New energy value chain through pyrolysis of hospital plastic waste

Paraschiv, Maria; Kuncser, Radu; Tazerout, Mohand; Prisecaru, Tudor

doi:10.1016/j.applthermaleng.2015.04.070

Cited by 47 publications

(14 citation statements)

References 29 publications

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“…The liquid was collected in a glass vessel (6) immersed in an ice bucket (7) while incondensable products passed into a glass collector system to ensure optimal sampling, and then discharged. The bench installation has been already successfully used by the team for thermal and catalytic cracking of biomass tar, plastic wastes, and industrial fatty residues [23][24][25].…”

Section: Bench-scale Installationmentioning

confidence: 99%

Catalysts' influence on thermochemical decomposition of waste tires

Kordoghli

Paraschiv

Kuncser

et al. 2017

Env Prog and Sustain Energy

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In this article, correlation between the influence of catalysts on waste tires pyrolysis at small-and laboratory-scale installation are highlighted. Kinetic and thermodynamic parameters of tires rubber thermochemical transformations were evaluated using thermogravimetric analyses (TGA). For that purpose, Zeolite (ZSM-5), alumina (Al 2 O 3 ), calcium carbonate (CaCO 3 ), and magnesium oxide (MgO) were used as catalyst. It was found that all catalysts induce a delayed onset of pyrolytic process and MgO and CaCO 3 significantly reduced the activation energy (E a ) from 246.89 kJÁmole 21 (thermal pyrolysis) to 121.82 and 128.34 kJÁ mole 21 , respectively. At laboratory scale, a fixed-bed reactor was used to distinguish how the contact manner between tires and catalysts influences the yield of pyrolysis products as well as the gas quality. It was proved that CaCO 3 and Al 2 O 3 are the most suitable catalysts for increasing the gas fraction, while the MgO promotes the formation of liquid fraction.

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Section: Bench-scale Installationmentioning

confidence: 99%

Catalysts' influence on thermochemical decomposition of waste tires

Kordoghli

Paraschiv

Kuncser

et al. 2017

Env Prog and Sustain Energy

Self Cite

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“…A 63 similar effect was observed working at high heating rates. 64 Paraschiv et al(2015) studied the pyrolysis of five common polymers present in hospital plastic 65 waste in three different fixed bed reactor scales in order to maximize the production of the 66 condensable fraction and optimize its energetic properties. The authors began with the 67 thermogravimetric analysis (TGA) of each polymer and the data obtained in this study were 68 employed to adapt the cooler system of the laboratory reactor to achieve the complete 69 condensation of pyrolysis vapors.…”

Section: Non-viscoelastic Polyurethane Foam 56mentioning

confidence: 99%

Pollutant emissions from the pyrolysis and combustion of viscoelastic memory foam

Garrido

Font

Conesa

2017

Science of The Total Environment

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9Thermal degradation of viscoelastic memory foam (VMF) in a horizontal laboratory scale 10 reactor has been studied. Pyrolysis and combustion experiments under sub-stoichiometric 11 conditions were performed at four different temperatures (550ºC, 650ºC, 750ºC and 850ºC) for 12 the determination of pollutants. Analyses of gas and semivolatile compounds, including 13 polychlorodibenzo-p-dioxins and furans (PCDD/Fs) and dioxin-like polychlorobiphenyls (dl-14 PCBs) are shown. From the results, it was deduced that pyrolytic conditions favour the formation 15 of PAHs, methane, ethylene, NH 3 and dl-PCBs, whereas the presence of oxygen involves a higher 16 emission of PCDD/Fs and simple N-containing compounds such as NO and HCN. The toxic 17 levels calculated for PAHs, PCDD/Fs and dl-PCBs in all cases were low confirming that the 18 incineration of VMF mattress waste could be a good option for waste management. Nevertheless, 19

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“…The Ti values of the PP and PE coastal debris showed lower initial pyrolysis temperatures than in other studies [30][31][32][33]. The initiation of thermal decomposition for PP occurred at a lower temperature than for PE because the polymer chain of the PP coastal debris sample consists of a tertiary carbon, which corresponds to branching [13,29]. Furthermore, Tm increased from 434.98 °C to 464.98 °C for the nylon, from 474.97 °C to 499.96 °C for the PE, from 455.02 °C to 475.97 °C for the PP, and from 360.00 °C to 374.90 °C for the wood (bamboo) coastal debris sample.…”

Section: Effect Of the Heating Rate On The Pyrolysis Process Of Coastmentioning

confidence: 68%

“…Accordingly, to reduce the resistance, samples with a small particle size were selected for all the experiments. The effluences of the heating rate were a significant factor in the pyrolysis due to the variations of the heat and mass transfer inside or among the sample particles [27,29]. Table 2.…”

Section: Effect Of the Heating Rate On The Pyrolysis Process Of Coastmentioning

confidence: 99%

A Kinetic Study on Combustible Coastal Debris Pyrolysis via Thermogravimetric Analysis

et al. 2019

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Coastal debris has recently emerged as a serious environmental pollution problem. Coastal debris can be treated using pyrolysis because it consists mainly of combustible materials like plastics (e.g., polyethylene (PE), polypropylene (PP), nylon) and wood. In this study, the pyrolysis characteristics of coastal debris were fully utilized by applying their basic data to fuel production. The initial temperature increased from 330 °C to 380 °C for the nylon fishing net coastal debris sample, from 405.01 °C to 430.08 °C for the PE fishing net coastal debris sample, from 395.01 °C to 419.96 °C for the PP rope coastal debris sample, and from 114.95 °C to 115.02 °C for the wood (bamboo) coastal debris sample. The activation rate of the global activation energy and the pre-exponential factors rose with the increasing heating rate, complementing the reduction rate constant due to the larger growth of the exponential term due to the kinetic models used.

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New energy value chain through pyrolysis of hospital plastic waste

Cited by 47 publications

References 29 publications

Catalysts' influence on thermochemical decomposition of waste tires

Catalysts' influence on thermochemical decomposition of waste tires

Pollutant emissions from the pyrolysis and combustion of viscoelastic memory foam

A Kinetic Study on Combustible Coastal Debris Pyrolysis via Thermogravimetric Analysis

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