Purification of Oil-Contaminated Wastewater with a Modified Natural Adsorbent

Chukaeva, M. A.; Matveeva, V. A.; Sverchkov, Ivan

doi:10.12912/27197050/133331

Cited by 5 publications

(2 citation statements)

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“…табл.2). При попадании в поверхностные воды они могут быть источником повышенных концентраций загрязняющих веществ в водоемах, аккумулироваться в почвах, флоре и фауне [26,27].…”

Section: классификация») оба исследуемых образца содержат большоеunclassified

Complex processing of high-carbon ash and slag waste

Chukaeva

Matveeva

Sverchkov

2022

PMI

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The paper considers a current issue of ash and slag processing for the Polyus Aldan JSC, that has accumulated over 1 million tons of this waste. Following the results of the review of Russian and foreign literature, four promising areas of their use were selected: road construction, building materials, reclamation of disturbed lands, and inert aggregates. To assess the possibility of implementing the selected disposal directions, the samples of ash and slag waste of the enterprise were sampled and analyzed. Fuel characteristics, chemical and mineral composition, as well as physico-chemical and mechanical properties of waste were determined. Taking into account the results of complex laboratory studies and the requirements of regulatory documents, each of the selected areas of using ash and slag waste was evaluated. It was found that their disposal by traditional methods has limitations, mainly related to the high content of unburned fuel residues. The high content of combustible substances and the high specific heat of combustion with a relatively low ash content suggested the possibility of thermal disposal of the studied waste. Based on the literature data, the characteristics of the preparation of organic coal-water suspensions based on the studied ash and slag waste were selected. As a result of a series of experiments on their flaring, the expediency of using the obtained fuel at the enterprise under consideration has been proved. The authors note the possibility of using ash obtained after thermal waste disposal in the road construction industry. The prospects for further research of technologies for the preparation and combustion modes of suspension fuel based on ash and slag waste are determined.

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Section: классификация») оба исследуемых образца содержат большоеunclassified

Complex processing of high-carbon ash and slag waste

Chukaeva

Matveeva

Sverchkov

2022

PMI

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“…Экспериментальные условия следующие: 40 kV, 40 mA, время экспозиции -2 c, размер шага -0,02º 2θ [26]. Обработка полученных данных выполнена с использованием пакета программных средств DIFFRACplus.…”

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Cementless concretes, based on anthropogenic wastes of the Irkutsk Oblast

Vabishevich,

Makarenko,

Khokhryakov

et al. 2024

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The accepted global trend of transition from a linear economy to a closed-loop one stimulated the development of regulatory documents, such as “Strategy for the development of building materials in the Russian Federation and Irkutsk Oblast”, Decree of the Government of the Russian Federation dated 08/02/2023 No. 2094, both at federal and regional levels. Further, the Baikal interregional scientific and educational centre was established. All this aims at obtaining technologies for developing effective building materials, based on technogenic wastes, and establishing the production. It is planned to obtain effective building materials, based on the accumulated high-tonnage waste of the Usolye-Sibirskoye priority development area, such as ash and slag mixtures of the combined heat and power plant (90 million tons) and lime-containing waste, generated during the production of acetylene at the Khimprom PJSC (more than nine million tons). The paper represents a fundamentally new approach to obtaining artificially synthesised newgrowths of cementless concrete, based on technogenic wastes, which meets the requirements of regulatory standards in terms of frost and water resistance and allows using this concrete in enclosing structures. At a rationally selected ratio between lime-containing wastes and an ash-slag mixture, subject to the pre-established principles of technological preparation in terms of their mechanical activation, mixing technology, conditions and synthesis duration, it is possible to obtain high-quality cementless concrete that meets the basic requirements of regulatory documents for quality indicators.

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