Pyrolysis of mixed municipal solid waste: Characterisation, interaction effect and kinetic modelling using the thermogravimetric approach

Chhabra, Vibhuti; Bhattacharya, Sankar; Shastri, Yogendra

doi:10.1016/j.wasman.2019.03.048

Cited by 75 publications

(33 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meanwhile, the activation energies of the strong peaks (440–470 °C) were located in the range from 241 to 294 kJ mol −1 . These strong degradation peaks corresponded to the decomposition of other plastic films, including PVC, PS, PET, and their mixture [ 31 ]. These values are within the range of those reported in the literature on plastic and plastic mixture [ 31 , 32 , 33 , 52 , 53 ].…”

Section: Resultsmentioning

confidence: 99%

“…Although the kinetics of pyrolysis packaging plastics (PS/PP, PET/PP, PET/PE film and PP/PE film) was studied thoroughly using different kinetics models [ 31 , 32 , 33 ], only one study was focused on pyrolysis kinetics of MFPWs using model-free methods (as the simplified formal reaction model) [ 11 ], which resulted in big variation in the kinetic parameters at the lower conversion rate (up to 0.7) and unreasonable kinetic parameters at the higher conversion rate. Additionally, it was assumed that by using this model each peak in the DTG analysis curves corresponds to the individual and sequential decomposition of the pseudocomponents, giving the impression that no interactions occur between them [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of Metalized Food Packaging Plastics Pyrolysis Kinetics Using an Independent Parallel Reactions Kinetic Model

2020

View full text Add to dashboard Cite

Recently, a pyrolysis process has been adapted as an emerging technology to convert metalized food packaging plastics waste (MFPWs) into energy products with a high economic benefit. In order to upscale this technology, the knowledge of the pyrolysis kinetic of MFPWs is needed and studying these parameters using free methods is not sufficient to describe the last stages of pyrolysis. For a better understanding of MFPWs pyrolysis kinetics, independent parallel reactions (IPR) kinetic model and its modification model (MIPR) were used in the present research to describe the kinetic parameters of MFPWs pyrolysis at different heating rates (5–30 °C min−1). The IPR and MIPR models were built according to thermogravimetric (TG)-Fourier-transform infrared spectroscopy (FTIR)-gas chromatography−mass spectrometry (GC-MS) results of three different types of MFPWs (coffee, chips, and chocolate) and their mixture. The accuracy of the developed kinetic models was evaluated by comparing the conformity of the DTG experimental results to the data calculated using IPR and MIPR models. The results showed that the dependence of the pre-exponential factor on the heating rate (as in the case of MIPR model) led to better conformity results with high predictability of kinetic parameters with an average deviation of 2.35% (with an improvement of 73%, when compared to the IPR model). Additionally, the values of activation energy and pre-exponential factor were calculated using the MIPR model and estimated at 294 kJ mol−1 and 5.77 × 1017 kJ mol−1 (for the mixed MFPW sample), respectively. Finally, GC-MS results illustrated that pentane (13.8%) and 2,4-dimethyl-1-heptene isopropylcyclobutane (44.31%) represent the main compounds in the released volatile products at the maximum decomposition temperature.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling of Metalized Food Packaging Plastics Pyrolysis Kinetics Using an Independent Parallel Reactions Kinetic Model

2020

View full text Add to dashboard Cite

show abstract

“…The rubber radicals are hypothesized to catalyze the formation of radicals in plastic samples; this causes a positive synergistic effect in the system until the entire rubber sample is expected to pyrolyze completely [48]. The DTG curve of P50R50_Exp had three peaks, where the first peak and the third peak were mainly due to rubber pyrolysis, and the second peak was led by plastic pyrolysis.…”

Section: Co-pyrolysis Of the Main Polymeric Components Based On Tg Exmentioning

confidence: 99%

“…The main reason for large amount of char is that rubber contains more inorganic impurities and black carbon, where a high ash content leads to more solid products [35]. This char of rubber pyrolysis hinders the pyrolysis of the plastic, and the volatiles formed are suspected to deposit in the char, which causes a negative synergy in the system [48,49]. The experimental curves do not fit well with the calculated curves; thus, the co-pyrolysis of plastic and rubber cannot be simply analyzed via a parallel superposition model.…”

