Vacuum pyrolysis of commingled plastics containing PVC II. Product analysis

Miranda, Rosa; Pakdel, Hooshang; Roy, Christian; Vasile, Cornelia

doi:10.1016/s0141-3910(01)00066-0

Cited by 130 publications

(88 citation statements)

References 34 publications

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“…These elements subsequently appear in pyrolysis products causing problems for their utilisation in further applications. [8][9][10] Therefore, extensive studies are being carried out to improve the environmental and economic feasibility of feedstock recycling of waste plastics through pyrolysis/gasification.…”

Section: Introductionmentioning

confidence: 99%

Processing Real-World Waste Plastics by Pyrolysis-Reforming for Hydrogen and High-Value Carbon Nanotubes

Nahil

Miskolczi

et al. 2013

Environ. Sci. Technol.

193

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Producing both hydrogen and high-value carbon nanotubes (CNTs) derived from waste plastics is reported here using a pyrolysis-reforming technology comprising a two-stage reaction system, in the presence of steam and a Ni-Mn-Al catalyst. The waste plastics consisted of plastics from a motor oil container (MOC), waste commercial high density polyethylene (HDPE) and regranulated HDPE waste containing polyvinyl chloride (PVC). The results show that hydrogen can be produced from the pyrolysis-reforming process, but also carbon nanotubes are formed on the catalyst. However, the content of 0.3 wt.% polyvinyl chloride in the waste HDPE (HDPE/PVC) has been shown to poison the catalyst and significantly reduce the quantity and purity of CNTs. The presence of sulphur has shown less influence on the production of CNTs in terms of quantity and CNT morphologies. Around 94.4 mmol H 2 g -1 plastic was obtained for the pyrolysis-reforming of HDPE waste in the presence of the Ni-Mn-Al catalyst and steam at a reforming temperature of 800 °C. The addition of steam in the process results in an increase of hydrogen production and reduction of carbon yield; in addition, the defects of CNTs e.g. edge dislocations were found to be increased with the introduction of steam (from Raman analysis).

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Section: Introductionmentioning

confidence: 99%

Processing Real-World Waste Plastics by Pyrolysis-Reforming for Hydrogen and High-Value Carbon Nanotubes

Nahil

Miskolczi

et al. 2013

Environ. Sci. Technol.

193

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“…A mong the various recycling methods for the waste plastics, the feedstock recycling has been found to be a promising technique. There are a lot of research [4][5][6][7][8][9][10][11][12][13][14][15] in progress on the pyrolysis and utilization of pyrolysis products for various applications.…”

Section: Introductionmentioning

confidence: 99%

Low Density Polyethylene (LDPE) Waste Plastic Transformation into Renewable Heavy Fuel Using Thermal Cracking

Sarker¹,

Rashid²,

Rahman³

2012

ENV

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Lo w density polyethylene (LDPE) waste plastic was transformed into heavy fuel by using fractional distillation column p rocess with liquefaction process. For experimental purpose two types of temperature profiles were used one for LDPE waste plastic liquefaction temperature and another one for fractional distillat ion column temperature. In this experiment liquefaction temperature ranges 100-420 ℃ and fract ional distillation temperature ranges 340-365 ℃. LDPE waste plastic to heavy fuel production was performed without adding any kind of catalyst in presence of oxygen and without vacuum system. Different types of analytical equip ment were used for produced fuel analysis purposed such as GC/MS, FT-IR and DSC. By using GC/MS analysis result indicates that LDPE waste plastic to produced heavy fuel hydrocarbon chain range C 5 to C 28 and light gas are also present and hydrocarbon range is C 1 -C 4 . FT-IR (Spectrum 100) analysis results indicate that produced fuel functional group has bands energy which is reflecting with calorific value. By using DSC analysis result showed produced fuel delta H value or enthalpy value. Produce fuel can be use for heavy equipment internal combustion engine or electricity generation or feed fo r feed stock refinery process.

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“…Pyrolysis is an established process that can potentially be used to convert plastics to more valuable chemicals and fuels [3][4][5][6]. Pyrolysis is the thermal degradation of the plastic polymer to produce a char, oil and gas, all of which have potential as useful end products.…”

Section: Introductionmentioning

confidence: 99%

“…Pyrolysis is the thermal degradation of the plastic polymer to produce a char, oil and gas, all of which have potential as useful end products. There have been many studies on the pyrolysis of pure plastic materials [7,8] and mixtures of pure plastic which simulate those representative of real world samples such as municipal solid waste plastics [4,[9][10][11]. However, there are few studies detailing the product characteristics from the pyrolysis process of real world waste plastics [12,13].…”

Section: Introductionmentioning

confidence: 99%

Analysis of products from the pyrolysis of plastics recovered from the commercial scale recycling of waste electrical and electronic equipment

Hall

Williams

2007

Journal of Analytical and Applied Pyrolysis

104

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Three plastic fractions from a commercial waste electrical and electronic equipment (WEEE) processing plant were collected and investigated for the possibility of recycling them by batch pyrolysis. The first plastic was from equipment containing cathode ray tubes (CRTs), the second plastic was from refrigeration equipment, and the third plastic was from mixed WEEE. Initially, the decomposition of each of the plastics was investigated using a TGA linked to a FT-ir spectrometer which showed that the CRT plastic decomposed to form aliphatic and aromatic compounds, the refrigerator plastic decomposed to form aldehydes, CO 2 , aromatic, and aliphatic compounds, and the mixed WEEE plastic decomposed to form aromatic and aliphatic compounds, CO 2 , and CO. Each plastic mixture was also pyrolysed in a batch reactor to determine the halogen and metal content of the pyrolysis products, additionally, characterisation of the pyrolysis oils was carried out by GC-MS and the pyrolysis gases by GC-FID and GC-TCD. It was found that the halogen content of the oils was relatively low but the halogen and metal content of the chars was high. The pyrolysis oils were found to contain valuable chemical products and the pyrolysis gases were mainly halogen free, making them suitable as a fuel.

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Vacuum pyrolysis of commingled plastics containing PVC II. Product analysis

Cited by 130 publications

References 34 publications

Processing Real-World Waste Plastics by Pyrolysis-Reforming for Hydrogen and High-Value Carbon Nanotubes

Processing Real-World Waste Plastics by Pyrolysis-Reforming for Hydrogen and High-Value Carbon Nanotubes

Low Density Polyethylene (LDPE) Waste Plastic Transformation into Renewable Heavy Fuel Using Thermal Cracking

Analysis of products from the pyrolysis of plastics recovered from the commercial scale recycling of waste electrical and electronic equipment

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