A lab scale waste to energy conversion study for pyrolysis of plastic with and without catalyst: Engine emissions testing study

Singh, Thokchom Subhaschandra; Verma, Tikendra Nath; Singh, Harshavardhan

doi:10.1016/j.fuel.2020.118176

Cited by 45 publications

(16 citation statements)

References 35 publications

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“…On the other hand, the solid fraction decreases with the increase in temperature of 32.22% ( w / w ) at 350 °C, decreasing by 2.70% ( w / w ) at 450 °C. It should be noted that the liquid fraction at different temperatures shows the presence of waxes and gums, in accordance with what was stated by other authors [ 36 , 37 ].…”

Section: Resultssupporting

confidence: 92%

“…A difference can be observed in the performance of the liquid fraction obtained between PP and PE, a difference that is also presented by the author of [ 8 ] in his study where he analyzes the pyrolysis of individual plastics and pure plastics. The values can be attributed to the methyl radical of the PP, since in the breaking of the bonds the radical will guide the formation of short gaseous chains [ 36 , 37 ]. In Figure 8 , the most abundant hydrocarbon compounds in the analyzed sample are formed by carbons >C12–C28, which indicate that the liquid/wax fraction is rich in diesel-range hydrocarbons [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

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Production and Analysis of the Physicochemical Properties of the Pyrolytic Oil Obtained from Pyrolysis of Different Thermoplastics and Plastic Mixtures

et al. 2022

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The constant search for the proper management of non-degradable waste in conjunction with the circular economy makes the thermal pyrolysis of plastics an important technique for obtaining products with industrial interest. The present study aims to produce pyrolytic oil from thermoplastics and their different mixtures in order to determine the best performance between these and different mixtures, as well as to characterize the liquid fraction obtained to analyze its use based on said properties. This was carried out in a batch type reactor at a temperature of 400 °C for both individual plastics and their mixtures, from which the yields of the different fractions are obtained. The liquid fraction of interest is characterized by gas chromatography and its properties are characterized by ASTM standards. The product of the pyrolysis of mixtures of 75% polystyrene and 25% polypropylene presents a yield of 82%, being the highest, with a viscosity of 1.12 cSt and a calorific power of 42.5 MJ/kg, which has a composition of compounds of carbon chains ranging between C6 and C20, for which it is proposed as a good additive agent to conventional fuels for industrial use.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Production and Analysis of the Physicochemical Properties of the Pyrolytic Oil Obtained from Pyrolysis of Different Thermoplastics and Plastic Mixtures

et al. 2022

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“…In addition, the pressure in the combustion chamber of the engine depends on the burning rate of the fuel during the premixed burning phase. 40 Obviously, a longer ignition delay at the start of combustion was obtained with WPOB, resulting in the higher peak of ICP and RoHR compared to that of diesel fuel. 41 Such combustion characteristics of WPOB are not favorable to the ideal combustion process and can have adverse effects on exhaust gas emissions.…”

Section: Resultsmentioning

confidence: 96%

Utilizing Waste Plastic Bottle-Based Pyrolysis Oil as an Alternative Fuel

et al. 2022

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In the present work, an experimental investigation is carried out on the use of waste plastic oil produced from waste poly(ethylene terephthalate) (PET) bottles (WPOB) as an alternative fuel for diesel engines. The physical and chemical properties of WPOB were analyzed, and it was found that it has fuel properties similar to those of petroleum fuels. The WPOB was tested in a diesel engine to evaluate the effect of WPOB on combustion and emissions characteristics. In addition, particulate matter (PM) emissions generated by the combustion of WPOB were analyzed. The combustion of WPOB was retarded with respect to diesel fuel, resulting in higher carbon-based emissions. The thermogravimetric analysis (TGA) results show that the temperature to reach the maximum rate of soot oxidation was lower with WPOB combustion. Because of the significant delay at the start of combustion and increase in emissions, the direct use of WPOB in the diesel engine is not recommended. It is suggested that WPOB can be used as a blend component to reduce the amount of diesel fuel used in diesel engines. Thus, further study on the effect of diesel fuel blended with WPOB on the combustion and emissions characteristics was performed. The results reveal that the maximum WPOB present in diesel fuel to avoid the increase in carbon-based emissions is 20% by volume to keep combustion and emissions characteristics similar to those of diesel fuel.

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“…There are different methods that have been used to transform plastic waste into porous carbons such as using gasification, direct carbonization (physical or chemical activation), hydrothermal carbonization and pyrolysis [18,46]. Among the various technologies available for plastics waste treatment, pyrolysis is one of the most promising methods and the process can be carried out with or without catalysts [77]. Plastics are among the most valuable types of waste, and it is possible to convert plastics directly into useful forms of new adsorbent material, energy, and chemicals for an industry, known as "pyrolysis".…”

Section: Conversion Of Plastic Waste Into a Carbon-based Materialsmentioning

confidence: 99%

Transforming Plastic Waste into Porous Carbon for Capturing Carbon Dioxide: A Review

et al. 2021

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Plastic waste generation has increased dramatically every day. Indiscriminate disposal of plastic wastes can lead to several negative impacts on the environment, such as a significant increase in greenhouse gas emissions and water pollution. Therefore, it is wise to think of other alternatives to reduce plastic wastes without affecting the environment, including converting them into valuable products using effective methods such as pyrolysis. Products from the pyrolysis process encompassing of liquid, gas, and solid residues (char) can be turned into beneficial products, as the liquid product can be used as a commercial fuel and char can function as an excellent adsorbent. The char produced from plastic wastes could be modified to enhance carbon dioxide (CO2) adsorption performance. Therefore, this review attempts to compile relevant knowledge on the potential of adsorbents derived from waste plastic to capture CO2. This review was performed in accordance with PRISMA guidelines. The plastic-waste-derived activated carbon, as an adsorbent, could provide a promising method to solve the two environmental issues (CO2 emission and solid management) simultaneously. In addition, the future perspective on char derived from waste plastics is highlighted.

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A lab scale waste to energy conversion study for pyrolysis of plastic with and without catalyst: Engine emissions testing study

Cited by 45 publications

References 35 publications

Production and Analysis of the Physicochemical Properties of the Pyrolytic Oil Obtained from Pyrolysis of Different Thermoplastics and Plastic Mixtures

Production and Analysis of the Physicochemical Properties of the Pyrolytic Oil Obtained from Pyrolysis of Different Thermoplastics and Plastic Mixtures

Utilizing Waste Plastic Bottle-Based Pyrolysis Oil as an Alternative Fuel

Transforming Plastic Waste into Porous Carbon for Capturing Carbon Dioxide: A Review

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