Reaction of polyvinyl chloride with calcium and magnesium oxides

Rudometova, O. V.; Vnutskikh, Zh. A.; Федоров, А. А.; Chekryshkin, Yu. S.

doi:10.1134/s1070427208010242

Cited by 3 publications

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“…• C. The relative amount of carbon bound α C was 64-71% and α Cl 64-89%, which is comparable with the values obtained for the Ca(OH) 2 -PVC system [17].…”

Section: Resultssupporting

confidence: 78%

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Studies of Recycling of Poly(vinyl chloride) in Molten Na, Ca ‖ NO₃, OH Systems

Федоров

Chekryshkin

Горбунов

2012

ISRN Chemical Engineering

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The interaction of poly(vinyl chloride) (PVC) with components of molten inorganic systems at the temperature range 200-500• C was studied by a combination of thermogravimetric and differential-thermal methods. The results of this study show that the melts of alkali and alkaline-earth metal nitrates can be used for utilization of wastes of halogen-containing polymeric materials. It was established that unique solid products of interaction of PVC with components of the Ca(NO 3 ) 2 -Ca(OH) 2 mixes are ecologically safe calcium chloride and carbonate. Their formation proceeds in three stages including reactions of PVC dehydrochlorination, interactions of formed hydrocarbon residue and hydrogen chloride with calcium hydroxide and calcium nitrate, oxidation of the hydrocarbon residue, and carbonation of calcium hydroxide. A scheme for the oxidative degradation of PVC and for the binding of chlorine and carbon from the polymer in the reactions with components of Ca(NO 3 ) 2 -NaNO 3 and Ca(NO 3 ) 2 -Ca(OH) 2 mixtures was suggested, involving a series of consecutive and parallel reactions.

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“…• C. The relative amount of carbon bound α C was 64-71% and α Cl 64-89%, which is comparable with the values obtained for the Ca(OH) 2 -PVC system [17].…”

Section: Resultssupporting

confidence: 78%

“…2-4). The weight variation pattern, thermal events, and their maxima in the temperature range 20-600 • C were essentially the same as for the Ca(OH) 2 -PVC blend [17]: weight loss in the range of 225-420…”

Section: Resultsmentioning

confidence: 56%

Studies of Recycling of Poly(vinyl chloride) in Molten Na, Ca ‖ NO₃, OH Systems

Федоров

Chekryshkin

Горбунов

2012

ISRN Chemical Engineering

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Recovery of liquid fuel from fossil-based solid wastes via pyrolysis technique: A review

Abnisa

Alaba

2021

Journal of Environmental Chemical Engineering

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On the Environmental Hazard of Burning Organic Waste in the Presence of Chlorine Compounds

et al. 2018

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The problems of formation of toxic chlororganic compounds during waste incineration in the presence of organic and inorganic chlorine compounds are considered. It is shown that the radical mechanism of pyrolysis leads to different products with different composition of the initial substances. It was found that the greatest environmental danger is the joint burning of chlororganic and aromatic compounds. When burning polyvinyl chloride together with other polymeric materials, especially the aromatic structure, not only light chlororganic compounds are formed, but also highly toxic carbonyl chloride and chlor-furan. The formation of the above compounds represents a potential danger of further chemical conversions and the production of chlorinated dioxin compounds. It is proposed to prevent the formation of highly toxic compounds from the burning of polyvinyl chloride, its mandatory separation from the solid municipal waste stream and its separate processing by flameless methods.

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Reaction of polyvinyl chloride with calcium and magnesium oxides

Cited by 3 publications

References 3 publications

Studies of Recycling of Poly(vinyl chloride) in Molten Na, Ca ‖ NO₃, OH Systems

Studies of Recycling of Poly(vinyl chloride) in Molten Na, Ca ‖ NO₃, OH Systems

Recovery of liquid fuel from fossil-based solid wastes via pyrolysis technique: A review

On the Environmental Hazard of Burning Organic Waste in the Presence of Chlorine Compounds

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Reaction of polyvinyl chloride with calcium and magnesium oxides

Cited by 3 publications

References 3 publications

Studies of Recycling of Poly(vinyl chloride) in Molten Na, Ca ‖ NO3, OH Systems

Studies of Recycling of Poly(vinyl chloride) in Molten Na, Ca ‖ NO3, OH Systems

Recovery of liquid fuel from fossil-based solid wastes via pyrolysis technique: A review

On the Environmental Hazard of Burning Organic Waste in the Presence of Chlorine Compounds

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Product

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Studies of Recycling of Poly(vinyl chloride) in Molten Na, Ca ‖ NO₃, OH Systems

Studies of Recycling of Poly(vinyl chloride) in Molten Na, Ca ‖ NO₃, OH Systems