Moist waste coal properties and recycling prospects

Пашкевич, М. А.; Petrova, Tatyana A.; Sverchkov, Ivan

doi:10.17580/or.2017.01.09

Cited by 3 publications

(3 citation statements)

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“…( 3 This was manifested in the ochre coloration of the sediments and the abnormally high concentration of total iron in them (up to 24%) (Table 1). The freshly formed Fe(OH) 3 actively adsorbs ore metals [Lytaeva & Isakov 2017, Pashkevich et al 2017a, Pashkevich et al 2017b]. This is indicated by the high concentration of Cu (up to 0.885%) and Zn (up to 0.298%) in bottom sediments (Table 1).…”

Section: Resultsmentioning

confidence: 99%

“…The issue of the environmental state of minor rivers and other water bodies was considered in numerous works, and much attention was paid to the development of the environmental protection measures to prevent pollution of small rivers by enterprises of various industries [Isakov & Chukaeva 2016, Strakhovenko et al 2016]. Nevertheless, despite the state of knowledge, the problem of environmentally efficient and economically expedient technogenic sediment utilization remains unsolved [Chalov 2015b, Pashkevich et al 2017a, Pashkevich et al 2020.…”

Section: Introductionmentioning

confidence: 99%

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Bottom Sediments in a River under Acid and Alkaline Wastewater Discharge

Kharko

Matveeva

2021

Ecol. Eng. Environ. Technol.

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The drainage flows of metal loads into the drainage and infiltration waters of mine dumps of enterprises have a dramatic effect on small rivers in industrial regions. The paper considers the outcomes of geochemical monitoring of the Karagaily River and assesses the transformation of the acid-base conditions depending on the influence of the facilities of the enterprise. The results of engineering and environmental surveys, including sampling of bottom sediments, laboratory preparation, chemical elemental analysis of samples and X-ray diffraction analysis of mineral composition, were presented. A complex technogenic alkaline sorption-hydroxide barrier was found at the mixing point of acidic river waters (the influence of dump and quarry waters) and alkaline wastewater of treatment facilities, where the deposited iron hydroxide adsorbs ore minerals, which reduces their outflow into larger rivers and increases the self-purification potential of the river. Further interaction of iron hydroxide with the acid mine drainage and calcium bicarbonate of wastewater results in pyritization of bottom sediments. Excavation and dewatering of the pyrite-containing bottom sediments will allow their joint use with tailings and ore-processing waste for re-extraction useful components.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bottom Sediments in a River under Acid and Alkaline Wastewater Discharge

Kharko

Matveeva

2021

Ecol. Eng. Environ. Technol.

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“…Lake sediments of lakes are a kind of depositing medium and are able to accumulate the information of the ecological state of the entire catchment area of the lake. Contaminants entering water bodies are a source of primary pollution [1][2][3]. Then lake sediments gradually accumulate these contaminants and become a source of secondary pollution of water bodies.…”

Section: Introductionmentioning

confidence: 99%

Lakes as an archive of the region ecological state information

Shalnova

Kulakov

2020

E3S Web Conf.

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The study’s results of various lakes located on the border of the forest and forest-steppe areas of Siberia, Altai and Kazakhstan are presented in the article. This research was carried out by participants of the international Russian-German expedition “Following the Traces of Alexander von Humboldt in Western Siberia, Altai and East Kazakhstan”, devoted to the 250th anniversary of the birth of the outstanding scientist and the 190th anniversary of his expedition to the Russian Empire. The results of geochemical and pollen analyses of water samples and lake sediments are presented. An assessment of the ecological state of the lakes is given, as well as a rapid assessment of the ecological state of the studied regions.

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