Petrology and industrial application of main diatomite deposits in the Transuralian region (Russian Federation)

Smirnov, Pavel; Konstantinov, Alexandr; Gursky, Hans-Jürgen

doi:10.1007/s12665-017-7037-3

Cited by 11 publications

(7 citation statements)

References 27 publications

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“…Natural diatomite has a high surface area, which indicates a high adsorption and chemisorption capacity [20,21]. The sorption capacity can be significantly increased by modifying the surface layers, which is confirmed by the literature data [10,18,20,22,23]. The purpose of this study is to substantiate the possibility of modified diatomite utilization for the purification of wastewater from heavy metal ions.…”

Section: Introductionsupporting

confidence: 54%

“…1. Acid activation dissolves iron compounds, releases micro-and nanopores and results in an increased sorption activity [11,15,22], but adsorption equilibrium is reached much more slowly (Fig. 1).…”

Section: Resultsmentioning

confidence: 99%

“…Its chemical composition (%) was determined by infrared spectroscopy: SiO2 (silicon oxide) -82.4; Al2O3 (aluminum oxide) -2.7; Fe2O3 -1.8; CaO 1.88; MgO 0.91; other impurities -9.1. In addition to silica, the composition contains crystals of salts of calcium, sodium, iron, aluminum, various organic compounds (9-10 %) [1,10,22].…”

Section: Methodsmentioning

confidence: 99%

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Applicability of the modified diatomite for treatment of wastewater containing heavy metals

et al. 2021

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The paper studies various modifications of diatomite, aiming at creating sorbents for wastewater purification from heavy metal ions. Diatomite of the Akhmatovskoe deposit of the Penza region was considered as a raw material. The processes of physical and chemical modification of diatomite were investigated. Adsorption isotherms were constructed, quantitative characteristics of adsorption of copper ions on the surface of modified sorbents were obtained. A chemical modification (acidic and alkaline) is proposed, which results in an increased adsorption capacity for heavy metal ions. The applicability of diatomite for the purification of highly concentrated wastewater containing heavy metals is shown.

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Section: Introductionsupporting

confidence: 54%

Section: Resultsmentioning

confidence: 99%

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Applicability of the modified diatomite for treatment of wastewater containing heavy metals

et al. 2021

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“…These rocks successively compose the primary part of the Paleocene-Eocene siliceous sequence, and they were formed before (Paleocene diatomites of the Brusyana section) and after the PETM (Eocene diatomites of the Irbit deposit and Eocene diatomaceous clays of the Shadrinsk deposit). The age of the rocks being studied was reliably established based on the results of diatom analysis in the previous work [7].…”

Section: Objects and Analytical Methodsmentioning

confidence: 99%

“…Since their discovery in the 1930s, these deposits have been used in industrial production. Despite a significant volume of previous work devoted to biosiliceous rocks of the Transuralian region and Western Siberia [1][2][3][4][5][6][7][8], the mineralogical and geochemical features of the sediments under consideration have been insufficiently studied.…”

Section: Introductionmentioning

confidence: 99%

Clay Minerals and Detrital Material in Paleocene–Eocene Biogenic Siliceous Rocks (Sw Western Siberia): Implications for Volcanic and Depositional Environment Record

et al. 2020

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The paper presents the results of a study on clay minerals and detrital material of biosiliceous rocks (Paleocene–Eocene) from three sections in the Transuralian region. The authigenic processes in sediments resulted in the formation of dioctahedral clay minerals (illite, smectite) and insignificant amounts of sulfide phases (pyrite, hydrotroillite). Detrital minerals from the studied diatomites and diatomaceous clays often have a subangular and semi-rounded habit that is evidence of a low degree alteration of the sedimentary material in the provenance areas. The high degree of preservation of the bioclastic debris and the transformation of the limited volcanogenic substratum in clay minerals apparently was possible by initial burial diagenesis. The morphology of kaolinite and illite suggests that these mineral formations were caused by diagenesis with feldspars and smectites as a substrate for their formation. The smectite zone of weathering crust that developed on the adjacent land could have also served as a significant source of smectites entering the sea basin. The association with smectite in aggregates of mixed clayey composition indicates a sequential smectite-to-illite reaction via mixed-layered minerals. Such minerals as amphiboles, pyroxenes, and olivines, semi-stable to transportation and genetically associated with ultramafic rocks, form a significant part of the clastic fraction of the rock, indicating the proximity of provenance areas. This is the evident reason that the provenance areas made of mafic and ultramafic rocks played an essential role.

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Variability in distribution of major and trace elements in Lower Eocene siliceous sections of the Transuralian Region, Russia

et al. 2018

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Petrology and industrial application of main diatomite deposits in the Transuralian region (Russian Federation)

Cited by 11 publications

References 27 publications

Applicability of the modified diatomite for treatment of wastewater containing heavy metals

Applicability of the modified diatomite for treatment of wastewater containing heavy metals

Clay Minerals and Detrital Material in Paleocene–Eocene Biogenic Siliceous Rocks (Sw Western Siberia): Implications for Volcanic and Depositional Environment Record

Variability in distribution of major and trace elements in Lower Eocene siliceous sections of the Transuralian Region, Russia

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