A novel approach of solid waste management via aromatization using multiphase catalytic pyrolysis of waste polyethylene

Gaurh, Pramendra; Pramanik, Hiralal

doi:10.1016/j.wasman.2017.10.053

Cited by 76 publications

(49 citation statements)

References 39 publications

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“…The thermal decomposition method is generally used in the recycling of waste plastics into products with potential application areas as a result of pyrolysis under different operating conditions (Gaurh and Pramanik 2018). Several researchers published articles regarding the pyrolysis process of polyethylene for liquid production.…”

Section: Introductionmentioning

confidence: 99%

Utilization of liquid product through pyrolysis of LDPE and C/LDPE as commercial wax

Akgün

Yapıcı

Günkaya

et al. 2021

Environ Sci Pollut Res

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BackgroundIn this study, pyrolysis of low-density polyethylene (LDPE) and LDPE with aluminum (C/LDPE) wastes was carried out with different heating rates (5-10-20°C/min) at different temperatures (400-600-800°C). The effect of temperature and heating rate on liquid product yield was investigated. Product yields of LDPE and C/LDPE wastes were compared, and optimum liquid products were analyzed to utilize as commercial waxes for future use. MethodsTo determine the parameters of pyrolysis wastes was investigated with proximate, elemental analysis, and TGA. The as-produced liquid from pyrolysis of wastes was characterized by different characteristic tools, such as elemental analyses, GC-MS analyzes, 1 H-NMR tests, FT-IR spectra, the density, melting point, and carbon residue to compare commercial waxes. The characterization process was continued for the parameters with the optimum liquid products. ResultsAs a result of pyrolysis, the highest liquid product yield was achieved at 800°C with 5°C/min heating rate (85.87 %), and at 600°C with 5°C/min heating rate (71.3 %) for LDPE and C/LDPE, respectively. The results indicated that the derived liquid products are similar to commercial heavy wax.

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Section: Introductionmentioning

confidence: 99%

Utilization of liquid product through pyrolysis of LDPE and C/LDPE as commercial wax

Akgün

Yapıcı

Günkaya

et al. 2021

Environ Sci Pollut Res

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“…The maximum yield of the gas produced during catalytic pyrolysis was 11.4%, obtained from the 5% NiO/ZrO 2 catalyst. The increase in gas yield can be attributed to the interaction of the catalyst with the cracked hydrocarbons within the reaction mixture 29 . In terms of solid residue produced, the amount of solid residue reduced by increasing the NiO loading on the catalyst.…”

Section: Resultsmentioning

confidence: 99%

Diesel and gasoline like fuel production with minimum styrene content from catalytic pyrolysis of polystyrene

Ishaq

Rehman

Ahmad

et al. 2020

Env Prog and Sustain Energy

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Pyrolysis of waste polystyrene to generate fuel was carried out to yield pyrolysis oil. For the first time, NiO deposited over ZrO2 carrier as catalyst, was deployed and evaluated in the catalytic pyrolysis. Catalysts based on different loading (2, 5, 10, and 15%) of NiO deposited over ZrO2 carrier were prepared by solution combustion synthesis and tested toward screening of catalytic pyrolysis of PS in semi batch reactor. Based on conversion, yield of oil and low styrene monomer content, the catalytic performance with different loadings was evaluated and optimized. Furthermore, the oil obtained from the best catalysts were analyzed using GC–MS for carbon number distribution, depolymerization reactions, and diesel fuel generation. These catalysts were also characterized using X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), pyridine FTIR, and scanning electron microscopy (SEM) techniques. As compared to thermal pyrolysis, the catalytic pyrolysis process was found to be highly selective toward diesel like fuel generation with minimum styrene monomer formation. Also, 2 and 10% NiO catalyst showed the best catalytic performance in pyrolysis process that could be ascribed to the presence of Lewis and Brönsted acid sites resulting in selectivity for C16 carbon number, diesel fuel generation, and depolymerization reactions.

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“…[95,99,147] ZSM-5 catalysts have been shown to have increased aromatization activity for PP, PE, HDPE, LDPE, PC, and PS plastic waste as well. [171,172] The catalysts yield improved concentrations of monocyclic aromatic hydrocarbons (MAHs) as compared to larger pore zeolites due to the shape selectivity. In particular, the kinetic diameter of MAHs (benzene, toluene, p-xylene ca 5.85 Å) is near that of the pore size of HZSM-5 (ca 5.6 Å).…”

Section: Zsm-5mentioning

confidence: 99%

“…This was attributed to the high concentration of strong acid sites within the catalyst aiding in the aromatization of intermediates [95,99,147] . ZSM‐5 catalysts have been shown to have increased aromatization activity for PP, PE, HDPE, LDPE, PC, and PS plastic waste as well [171,172] . The catalysts yield improved concentrations of monocyclic aromatic hydrocarbons (MAHs) as compared to larger pore zeolites due to the shape selectivity.…”

Section: Heterogeneous Catalystsmentioning

confidence: 99%

The Use of Heterogeneous Catalysis in the Chemical Valorization of Plastic Waste

2020

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, respectively. Her graduate research focused on the fundamental understanding of deoxygenation mechanisms for biomass probe molecules on single crystals and thin films. During her graduate career, she received the DOE Science Graduate Student Research (SCGSR) award (2019) and conducted surface science research at Brookhaven National Lab. She now is a postdoctoral researcher at the University of Wisconsin-Madison. Her research focuses on surface spectroscopy and controlled design of heterogeneous catalysts. Melissa C. Cendejas received her B.A. (2016) in Chemistry and English from Williams College. There, she worked on the synthesis of conjugated organic molecules and phosphorusbased surfactants. She then started her PhD in Chemistry at the University of Wisconsin-Madison under the supervision of Prof. Ive Hermans. She studies active site formation on boron-based catalysts. She received the DOE Office of Science Graduate Student Research (SCGSR) award (2020) to perfrom in situ x-ray spectroscopy of catalysts at Stanford Synchrotron Radiation Lightsourse. Prof. Dr. Ive Hermans obtained his Ph.D. from KU Leuven University in Belgium in 2006. In addition to his scientific education, he also holds a postgraduate degree in Business Administration (KU Leuven, 2006). After postdoctoral research on in situ spectroscopy and reaction engineering with Prof. Alfons Baiker, he became assistant professor for heterogeneous catalysis (spring 2008) at ETH Zurich in Switzerland. January 2014, Prof. Hermans moved to the University of Wisconsin-Madison, holding a dual appointment in the Department of Chemistry and the Department of Chemical and Biological Engineering. His group focuses on the mechanistic understanding of catalytic technology using a variety of techniques.

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A novel approach of solid waste management via aromatization using multiphase catalytic pyrolysis of waste polyethylene

Cited by 76 publications

References 39 publications

Utilization of liquid product through pyrolysis of LDPE and C/LDPE as commercial wax

Utilization of liquid product through pyrolysis of LDPE and C/LDPE as commercial wax

Diesel and gasoline like fuel production with minimum styrene content from catalytic pyrolysis of polystyrene

The Use of Heterogeneous Catalysis in the Chemical Valorization of Plastic Waste

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