Section: Co-pyrolysis Of the Main Polymeric Components Based On Tg Exmentioning

confidence: 99%

“…The TG and DTG curves of plastic (P), rubber (R), and P50R50 are shown in Figure 3 . The beginning reaction temperature T d of the blend P50R50 was 5.26 °C lower than R and 63.48 °C lower than P. The rubber radicals are hypothesized to catalyze the formation of radicals in plastic samples; this causes a positive synergistic effect in the system until the entire rubber sample is expected to pyrolyze completely [ 48 ]. The DTG curve of P50R50_Exp had three peaks, where the first peak and the third peak were mainly due to rubber pyrolysis, and the second peak was led by plastic pyrolysis.…”

Section: Analysis Of the Influence On Pyrolysis Process Parametersmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Interactions among Polymeric Components of Automobile Shredder Residue on the Pyrolysis Temperature and Characterization of Pyrolytic Products

Yang

Chen

2020

Polymers

View full text Add to dashboard Cite

Pyrolysis and gasification have gradually become the main means to dispose of automobile shredder residue (ASR), since these methods can reduce the volume and quality of landfill with lower cost and energy recovery can be conducted simultaneously. As the ASR pyrolysis process is integrated, the results of pyrolysis reactions of organic components and the interaction among polymeric components can be clarified by co-pyrolysis thermogravimetric experiments. The results show that the decomposition mechanisms of textiles and foam are markedly changed by plastic in the co-pyrolysis process, but the effect is not large for rubber and leather. This effect is mainly reflected in the pyrolysis temperature and pyrolysis rate. The pyrolytic trend and conversion curve shape of the studied ASR can be predicted by the main polymeric components with a parallel superposition model. The pyrolytic product yields and characterizations of gaseous products were analyzed in laboratory-scale non-isothermal pyrolysis experiments at finished temperatures of 500 °C, 600 °C, and 700 °C. The results prove that the yields of pyrolytic gas products are determined by the thermal decomposition of organic substances in the ASR and final temperature.

show abstract

Thermo‐catalytic pyrolysis of wastes using bimetal‐modified ZSM ‐5 catalyst: investigation of the reaction kinetic parameters

et al. 2021

View full text Add to dashboard Cite

The decomposition of waste polymers and the main reaction kinetic parameters of the pyrolysis have been discussed based on thermogravimetric analysis (TGA) using Me/Ni/ZSM-5 catalysts (Me = Ca, Ce, La, Mg, Mn). Mainly, the effect of the raw materials (polyolefin, polyethylene terephthalate) and catalyst presence to the weight loss were investigated. The tested catalysts can effectively reduce the activation energies of the waste pyrolysis. However, different tendencies were found in case of different raw materials. Based on results, the La/Ni/ZSM-5 catalyst was further investigated using raw material: catalyst ratio of 2:1, 1:1, 1:2 and 1:3 by both TG instrument and tubular furnace reactor at 500 C and 900 C. Mainly, the gas composition and the syngas yield were investigated. The lowest activation energy and the highest yield of the syngas (92.3 mmol/g raw material using pyrolysis-reforming 900 C) were found in case of raw material:catalyst ratio of 2:1.

show abstract

Pyrolysis of mixed municipal solid waste: Characterisation, interaction effect and kinetic modelling using the thermogravimetric approach

Cited by 75 publications

References 23 publications

Modeling of Metalized Food Packaging Plastics Pyrolysis Kinetics Using an Independent Parallel Reactions Kinetic Model

Modeling of Metalized Food Packaging Plastics Pyrolysis Kinetics Using an Independent Parallel Reactions Kinetic Model

Influence of Interactions among Polymeric Components of Automobile Shredder Residue on the Pyrolysis Temperature and Characterization of Pyrolytic Products

Thermo‐catalytic pyrolysis of wastes using bimetal‐modified ZSM ‐5 catalyst: investigation of the reaction kinetic parameters

Contact Info

Product

Resources

About