Waste plastics pyrolytic oil is a source of diesel fuel: A recent review on diesel engine performance, emissions, and combustion characteristics

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 886, P. 163756 - 163756

Published: May 3, 2023

Most waste plastics can be converted into automobile fuel through the pyrolysis process. Plastic oil (PPO) has a heating value comparable with commercial diesel. The properties of PPOs depend on parameters such plastic and reactor types, temperature, reaction time, rate, etc. This study reviews performance, emissions, combustion characteristic diesel engines fuelled neat PPO, PPO blends, oxygenated additives. higher viscosity density, sulphur content, lower flash point, cetane index an unpleasant odour. displays delay in ignition during premixed phase. literatures reported that run without any modification to engine. paper reveals brake specific consumption lowered by 17.88 % using Brake thermal efficiency reduced 17.26 while blends are used. Some studies say NOx emission up 63.02 %, however, others indicate it increased 44.06 compared when is used engines. highest reduction CO2 was found 47.47 diesel; conversely, increase documented as 13.04 only fuel. In summary, very high potential substitute for further research improving its post-treatment processing distillation hydrotreatment.

Language: Английский

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Climate resilience plastic degradation potential of Pseudomonas putida isolated from the soil of plastic waste dumping sites to reduce GHG emissions

Zeitschrift für Physikalische Chemie, Journal Year: 2024, Volume and Issue: 238(5), P. 797 - 807

Published: Feb. 11, 2024

Abstract Climate change is a universal issue and plastic trash the major cause of global warming. The present study was specifically designed to address escalating waste problem, biodegradation low-density polyethylene (LDPE) bags investigated over an 8-week period using liquid culture approach. Bacterial strain ( Pseudomonas putida ) capable degrading LDPE isolated from common garbage dumping sites. identified after sequencing analysis, as P. evaluated for its effectiveness in LDPE. Various analytical techniques, including weight loss, SEM, FTIR GC-MS were employed assess degradation process. Results revealed that bacterial achieved 0.0776 % degradation. SEM confirmed surface chemical changes, while GC MS by products comparison control (where no bacteria used).

Language: Английский

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Assessing the environmental footprint of plastic pyrolysis and gasification: A life cycle inventory study

Process Safety and Environmental Protection, Journal Year: 2023, Volume and Issue: 173, P. 592 - 603

Published: March 27, 2023

Chemical recycling is a promising technology that can help alleviate the environmental burdens of plastic waste. This paper developed comprehensive, scenario-based life cycle assessment (LCA) to quantify profile different management options treat polyethylene (PE) and polypropylene (PP), including landfill, pyrolysis, gasification. Using system expansion method inventory data from various sources, result showed recovery ethylene propylene monomers for re-manufacturing, which resembled closed-loop systems, offered highest benefits. Most notably, fossil fuel depletion, climate change, human toxicity impacts were 36,761%, 1063%, 329% lower than those landfill disposal, respectively. Open-loop scenarios, such as high-value chemical (HVC) energy pyrolysis gasification, also investigated. Amongst these HVC was most environmentally favourable, followed by using Energy scenarios limited benefits had worse results in terrestrial acidification, freshwater marine eutrophication impact categories. The main driver during end-of-life treatment consumption needed achieve appropriate temperature necessary reactions take place. In terms material consumption, use nitrogen gas purge reactor biggest contributor whereas zeolite usage accounts majority

Language: Английский

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Investigation of gasoline-like transportation fuel obtained by plastic waste pyrolysis and distillation

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 447, P. 141500 - 141500

Published: March 4, 2024

Gasoline-like hydrocarbon products obtained from the distillation of different pyrolysis oils produced solid wastes polypropylene (PP), polystyrene (PS), polyethylene (PE), and their blends were investigated as these materials together form a good candidate for providing gasoline with properties approaching or fulfilling standard requirements in various countries. A laboratory-scale batch reactor equipped reflux was used this research, while fractions processed by further analyzed GC-MS. Fuel density, volatility, curves, olefin content, aromatics (including benzene) oxygenates analyzed, scenarios proposed reaching quality. The results compared to commercial sample Hungary. It found that gasoline-like product low-density PE (LDPE) high-density (HDPE) showed most similarities regarding molecular distribution. PS mainly aromatics, yield PP contained 53.5 vol% 2,4-dimethyl-1-heptene, which severely affects presented fuel standards. show mass ratio plastic process can heavily influence oil products' applicability transportation fuel. optimal waste mixture combined saturation content catalytic hydrogenation provide standard-quality gasoline.

