Wax co-cracking synergism of high density polyethylene to alternative fuels

Motawie, M. A; Hanafi, Samia A.; Elmelawy, Mamdouh S.; Ahmed, Sahar M.; Mansour, Nahla A.; Darwish, Mohamed S. A.; Abulyazied, Dalia E.

doi:10.1016/j.ejpe.2015.07.004

Cited by 21 publications

(19 citation statements)

References 18 publications

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“…Furthermore, the naphthenic percentage is also increased in the order of PE>Wax 2>Wax 1, indicating the cyclic carbon chain formation tendency is higher with increase in carbon chain length (Figure a). The mechanism for the formation of naphthenic compounds follows either recombination of bi‐radical intermediate or intramolecular cyclization involving an alkene‐radical containing intermediate . The cyclization can occur from 1–5, 1–6 and 1–7 position through transit state of five, six or seven membered ring containing naphthenes.…”

Section: Resultsmentioning

confidence: 99%

A Rapid Py‐GC/MS Study for Linear Alpha Olefin Production from Fast Pyrolysis of Wax and Waste Polyethylene

Ramachandrarao¹,

Naresh²,

Panday

et al. 2019

ChemistrySelect

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The feed and temperature dependent Linear Alpha olefins (LAOs) product distribution in fast pyrolysis of wax and polyethylene plastic waste was investigated by using pyrolysis‐GC‐MS (Py‐GC‐MS) technique. The optimal pyrolysis temperature to obtain the C6 to C14 LAOs was found to be largely dependent on feed carbon length. The shorter the feed, higher the temperature required and vice versa. The wax with carbon numbers C35 to C60 is an ideal feed stock for LAO production with minimal side products

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Section: Resultsmentioning

confidence: 99%

A Rapid Py‐GC/MS Study for Linear Alpha Olefin Production from Fast Pyrolysis of Wax and Waste Polyethylene

Ramachandrarao¹,

Naresh²,

Panday

et al. 2019

ChemistrySelect

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“…Similarly, a research team led by Motawie reported the pyrolysis of HDPE at 450 °C in 0.5-3 h time intervals. [86] Only 52.2 wt % oil and 41.2 wt % of gas yields were obtained at 3 h reaction time. Conducting the pyrolysis reaction for about 0.5 h, the oil yield was found at a higher 72 wt %, while the gas yield amounted to only 12 wt %.…”

Section: Retention Time and Feedstock Compositionmentioning

confidence: 97%

“…However, more chars are produced at 60 min reaction which indicated that 60 min reaction time is not enough for the PS to yield the maximum amount of oil. Similarly, a research team led by Motawie reported the pyrolysis of HDPE at 450 °C in 0.5–3 h time intervals [86] . Only 52.2 wt % oil and 41.2 wt % of gas yields were obtained at 3 h reaction time.…”

Section: Pyrolysis Of Waste Plasticsmentioning

confidence: 98%

Recent Trends in the Pyrolysis of Non‐Degradable Waste Plastics

2021

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Waste plastics are non‐degradable constituents that can stay in the environment for centuries. Their large land space consumption is unsafe to humans and animals. Concomitantly, the continuous engineering of plastics, which causes depletion of petroleum, poses another problem since they are petroleum‐based materials. Therefore, energy recovering trough pyrolysis is an innovative and sustainable solution since it can be practiced without liberating toxic gases into the atmosphere. The most commonly used plastics, such as HDPE, LDPE (high‐ and low‐density polyethylene), PP (polypropylene), PS (polystyrene), and, to some extent, PC (polycarbonate), PVC (polyvinyl chloride), and PET (polyethylene terephthalate), are used for fuel oil recovery through this process. The oils which are generated from the wastes showed caloric values almost comparable with conventional fuels. The main aim of the present review is to highlight and summarize the trends of thermal and catalytic pyrolysis of waste plastic into valuable fuel products through manipulating the operational parameters that influence the quality or quantity of the recovered results. The properties and product distribution of the pyrolytic fuels and the depolymerization reaction mechanisms of each plastic and their byproduct composition are also discussed.

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“…The cloud and pour points however fall within the range for the commercial-grade diesel as shown in Table 4 above. A higher pour point (-12°C) than that of diesel (-40 to -33°C) is possibly indicative of a larger amount of paraffin in the feed (Motawie et al, 2015) which contains about 37.5% HDPE. In general, the ash content was extremely low which was described by Santaweesuk and Janyalertadun (2017) as evidence of the fluid's lack of metal pollution and high-molecular weight soot.…”

Section: Flash Cloud and Pour Pointmentioning

confidence: 99%

Design, Fabrication and Operational Evaluation of a Co-Pyrolysis System for Waste-Plastics Derived Fuels: A Study of Edo North

Otoikhian¹,

Amune²,

Edogamhe³

et al. 2022

American Journal of Engineering and Applied Sciences

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This research work designed, developed and assessed the performance of a co-pyrolysis system generating waste-plastic extract fuels from mixed Municipal Waste Plastics (MWP) while evaluating High-Density Polyethylene (HDPE), Polypropylene (PP) and Polystyrene (PS) as the main municipal waste plastic sources. The materials selected for the reactor were carefully studied to meet the pyrolysis system's strength, operability and safety requirements. The equipment was put through its paces in three trials, using 2kg of mixed municipal waste plastics each. The temperature was optimally constant at 450°C for three hours. The equipment had a functional conversion efficiency (wt %) of 73.17%, a waste reduction efficiency (wt %) of 86.3% and oil recovery of 0.90L oil/kg MWP, according to the test results. As a result of its re-cracking process, which recycles heavy molecular weight compounds back into the reactor, this reactor was built in such a manner that only compounds in the carbon range of C1 20 may be created. This process was discovered to have a major impact on the product's distribution. Plastic fuels generated from co-mingled municipal waste plastics had similar characteristics with diesel and based on the characterization and comparative research done in this study.

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Wax co-cracking synergism of high density polyethylene to alternative fuels

Cited by 21 publications

References 18 publications

A Rapid Py‐GC/MS Study for Linear Alpha Olefin Production from Fast Pyrolysis of Wax and Waste Polyethylene

A Rapid Py‐GC/MS Study for Linear Alpha Olefin Production from Fast Pyrolysis of Wax and Waste Polyethylene

Recent Trends in the Pyrolysis of Non‐Degradable Waste Plastics

Design, Fabrication and Operational Evaluation of a Co-Pyrolysis System for Waste-Plastics Derived Fuels: A Study of Edo North

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