Feedstock recycling from plastics and thermosets fractions of used computers. II. Pyrolysis oil upgrading

Vasile, Cornelia; Brebu, Mihai; Karayıldırım, Tamer; Yanık, Jale; Darie, Hristea

doi:10.1016/j.fuel.2006.08.010

Cited by 68 publications

(29 citation statements)

References 13 publications

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“…For example, it was reported that polybrominated compounds mixed with polypropylene, polyethylene, polystyrene, and polyvinyl chloride can be thermally decomposed using a carbon composite of calcium carbonate (calcium-C) [23]. It was also reported that the quality of the pyrolysis oil was improved using commercial hydrogenation catalyst DHC-8 [24].…”

Section: Intoroductionmentioning

confidence: 99%

Reduction in Content of Bromine Compounds in the Product Oil of Pyrolysis Using Synthetic Hydrotalcite

Morita¹,

Wajima²,

Nakagome³

2015

IJCEA

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Abstract-Polystyrene plastic samples containing brominated flame-retardants (BR-PS) were pyrolyzed at 400 C using hydrotalcite to reduce the content of bromine compounds in the oil produced, in comparison with using sand, zeolite-4A, and zeolite-13X. The bromine plastic sample was prepared by mixing tetrabromobisphenol A and polystyrene, and added to a glass reactor, together with hydrotalcite, sand, zeolite-4A, or zeolite-13X. The product oil obtained by pyrolysis at 400 C from the BR-PS was mainly composed of aromatic compounds, such as benzene, heptane, and toluene, and two bromine compounds, 2-methyl-2-bromopentane and 3-bromopropane. The product oil obtained using hydrotalcite contained aromatic compounds with low molecular weight, and bromine compounds were not detected. In comparison with the use of sea sand and molecular sieves, the amount of bromine compounds in residue decreased in the order of hydrotalcite > molecular sieves 13X > molecular sieves 4A > sand. Hydrotalcite thus trapped bromine in residue during the pyrolysis of BR-PS.

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Section: Intoroductionmentioning

confidence: 99%

Reduction in Content of Bromine Compounds in the Product Oil of Pyrolysis Using Synthetic Hydrotalcite

Morita¹,

Wajima²,

Nakagome³

2015

IJCEA

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“…Brominated epoxy resin pyrolyzes to form tetrabromobisphenol A, which could be further decomposed to other compounds as shown in this study (Barontini et al 2004a, b;Marsanich et al 2004). In addition, Vasile et al (2007) used computer scrap, i.e., PCBs, casings, and keyboards, to produce oil and high aromatic fraction content in liquid oil. Furthermore, it is possible that bromobisphenol A and brominated bromobisphenol A (2.3-10%) were found in the liquid product because they did not completely decompose during the pyrolysis process (Barontini et al 2004b;Barontini et al 2005;Grabda et al 2009).…”

Section: Element Compositionsmentioning

confidence: 99%

Characteristics of exhaust gas, liquid products, and residues of printed circuit boards using the pyrolysis process

Chiang

2009

Environ Sci Pollut Res

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Brominated and chlorinated compounds-i.e., dichloromethane, trans-1,2 dichloroethylene, cis-1,2 dichloroethylene, 1,1,1-trichloroethane, tetrachloromethane, bromophenol, and bromoform-could be high, up to the several parts per million (ppm) level. Low molecular weight volatile organic compounds (VOCs)-i.e., methanol, acetone, ethyl acetate, acrylonitrile, 1-butene, propene, propane, and n-butane-contributed a large fraction of VOCs. The concentrations of toluene, benzene, xylene, ethylbenzene, and styrene were in the ppm range.

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“…The performance of the fly ash-derived catalyst was similar to that of commercially available catalysts. Vasile et al [44] used the commercial catalyst DHC-8 for the hydrogenation of thermosets derived from computers. Since thermosets contain high amounts of heteroatoms and also flame retardants, the hydrogenation removed toxic compounds from the product oil.…”

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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Feedstock recycling from plastics and thermosets fractions of used computers. II. Pyrolysis oil upgrading

Cited by 68 publications

References 13 publications

Reduction in Content of Bromine Compounds in the Product Oil of Pyrolysis Using Synthetic Hydrotalcite

Reduction in Content of Bromine Compounds in the Product Oil of Pyrolysis Using Synthetic Hydrotalcite

Characteristics of exhaust gas, liquid products, and residues of printed circuit boards using the pyrolysis process

Feedstock recycling of waste polymeric material

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