Language: Английский

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An Aspen plus process simulation model for exploring the feasibility and profitability of pyrolysis process for plastic waste management

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 355, P. 120557 - 120557

Published: March 1, 2024

Plastics, integral to various human activities, have led a surge in production, posing substantial challenges waste management. The persistent non-biodegradability of plastics, taking over century decompose, necessitates exploration into technologies for their conversion sustainable fuels. Pyrolysis, an oxygen-free thermal decomposition process, emerges as promising avenue producing liquid fuels from plastic waste. This study's primary objective is create and validate Aspen Plus simulation model, enabling techno-economic evaluation sensitivity analysis pyrolysis converting plastics Critical parameters—temperature, retention time, particle size—are examined impact on product yield quality. methodology involves model development, validation, subsequent simulations with types under different conditions. Experimental investigation using high-density polyethylene (HDPE) auger reactor yielded oil 61.29%, char 10.98%, syngas 27.73% at 525 °C. Post-validation against this data, the explored four types, revealing significant influences type temperature yields. Polystyrene (PS) 500 °C produced highest content 83.69%, affecting before secondary cracking. Techno-economic plant processing 10,000 tons HDPE annually indicated minimum selling price (MSP) $302.50/ton, net present value (NPV) $12,594,659.7, 1.03-year payback period. study provides crucial insights designing economically viable guiding further research industrial implementation.

Language: Английский

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A review on the pyrolytic conversion of plastic waste into fuels and chemicals

Journal of Analytical and Applied Pyrolysis, Journal Year: 2024, Volume and Issue: 179, P. 106479 - 106479

Published: March 26, 2024

Language: Английский

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Pyrolysis of mixed engineering plastics: Economic challenges for automotive plastic waste

Waste Management, Journal Year: 2024, Volume and Issue: 176, P. 105 - 116

Published: Jan. 26, 2024

Chemical recycling of complex plastic waste via pyrolysis can reduce fossil resource dependence the plastics value chain and greenhouse gas emissions. However, economic viability is crucial for its implementation, especially considering challenging streams with high shares engineering that have lower product quality than standard thermoplastics waste. Thus, this study conducts a techno-economic assessment determining profitability factors plants automotive in Germany including different plant capacities calculating cost-covering minimum sales prices resulting oil. Main findings are due to economies scale, vary between 1182 €/Mg oil (3750 Mg input/year) 418 (100,000 input/year). The technology employed must be robust scalable realize these scale. Large face challenges such as feedstock availability at reasonable costs, constant quality, affecting pricing. Due limited yield produced from technically demanding feedstocks, policy implications additional revenue gate fees or subsidies essential ensure positive business case necessary. Depending on assessed capacity, revenues 720 59 should realized competitive price reference heavy fuel Otherwise, environmental potential cannot exploited.

Language: Английский

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Pyrolysis of plastic waste for sustainable energy Recovery: Technological advancements and environmental impacts

Energy Conversion and Management, Journal Year: 2025, Volume and Issue: 326, P. 119511 - 119511

Published: Jan. 16, 2025

Language: Английский

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“Microwave-assisted pyrolysis of waste LDPE: unveiling the role of induced gas-solid thermal gradients on pyrolysis oil product distribution”.

Journal of Analytical and Applied Pyrolysis, Journal Year: 2025, Volume and Issue: unknown, P. 106984 - 106984

Published: Jan. 1, 2025

Language: Английский

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Catalytic pyrolysis of plastic waste to gasoline, jet fuel and diesel with nano MOF derived-loaded Y zeolite: Evaluation of temperature, zeolite crystallization and catalyst loading effects

Energy Conversion and Management, Journal Year: 2023, Volume and Issue: 299, P. 117825 - 117825

Published: Nov. 10, 2023

Language: Английский

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