Kinetic study of municipal plastic waste

Silvarrey, Laura Salvia Diaz; Phan, Anh N.

doi:10.1016/j.ijhydene.2016.05.202

Cited by 150 publications

(96 citation statements)

References 34 publications

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“…Municipal plastic waste consisting of HDPE, LDPE, PP, PS and PET was pyrolysed to study the kinetics and develop a kinetic model by using TG analysis and Mat lab. The results suggested that the mechanism except first order observed during degradation due to difference in kinetic model with heating rate and activation energy with conversion …”

Section: Introductionmentioning

confidence: 54%

“…The results suggested that the mechanism except first order observed during degradation due to difference in kinetic model with heating rate and activation energy with conversion. [11] Thermal degradation kinetics of different types of plastic samples are carried out in both isothermal and dynamic mode using TGA at different heating rate in inert atmosphere and the kinetic parameters are calculated by a first order kinetic model. The values of activation energy in isothermic and dynamic regimen are 236, and 168 to 286 kJ/mol.…”

Section: Introductionmentioning

confidence: 99%

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Kinetics of Thermal Degradation of Non‐Woven Plastics: Model‐Free Kinetic Approach

Patnaik

Panda

2019

ChemistrySelect

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The thermo‐degradative behaviour of non‐woven plastics was studied in order to analyze their thermal stability and subsequent recycling method. Non‐isothermal thermogravimetric experiments using wide range of heating rates of 10, 20, 40, 60, 80,100 °Cmin−1 have been performed from ambient to 900 °C in a thermo‐balance with the objective of determining the kinetic parameters. Four model free kinetic approaches such as Friedman method, Coats‐Redfern (modified) method, Flynn–Wall–Ozawa (FWO) method and Kissinger method have been used to determine kinetic parameters for the two stage degradation of the non‐woven plastic sample including the thermal degradation of synthetic plastics in the first step followed by the subsequent degradation of inorganic fillers in the second step. The activation energy obtained for first stage degradation is found significantly lower (106‐112 kJ/mol) compared to the second stage degradation (191‐202 kJ/mol). This result would help design a process for the valorisation of synthetic polymer and segregation of the filler materials in the plastic sample to be reused further.

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Section: Introductionmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Kinetics of Thermal Degradation of Non‐Woven Plastics: Model‐Free Kinetic Approach

Patnaik

Panda

2019

ChemistrySelect

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“…Diaz Silvarrey and Phan [2] 267.61 ± 3.23 Lyon [8] 130-200 Saha and Ghoshal [9] 190 Aboulkas et al [10] 215 Aboulkas et al [11] 215-221 Aguado et al [12] 261 ± 21 Sorum et al [13] 340 Wu et al [14] 194-206…”

Section: Referencementioning

confidence: 99%

“…Miskolczi et al [1] mentioned that 65%-70% of plastic wastes in the world are disposed in landfills, and the remaining 30%-35% are incinerated. Both landfills and incineration are expensive and unfavorable for different reasons, including, but are not limited to, environmental concerns [2]. Therefore, recycling, which is the economic reuse of material and energy from wastes, is a favorable alterative.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis of Low Density Polyethylene: Kinetic Study Using TGA Data and ANN Prediction

Dubdub

Al-Yaari

2020

Polymers

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Pyrolysis of waste low-density polyethylene (LDPE) is considered to be a highly efficient, promising treatment method. This work aims to investigate the kinetics of LDPE pyrolysis using three model-free methods (Friedman, Flynn-Wall-Qzawa (FWO), and Kissinger-Akahira-Sunose (KAS)), two model-fitting methods (Arrhenius and Coats-Redfern), as well as to develop, for the first time, a highly efficient artificial neural network (ANN) model to predict the kinetic parameters of LDPE pyrolysis. Thermogravimetric (TG) and derivative thermogravimetric (DTG) thermograms at 5, 10, 20 and 40 K min−1 showed only a single pyrolysis zone, implying a single reaction. The values of the kinetic parameters (E and A) of LDPE pyrolysis have been calculated at different conversions by three model-free methods and the average values of the obtained activation energies are in good agreement and ranging between 193 and 195 kJ mol−1. In addition, these kinetic parameters at different heating rates have been calculated using Arrhenius and Coats-Redfern methods. Moreover, a feed-forward ANN with backpropagation model, with 10 neurons in two hidden layers and logsig-logsig transfer functions, has been employed to predict the thermogravimetric analysis (TGA) kinetic data. Results showed good agreement between the ANN-predicted and experimental data (R > 0.9999). Then, the selected network topology was tested for extra new input data with a highly efficient performance.

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“…Many extensive studies on thermal degradation kinetics of single plastics have been carried out [12][13][14][15][16][17][18], and most of them have been developed on the assumption that the reaction can be described by a first or an nth order reaction model. This assumption can result in the Arrhenius parameters deviating from the real ones [19][20][21]. In any case, many discrepancies can be found in literature data between the same polymers (usually virgin/commercial polymers) that arise scattered and inconsistent because of the different samples (different manufacturing processes and eventual presence of additives) and different experimental conditions and methodology used [22].…”

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confidence: 99%

Thermal behavior and pyrolytic degradation kinetics of polymeric mixtures from waste packaging plastics

Tuffi¹,

D'Abramo²,

Cafiero³

et al. 2018

Express Polym. Lett.

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Kinetic study of municipal plastic waste

Abstract: This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International licence Newcastle University ePrints -eprint.ncl.ac.uk Diaz-Silvarrey LS, Phan AN. Kinetic studies of municipal plastic waste.

Cited by 150 publications

References 34 publications

Kinetics of Thermal Degradation of Non‐Woven Plastics: Model‐Free Kinetic Approach

Kinetics of Thermal Degradation of Non‐Woven Plastics: Model‐Free Kinetic Approach

Pyrolysis of Low Density Polyethylene: Kinetic Study Using TGA Data and ANN Prediction

Thermal behavior and pyrolytic degradation kinetics of polymeric mixtures from waste packaging plastics

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