Chemical elimination of the harmful properties of asbestos from military facilities

Pawełczyk, Adam; Božek, František; Grabas, K.; Chęcmanowski, Jacek

doi:10.1016/j.wasman.2016.11.041

Cited by 25 publications

(7 citation statements)

References 14 publications

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“…The preference for recycling compared to landfill disposal is specified in the European Directive [13], since recycling is the best solution, as it reduces environmental impact and the consumption of primary raw materials. In this regard, although the crystal-chemical transformation induced by the thermal treatment of asbestos is the most common transformation process [14][15][16][17][18][19][20][21][22][23], other processes such as biological treatment, dissolution by acid, thermochemical and mechano-chemical processes have been used for treating ACMs during the last two decades [24][25][26][27][28][29][30][31][32]. In particular, mechano-chemical treatment, which could be used for disposing of and/or recycling asbestos, is capable of increasing particle reactivity [33], reducing the sintering temperature [34] and reducing the thermal decomposition temperature [35,36].…”

Section: Introductionmentioning

confidence: 99%

Effect of Grinding on Chrysotile, Amosite and Crocidolite and Implications for Thermal Treatment

2018

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Nowadays, due to the adverse health effects associated with exposure to asbestos, its inertization is one of the most important issues of waste risk management. Based on the research line of mechano-chemical and thermal treatment of asbestos containing materials, the aim of this study was to examine the effects of dry grinding on the structure, temperature stability and fibre size of chrysotile from Balangero (Italy), as well as standard UICC (Union for International Cancer Control) amosite and standard UICC (Union for International Cancer Control) crocidolite. Dry grinding was accomplished in an eccentric vibration mill by varying the grinding time (30 s, 5 and 10 min). Results show a decrease in crystallinity, the formation of lattice defects and size reduction with progressive formation of agglomerates in the samples after the mechanical treatment. Transmission electron microscopy (TEM) results show that the final product obtained after 10 min of grinding is composed of non-crystalline particles and a minor residue of crystalline fibres that are not regulated because they do not meet the size criteria for a regulated fibre. Grinding results in a decrease of temperature and enthalpy of dehydroxylation (∆H dehy ) of chrysotile, amosite and crocidolite. This permits us to completely destroy these fibres in thermal inertization processes using a lower net thermal energy than that used for the raw samples.

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Section: Introductionmentioning

confidence: 99%

Effect of Grinding on Chrysotile, Amosite and Crocidolite and Implications for Thermal Treatment

2018

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“…As a result of the ionization process, asbestos fibers are destroyed (Martin et al, 2017). In the United States, where the use of asbestos products has not been banned, coating asbestos products with special means without removing them in buildings has gained great popularity (Pawełczyk et al, 2017).…”

Section: Methods Of Recycling Of Asbestos-cement Wastementioning

confidence: 99%

Recycling of Asbestos-Cement Waste – An Opportunity or a Threat?

Brycht

2022

System Safety: Human - Technical Facility - Environment

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Asbestos-cement waste from roof coverings and facades are classified as hazardous materials and should be successively removed from buildings. The current management of these wastes is limited to their controlled depositing in landfills, which does not ultimately solve the problem of their impact on the environment in the future. The article presents the current state of disposal of asbestos in Poland, with particular emphasis on the Silesian Voivodeship. The literature reports on the methods of neutralizing this type of waste and the possibility of their recycling were analyzed. It was found that the most popular way of recycling asbestos waste is thermal treatment, and the least effective - chemical treatment. Unfortunately, legal barriers prevent the spread of these solutions in the country in practice, despite the fact that safe methods of recycling asbestos-cement products are known.

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“…Innumerable studies have been conducted to elucidate the safe ways of disposing of asbestos (Kusiorowski et al, 2012;Paolini et al, 2019;Pawełczyk et al, 2017). Thermal conversion has been widely assessed as a suitable solution for ACM.…”

Section: National Guidelines On Asbestos and Its Limitationsmentioning

confidence: 99%

Towards a Circular Economy: A Review on Asbestos Waste Management Regulations in Kenya

Nabango

Majale

2022

East Afr. j. environ. nat. resour.

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Kenya banned the use of asbestos in 2006, given its carcinogenic effects. Consequently, regulatory and institutional guidelines have been established to ensure the safe disposal of hazardous material. Yet, Kenya still uses 10% of its national health allocations to treat asbestos-related infirmities. The goal of this article is to review the policy guidelines for disposal of asbestos and assess its robustness as a measure of socio-environmental risk reduction. The study utilises a systematic review of policy guidelines on asbestos, air, and water quality regulations against their implementation reviewed in Environmental Impact Assessment reports from 2013 to 2021. Studies assessing thermal and chemical treatment processes for asbestos are reviewed to assess the processes involved and acquire information based on efficiency in terms of cost, technological applicability, and minimal environmental effects. The review shows that more risks are inherent from landfilling, which is considered safe in the regulations. Examples include compromised standards of disposal and unforeseen risks arising from geologic activity that may create channels for leaching and other exposure pathways. This review proposes that the policy guidelines should ‘rethink’ and adopt conversion of the substance through processes such as dissolution in acids (and) or thermal conversion processes. The processes guarantee the elimination of the fibres and yield by-products that can be further processed, namely, glass and fertilisers. Additionally, they reduce waste and relieve landfills while optimising land use. Despite the high initial costs, the merits of the process offer significant trade-offs. There is a need for comprehensive data collection, especially on volume, detailed geophysical information, type of Asbestos Containing Material and coherence of policy guidelines. This sets precedence for the adoption of a circular economy which Kenya is determined to embrace. Also, it will present an opportunity for research and innovation that will contribute to a global knowledge base.

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Chemical elimination of the harmful properties of asbestos from military facilities

Cited by 25 publications

References 14 publications

Effect of Grinding on Chrysotile, Amosite and Crocidolite and Implications for Thermal Treatment

Effect of Grinding on Chrysotile, Amosite and Crocidolite and Implications for Thermal Treatment

Recycling of Asbestos-Cement Waste – An Opportunity or a Threat?

Towards a Circular Economy: A Review on Asbestos Waste Management Regulations in Kenya

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