2 and other carbon-containing small molecules), chemical feedstocks, and newly functionalized polymers, which can contribute to a more sustainable and circular economy.

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Recent trends in utilization of plastics waste composites as construction materials

Cited by 60 publications

References 64 publications

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

Sustainable Enhancement of Concrete by Using Waste-Plastic Food -Packages as Economic and Environmentally Friendly Fibers, A Review.

Current Developments in the Chemical Upcycling of Waste Plastics Using Alternative Energy Sources

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