Catalytic pyrolysis of plastic waste for the production of liquid fuels for engines

Budsaereechai, Supattra; Hunt, Andrew J.; Ngernyen, Yuvarat

doi:10.1039/c8ra10058f

Cited by 180 publications

(85 citation statements)

References 31 publications

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“…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: Resultssupporting

confidence: 88%

“…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%

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

2020

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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.

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

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

2020

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“…[12] The complete weightloss (∼100 %) starts slowly near 415 ºC, reaches a maximum at ∼466 ºC, and finishes at ∼480 ºC. According to Supattra Budsaereechai et al, [13] the catalytic pyrolysis of PP to get liquid products normally takes place at the lower temperature as compared with the pyrolysis without the catalyst. Therefore, in this study, the temperature of the experimental bed reactor was maintained at 450 ºC during the pyrolysis process.…”

Section: Resultsmentioning

confidence: 99%

Effects of using ZSM‐5 and a rock‐reforming mineral as catalysts on liquid fraction collected from polypropylene pyrolysis

Linh

Tuấn

2020

Vietnam Journal of Chemistry

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In this study, a rock‐reforming mineral and zeolite ZSM‐5 were used as catalysts in the pyrolysis of polypropylene (PP) to get liquid products. The structures of catalysts were investigated via XRD and FTIR techniques. The liquid fractions collected from the non‐catalytic and catalytic pyrolysis processes were indicated via GCMS measurement. The results show the rock‐forming mineral has the typical pattern of SiO2 quartz, KAlSi3O8 microcline, and H2KAl3(SiO4)3 muscovite phases, while the zeolite ZSM‐5 has the typical pattern of H0.32Al0.32Si95.68O192 hydrogen aluminum silicate phase. The major products from PP pyrolysis without catalyst was 2,4‐ dimethyl‐1‐heptene (trimer), around 46.43 wt.% and the percentage of branched‐chain alkenes of 90.22 wt.% is significantly high. Whereas, the liquid products, which were formed from the catalytic pyrolysis using the rock‐reforming mineral and ZSM‐5 as catalysts, contain the significantly reduced portions of alkenes.

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“…The evolved gas mainly consisted of CO 2 , CO, CH 4 , and C 2 H 4 which suggests that the main reaction leading to the formation of gas is the de-alkylation of the styrene formed and de-alkylation of methyl-substituted bi-and tricyclic aromatic hydrocarbons. 62,63 The results from published studies on the pyrolysis (<700°C) of plastics were compared with our study (ESI Table 1 †). In our study, a significant reduction in reaction time (<10 min) and temperature (250°C) meant less energy consumption to valorize the plastic waste as compared with other studies.…”

Section: Comparison Of Conventional Heating (Tga-ftir) and Microwave Heating On Quality Of De-polymerization Productsmentioning

confidence: 99%

Phytocat – a bio-derived Ni catalyst for rapid de-polymerization of polystyrene using a synergistic approach

et al. 2021

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Catalytic pyrolysis of plastic waste for the production of liquid fuels for engines

Abstract: Catalytic pyrolysis of waste plastics using low cost binder-free pelletized bentonite clay has been investigated to yield pyrolysis oils as drop-in replacements for commercial liquid fuels such as diesel and gasohol 91.

Cited by 180 publications

References 31 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

Effects of using ZSM‐5 and a rock‐reforming mineral as catalysts on liquid fraction collected from polypropylene pyrolysis

Phytocat – a bio-derived Ni catalyst for rapid de-polymerization of polystyrene using a synergistic approach

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