Thermal and catalytic decomposition of mixed plastics

Vasile, Cornelia; Pakdel, Hooshang; Brebu, Mihai; Onu, P.; Darie, Hristea; Ciocâlteu, Stefan

doi:10.1016/s0165-2370(00)00151-0

Cited by 106 publications

(60 citation statements)

References 17 publications

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“…Similar results have been obtained by other authors before [43,44]. In all cases, most of pyrolysis liquids compounds are in the C7-C10 range, with a sharp peak in C8 fraction; this is a rather convenient result from the point of view of potential applications of these liquids, since C5-C10 is the gasoline carbon number range.…”

Section: Methodssupporting

confidence: 89%

Catalytic pyrolysis of plastic wastes with two different types of catalysts: ZSM-5 zeolite and Red Mud

López

Marco

Caballero

et al. 2011

Applied Catalysis B: Environmental

399

162

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Section: Methodssupporting

confidence: 89%

Catalytic pyrolysis of plastic wastes with two different types of catalysts: ZSM-5 zeolite and Red Mud

López

Marco

Caballero

et al. 2011

Applied Catalysis B: Environmental

399

162

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“…The pyrolysis equipment has been described previously. [17][18][19] The volatile decomposition products were passed by a cooling/collection system and separated into liquids (light fraction), tars (heavy fraction), and gases.…”

Section: Pyrolysis Proceduresmentioning

confidence: 99%

Feedstock recycling from plastic and thermoset fractions of used computers (I): pyrolysis

Vasile

Brebu

Karayıldırım

et al. 2006

J Mater Cycles Waste Manag

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The increasing production of computers, the progress in their performance, and the shorter time between innovation and production has led to increasing numbers of obsolete products. It has thus become necessary to recover some materials from old computers and to protect the environment from a new type of pollution. Such recycling is difficult because of the diversity of polymeric materials used, e.g., thermoplastics (polystyrene or acrylonitrile-butadienestyrene) and thermosets (epoxy resins), and the relatively high levels of flame retardants (halogen-and nitrogencontaining compounds) added during production. Pyrolysis seems to be a suitable way to recover materials and energy from such waste without component separation if an efficient method for reducing toxic compounds can be applied. In this study, the pyrolysis of plastic and thermoset fractions (keyboards, casings, printed circuit boards, and mixtures thereof) of used computers was studied by thermogravimetry and batch reactor pyrolysis. The degradation products were separated into three fractions, solid, liquid, and gaseous, each of them being characterized by suitable methods such as gas chromatography (GC-MSD, gas chromatography-mass spectrometry detection; GC-AED, gas chromatography-atomic emission detection), infrared (FT-IR) and 1H-NMR (nuclear magnetic resonanace) spectroscopy, and elemental analysis. It has been established that most of the halogens, nitrogen, and sulfur is concentrated in the residue. However, the elimination of hazardous toxic compounds, mainly those containing bromine, is necessary before being able to safely use the pyrolysis oils as fuels or in refinery or petrochemical industry flows.

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“…Compared with the uncatalyzed reaction, the reaction proceeded much faster. Vasile et al [36] investigated the effect of H-ZSM5 and the orthophosphoric acid modified catalyst P-ZSM5 on the degradation of a polyolefin-rich mixed plastic fraction in a two-step process. Plastic degradation took place between 450 and 460°C with the employment of an extruder.…”

Section: Catalytic Processesmentioning

confidence: 99%

Feedstock recycling of waste polymeric material

Grause

Buekens

Sakata

et al. 2011

J Mater Cycles Waste Manag

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The first International Symposium on Feedstock Recycling of Polymeric Materials (ISFR) was hosted in 1999 in Sendai, Japan. Since then, the ISFR has been held five times in different places in Asia and Europe. Each of these conferences focused on special issues covered by the Journal of Material Cycles and Waste Management. The topics included thermal processes with and without catalysts, wet processes in various solvents, the dehydrochlorination of PVC, mechanical recycling and separation techniques, as well as the treatment of biomaterials. This review is a compilation of the most interesting and important developments discussed at the ISFR during the last decade.

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Thermal and catalytic decomposition of mixed plastics

Cited by 106 publications

References 17 publications

Catalytic pyrolysis of plastic wastes with two different types of catalysts: ZSM-5 zeolite and Red Mud

Catalytic pyrolysis of plastic wastes with two different types of catalysts: ZSM-5 zeolite and Red Mud

Feedstock recycling from plastic and thermoset fractions of used computers (I): pyrolysis

Feedstock recycling of waste polymeric material

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