A review on converting plastic wastes into clean hydrogen via gasification for better sustainability

The urbanization process contributes to the growth of solid waste generation and causes an increase in environmental impacts and failures in the management of solid waste. The number of dumps is a concern due to the limited implementation and safe disposal of this waste. The interest in sustainable techniques has been growing in relation to waste management, which is largely absorbed by the civil construction sector. This work aimed to review plastic waste, especially polyethylene terephthalate (PET), that can be incorporated with construction materials, such as concrete, mortars, asphalt mixtures, and paving. The use of life-cycle assessment (LCA) is related, as a tool that allows the sustainability of products and processes to be enhanced in the long term. After analyzing the recent literature, it was identified that studies related to plastic wastes in construction materials concentrate sustainability around the alternative destination of waste. Since the plastic waste from different production chains are obtained, it was possible to affirm the need for a broader assessment, such as the LCA, providing greater quantification of data making the alternative processes and products more sustainable. The study contributes to enhance sustainability in alternative building materials through LCA.

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Simultaneous production of aromatics-rich bio-oil and carbon nanomaterials from catalytic co-pyrolysis of biomass/plastic wastes and in-line catalytic upgrading of pyrolysis gas

Waste Management ◽

10.1016/j.wasman.2020.12.008 ◽

2021 ◽

Vol 121 ◽

pp. 95-104

Author(s):

Dan Xu ◽

Siyuan Yang ◽

Yinhai Su ◽

Lei Shi ◽

Shuping Zhang ◽

...

Keyword(s):

Carbon Nanomaterials ◽

Pyrolysis Gas ◽

Catalytic Upgrading ◽

Simultaneous Production ◽

Bio Oil ◽

Plastic Wastes ◽

Pyrolysis Of Biomass

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Gasification of blended coal, biomass and plastic wastes to produce hydrogen (DOE)

Federal Grants & Contracts ◽

10.1002/fgc.31324 ◽

2020 ◽

Vol 44 (21) ◽

pp. 5-5

Keyword(s):

Blended Coal ◽

Plastic Wastes

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Potential Chemicals from Plastic Wastes

Molecules ◽

10.3390/molecules26113175 ◽

2021 ◽

Vol 26 (11) ◽

pp. 3175

Author(s):

Ravindra Prajapati ◽

Kirtika Kohli ◽

Samir K. Maity ◽

Brajendra K. Sharma

Keyword(s):

Environmental Protection Agency ◽

State Of The Art ◽

Plastic Waste ◽

Chemical Production ◽

Protection Agency ◽

Medical Apparatus ◽

Plastic Materials ◽

Future System ◽

Plastic Wastes ◽

The U.S

Plastic is referred to as a “material of every application”. From the packaging and automotive industries to the medical apparatus and computer electronics sectors, plastic materials are fulfilling demands efficiently. These plastics usually end up in landfills and incinerators, creating plastic waste pollution. According to the Environmental Protection Agency (EPA), in 2015, 9.1% of the plastic materials generated in the U.S. municipal solid waste stream was recycled, 15.5% was combusted for energy, and 75.4% was sent to landfills. If we can produce high-value chemicals from plastic wastes, a range of various product portfolios can be created. This will help to transform chemical industries, especially the petrochemical and plastic sectors. In turn, we can manage plastic waste pollution, reduce the consumption of virgin petroleum, and protect human health and the environment. This review provides a description of chemicals that can be produced from different plastic wastes and the research challenges involved in plastic waste to chemical production. This review also provides a brief overview of the state-of-the-art processes to help future system designers in the plastic waste to chemicals area.

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