Minimisation of environmental effects related with storing fly ash from combustion of hard coal

Obraniak, Andrzej; Gluba, T.; Ławińska, Katarzyna; Derbiszewski, Bogdan

doi:10.37190/epe180412

Cited by 14 publications

(8 citation statements)

References 20 publications

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“…The strength parameters of the granules were strongly influenced by the application of a water glass solution. This dependence was also obtained in a paper concerning the disc granulation of fly ash and a few percent addition of a filler (bentonite) [90]. Another study investigated the possibility of using a sodium silicate solution in a drum granulation process for biowaste granules [91].…”

Section: Discussionmentioning

confidence: 55%

Production of Agglomerates, Composite Materials, and Seed Coatings from Tannery Waste as New Methods for Its Management

Ławińska

2021

Materials

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This paper presents methods for managing waste produced by the leather industry, including tanning shavings derived from chrome tanning technologies and collagen preparations. Shavings were classified according to their shape (in accordance with Zingg’s shape classification). The content of individual elements was determined, together with the content of volatile organic compounds. Two new products were developed as part of the completed works: agglomerates (methods of non-pressure granulation) and composite materials were produced on the basis of tanning shavings and mineral fillers. Young’s modulus values classify these composite materials in the group of polymers and certain materials from the group of elastomers. A method for seed coating (on the example of legumes and rape) was also developed using a disc granulator, including collagen preparations in one of the layers as a solution for preventing the effects of droughts (biostimulant). The analyses of selected properties of the new products confirm the wide possible application of waste shavings and collagen preparations in a circular economy, especially in the construction, packaging, and agricultural sectors.

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Section: Discussionmentioning

confidence: 55%

Production of Agglomerates, Composite Materials, and Seed Coatings from Tannery Waste as New Methods for Its Management

Ławińska

2021

Materials

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“…The breakage of granules has consequences in the processing, transport, and final use of granular products [ 18 ]. The guild granules produced as part of the work are more resistant to discharge than fly ash granules from coal combustion [ 42 ] with the addition of water glass and bentonite solutions produced by the disc granulation method [ 43 ]. The strength parameters of the granules are strongly influenced by the addition of water glass solution.…”

Section: Discussionmentioning

confidence: 99%

Obtaining Granules from Waste Tannery Shavings and Mineral Additives by Wet Pulp Granulation

et al. 2020

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This paper presents the results of research on the granulation process of leather industry waste, i.e., tanning shavings. It is economically justified to granulate this waste together with mineral additives that are useful in the processes of their further processing. Unfortunately, the granulation of raw, unsorted shavings does not obtain desired results due to their unusual properties. In this study, the possibilities of agglomeration of this waste were examined by a new method consisting of the production and then the granulation of wet pulp. During granulation, no additional binding liquid is added to the granulated bed. As part of this work, the specific surface of granulated shavings, the granulometric composition of the obtained agglomerates, and their strength parameters were determined. The use of a vibrating disc granulator, the addition of a water glass solution (in the pulp), dolomite, and gypsum made it possible to obtain durable, mechanically stable granules.

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“…Fine coal granulation was used to produce alternative fuel for combustion in fluidized bed furnaces. The addition of these fuels to the stationary fluidized bed resulted in an increased combustion efficiency [35].…”

Section: Production Of Solid Fuel From the Fine Coalmentioning

confidence: 99%

Using Agglomeration Techniques for Coal and Ash Waste Management in the Circular Economy

Borowski¹,

Alsaqoor²,

Alahmer³

2021

Adv. Sci. Technol. Res. J.

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This is a scoping review of agglomeration techniques to obtain of solid bodies from particle waste-materials for their utilization. For this purpose, the granulation and briquetting of fine coal and fly ash were presented in detail. Many successful works on solid fuels production, with coal only, and also with the addition of biomass, were presented. During the solid fuel combustion in power boilers, significant amounts of ash are generated. The properties of fly ashes were taken into consideration, and different methods of their utilization were proposed to obtain a wide range of useful products. Consequently, the waste resources of coal and ash were fully utilized. In final remarks, it was concluded, that the agglomeration techniques play an important role in waste management, but particularly in the circular economy.

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Minimisation of environmental effects related with storing fly ash from combustion of hard coal

Cited by 14 publications

References 20 publications

Production of Agglomerates, Composite Materials, and Seed Coatings from Tannery Waste as New Methods for Its Management

Production of Agglomerates, Composite Materials, and Seed Coatings from Tannery Waste as New Methods for Its Management

Obtaining Granules from Waste Tannery Shavings and Mineral Additives by Wet Pulp Granulation

Using Agglomeration Techniques for Coal and Ash Waste Management in the Circular Economy

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