Thermogravimetric analysis of the pyrolysis characteristics and kinetics of plastics and biomass blends

Oyedun, Adetoyese Olajire; Tee, C. Z.; Hanson, Svenja; Hui, Chi Wai

doi:10.1016/j.fuproc.2014.08.010

Cited by 180 publications

(62 citation statements)

References 21 publications

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“…In order to quantify the degree of synergism, the relative error Dm erro (Eq. (2)) was determined according to Oyedun et al [44]. M and x refer, respectively, to the mass loss of pure components (m 1 and m 2 ) or the mixture (m Blend ) and to mass fractions (x 1 and x 2 ) of each component in the mixture.…”

Section: Synergismmentioning

confidence: 99%

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Galina¹,

Luna

Arce³

et al. 2019

Journal of the Energy Institute

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Biomass and coal have different physicochemical properties and thermal behavior. During the co-combustion of coal-biomass mixtures, their thermal behavior varies according to the percentage of each fuel in the mixture. Thereby, this research aims to characterize the thermal behavior of mixtures of coal, sugarcane bagasse, and biomass sorghum bagasse as biomass in simulated combustion (O 2 /N 2) and oxy-fuel combustion (O 2 /CO 2) environments. Experiments have been performed in duplicate on a thermogravimetric analyzer at heating rate of 10 C/min. A uniform granulometry was considered for all materials (63 mm) in order to ensure a homogeneous mixture. Four biomass percentages in the mixture (10, 25, 50 and 75%) have been studied. Based on thermogravimetric (TG) and thermogravimetric (DTG) analyses, parameters such as combustion index, synergism, and activation energy have been determined, as well as the combustion environment influence on these parameters. The results indicate that, although sugarcane bagasse has the lowest activation energy, the thermal behavior of both types of biomass is similar. Thus, biomass sorghum bagasse can be used as an alternative biomass to supply the power required during sugarcane off-season. For both mixtures, optimal results were obtained at 25% of biomass. By analyzing the environment influence on combustion behavior, the results indicate that when N 2 is replaced with CO 2 , it is observed an increase in reaction reactivity, a higher oxidation rate of materials and an improvement in evaluated parameters.

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Section: Synergismmentioning

confidence: 99%

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Galina¹,

Luna

Arce³

et al. 2019

Journal of the Energy Institute

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“…Many authors gave TG curves for biomass, wood and different types of plastics [75]- [77], [80], [85], [89], [92], [100], [107], [116], [117], [119], [121]- [124]. Figure 6 gives the TG and DSC curves as a function of temperature of HDPE, PS, PVC and for poplar wood (PW) and a waste wood sample (W3).…”

Section: Properties and Thermogravimetric Behavior Of Plastics And Bimentioning

confidence: 99%

Co-pyrogasification of Plastics and Biomass, a Review

Block¹,

Ephraim

Weiss-Hortala

et al. 2018

Waste Biomass Valor

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Over the past few decades, the sharp rise in post-consumer plastic and biomass waste has resulted in an ever growing challenge to treat such waste sustainably. Co-pyrogasification of plastics and biomass mixtures, as opposed to separately converting these waste streams, offers several advantages including an improvement in syngas quality and composition (H2/CO ratio) in relation to the desired application, and an easier reactor feeding of plastics. Furthermore, many studies have shown that co-pyrogasification promotes the conversion of waste to gas rather than char and tar. However, in order to achieve the desired product distribution or syngas composition, operating parameters such as the reactor temperature, equivalence ratio (air or oxygen), steam/fuel ratio and catalyst, have to be optimized. Thus, this paper aims to review literature studies on the co-pyrogasification of plastics and biomass by considering various aspects including the process principle, reactors, influence of feedstock characteristics and operating parameters on the products, as well as the synergies observed during the thermoconversion of plastics and biomass mixtures with some reference to coal mixtures when necessary.

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“…There is an increasing interest in co-pyrolysis of biomass and plastic mixtures in recent years. Biomass fractions in MSW can be co-pyrolyzed with plastics such as polyethylene, polypropylene and polystyrene to produce various chemicals and fuels (Oyedun et al, 2014a(Oyedun et al, , 2014bXue et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric and calorimetric characteristics during co-pyrolysis of municipal solid waste components

2016

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The thermogravimetric and calorimetric characteristics during pyrolysis of wood, paper, textile and polyethylene terephthalate (PET) plastic in municipal solid wastes (MSW), and co-pyrolysis of biomass-derived and plastic components with and without torrefaction were investigated. The active pyrolysis of the PET plastic occurred at a much higher temperature range between 360°C and 480°C than 220-380°C for the biomass derived components. The plastic pyrolyzed at a heating rate of 10°C/min had the highest maximum weight loss rate of 18.5wt%/min occurred at 420°C, followed by 10.8wt%/min at 340°C for both paper and textile, and 9.9wt%/min at 360°C for wood. At the end of the active pyrolysis stage, the final mass of paper, wood, textile and PET was 28.77%, 26.78%, 21.62% and 18.31%, respectively. During pyrolysis of individual MSW components at 500°C, the wood required the least amount of heat at 665.2J/g, compared to 2483.2J/g for textile, 2059.4J/g for paper and 2256.1J/g for PET plastic. The PET plastic had much higher activation energy of 181.86kJ/mol, compared to 41.47kJ/mol for wood, 50.01kJ/mol for paper and 36.65kJ/mol for textile during pyrolysis at a heating rate of 10°C/min. H2O and H2 peaks were observed on the MS curves for the pyrolysis of three biomass-derived materials but there was no obvious H2O and H2 peaks on the MS curves of PET plastic. There was a significant interaction between biomass and PET plastic during co-pyrolysis if the biomass fraction was dominant. The amount of heat required for the co-pyrolysis of the biomass and plastic mixture increased with the increase of plastic mass fraction in the mixture. Torrefaction at a proper temperature and time could improve the grindability of PET plastic. The increase of torrefaction temperature and time did not affect the temperature where the maximum pyrolytic rates occurred for both biomass and plastic but decreased the maximum pyrolysis rate of biomass and increased the maximum pyrolysis rate of PET plastic. The amount of heat for the pyrolysis of biomass and PET mixture co-torrefied at 280°C for 30min was 4365J/g at 500°C, compared to 1138J/g for the pyrolysis of raw 50% wood and 50% PET mixture at the same condition.

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Thermogravimetric analysis of the pyrolysis characteristics and kinetics of plastics and biomass blends

Cited by 180 publications

References 21 publications

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Comparative study on combustion and oxy-fuel combustion environments using mixtures of coal with sugarcane bagasse and biomass sorghum bagasse by the thermogravimetric analysis

Co-pyrogasification of Plastics and Biomass, a Review

Thermogravimetric and calorimetric characteristics during co-pyrolysis of municipal solid waste components

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