Transformations of chlorinated organic additives in polystyrene in the course of oxidative pyrolysis

Кетов, А. А.; Красновских, М П; Максимович, Н. Г.

doi:10.1134/s1070427213100145

Cited by 4 publications

(5 citation statements)

References 3 publications

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“…Плав горит, усиливает и ускоряет процесс горения. Это соответствует показателям Г4 (сильногорючие) и В3 (легковоспламеняемые) и совпадает с результатами экспериментальных исследований по пожароопасности пенополистиролов, изложенными в работах [5][6][7][8][9]13].…”

Section: си боровик ип палатинская аи солдатовunclassified

“…Основной объем в нем зани-мает газ (соотношение С:H  1:1). Поэтому ППС легко загорается, горит интенсивно с выделением токсичных продуктов, образующихся при их неполном сгорании [4][5][6][7][8][9].…”

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“…Однако статистика причин пожаров [13], а также проведенные исследования [4][5][6][7][8][9] установили, что главная опасность наружных фасадных систем с пенополистирольными плитами -их способность к распространению огня на выше-и ни-…”

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Criteria of Assessing the Efficiency of Fire-Retardant Coatings for Polystyrene Foam Heat-Insulation Materials

Borovik¹,

Palatinskaya²,

Soldatov³

2019

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This work presents the results of studies on reducing the fire hazard with regard to heatinsulation polystyrene foam materials by applying fire-retardant coatings to them using two methods: surface method, with which a protective layer is formed on the surface; and the wholevolume method, with which the saturating composition penetrates inside the material's structure. As fire-retardant coatings, water-based compositions of inorganic substances have been used; and non-combustible mineral substances have been used as additives. Samples of polystyrene foam plates of grade PPS-20 (as per GOST 15588-2014) or (PSB-S-25-sel-extinguishing as per GOST 15588-1986) have been used for the research. The behavior specifics of the material treated with fire-retardant compositions have been studied during the tests on combustibility, flammability, and smoke generation. The criteria of assessing the efficiency of using fire-retardant coatings for polystyrene foam materials have been suggested.

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Section: си боровик ип палатинская аи солдатовunclassified

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Criteria of Assessing the Efficiency of Fire-Retardant Coatings for Polystyrene Foam Heat-Insulation Materials

Borovik¹,

Palatinskaya²,

Soldatov³

2019

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“…This phenomenon can be prevented by adding biocides such as As, Sb, and Sn during polymer production (Campanale et al 2020). Additives such as compounds S, Br, and Cl are added to create re resistance for polystyrene (PS) materials (Alekseev et al 2001;Ketov et al 2013;Braun et al 2015). Antimony is commonly used as a ame retardant additive.…”

Section: Introductionmentioning

confidence: 99%

“…Directive 94/62/EC on packaging and packaging waste limits toxic metals such as Hg, Pb, Cr 6+ The aim of the present study was to analyze concentrations of hazardous substances contained in foodgrade plastic and provide modeling results of a life cycle impact assessment (LCIA) to determine the impact of hazardous substances on human health and the ecosystem. LCIA is a tool of product life cycle assessment to understand and estimate the magnitude and signi cance of potential environmental impacts added in a product system throughout its life cycle (Jolliet et al 2015). Several LCIA impact assessment methods have been developed with different approaches to resolve issues related to environmental and human impacts.…”

Section: Introductionmentioning

confidence: 99%

A regional approach for health risk assessment of toxicants in plastic food containers

et al. 2023

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Plastic food containers are being used popularly, generating a waste of about 115 million tons in Vietnam. Such waste is causing environmental and health issues. This study conducted a eld survey with 309 local people and selected 59 samples out of 135 plastic food containers collected in Go Vap district, Vietnam. Collected plastic samples identi ed compositions were PET 13.6 %, PP 28.8 %, PS 16.9 %, and 40.7 % X. Although most people are aware of the toxicity of plastics, plastics are still widely used due to their convenience and price with easy use and purchase. Collected plastic samples were classi ed based on the plastic type using recycling code and quantitatively analyzed with X-ray uorescence spectroscopy method to assess concentrations of Cd, Sb, Pb, Hg, Sn, Cr, Br, Cl, and S. Most of these collected plastic samples (91.5 %) were found to contain 8/9 hazardous substances and most elements contained in these plastics were below their standard thresholds. However, elements Cl and Sb exceeded their safe thresholds, reached the highest concentrations of 1990.3 ppm and 469.2 ppm, respectively. Thus, additional health risks need to be assessed using the USEtox model. Finally, this study proposed a screening process to assess the risk of toxicity of elements contained in plastic food containers through ISO 31000:2018.

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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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Transformations of chlorinated organic additives in polystyrene in the course of oxidative pyrolysis

Cited by 4 publications

References 3 publications

Criteria of Assessing the Efficiency of Fire-Retardant Coatings for Polystyrene Foam Heat-Insulation Materials

Criteria of Assessing the Efficiency of Fire-Retardant Coatings for Polystyrene Foam Heat-Insulation Materials

A regional approach for health risk assessment of toxicants in plastic food containers

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

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