Preparation of Activated Shungite and Characterization of Its Chemical Composition and Adsorption Properties

Казанкапова, М. К.; Наурызбаев, М. К.; Ефремов, С. А.; Ermagambet, B. T.; Nurgaliyev, N. U.; Нечипуренко, С. В.

doi:10.3103/s0361521919040086

Cited by 6 publications

(5 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The shungite fraction ShT20 has the highest cytotoxicity. The obtained data are confirmed by other research [24][25][26].…”

Section: Discussionsupporting

confidence: 90%

“…The ability of these compounds to exhibit antiradical activity against the DPPH radical was shown [25]. Gharbi et al (2005) proved the protective effect of C60-fullerene, due to its pronounced antioxidant properties, in studies on rats with acute intoxication caused by carbon tetrachloride [26]. The optimal fraction of shungite exhibiting maximum antioxidant activity is proven to be 20 µm.…”

Section: Discussionmentioning

confidence: 97%

See 1 more Smart Citation

A Study of the Antioxidant, Cytotoxic Activity and Adsorption Properties of Karelian Shungite by Physicochemical Methods

et al. 2021

View full text Add to dashboard Cite

This study reveals that fossil shungite samples exhibit antioxidant activity, can reduce oxidized components, and bind to free radicals. A sample of Sh20 (size fraction—20 μm) (1.30 mg equivalents of ascorbic acid/g of shungite; 3.46 mg equivalents of trolox/g of shungite; 0.99 mg equivalents of quercetin/g of shungite) had the maximal activity according to the amperometric method. The obtained data indicate that shungite has antioxidant properties, but these are approximately 1000 times less pronounced than those of quercetin. A ShT20 sample (size fraction—20 μm + heat treatment) was found to have the highest antioxidant activity against the 2,2-diphenyl-1-picrylhydrazyl radical and cytotoxicity. Further studies, including the optimization of the antioxidant extraction conditions of shungite, and the analysis of the qualitative and quantitative composition of the obtained extracts, are required for a more accurate interpretation of the results. Shungite can be applied as an alternative to activated carbon in water purification, due to its absorption, catalytic, antioxidant, regenerating, and antibacterial properties, as well as its high environmental safety and relatively low cost. It is possible to identify new structural forms of carbon within, and other valuable properties of, shungite substance, which will make it possible to create effective technologies for the practical use of shungite rocks, particularly in the production of fullerenes and other carbon nanoclusters.

show abstract

“…The shungite fraction ShT20 has the highest cytotoxicity. The obtained data are confirmed by other research [24][25][26].…”

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 97%

A Study of the Antioxidant, Cytotoxic Activity and Adsorption Properties of Karelian Shungite by Physicochemical Methods

et al. 2021

View full text Add to dashboard Cite

show abstract

“…A thermoelectric effect has been found in cement composites with shungite carbon. Similar properties are expected for materials filled with disordered carbon from the Bakyrchik occurrence, East Kazakhstan [ 109 , 110 ].…”

Section: Technological Applications Of Electrophysical Properties Of ...supporting

confidence: 68%

Electrophysical Properties and Structure of Natural Disordered sp2 Carbon

Golubev

Антонец

2022

Nanomaterials

View full text Add to dashboard Cite

The progress in the practical use of glassy carbon materials has led to a considerable interest in understanding the nature of their physical properties. The electrophysical properties are among the most demanded properties. However, obtaining such materials is associated with expensive and dirty processes. In nature, in the course of geological processes, disordered sp2 carbon substances were formed, the structure of which is in many respects similar to the structure of glassy carbon and black carbon, and the electrical properties are distinguished by a high-energy storage potential and a high efficiency of shielding electromagnetic radiation. Given the huge natural reserves of such carbon (for example, in the shungite rocks of Karelia) and the relative cheapness and ease of producing materials from it, the study of potential technological applications and the disclosure of some unique electrophysical properties are of considerable interest. In this paper, we present an overview of recent studies on the structure, electrophysical properties, and technological applications of natural disordered sp2 carbon with the addition of novel authors’ results.

show abstract

“…It was found that carbon materials with a more developed and ordered surface structure and increased porosity can be obtained as a result of the flotation enrichment of shungite and its subsequent thermal activation (Kazankapova et al, 2019). It was established by the Brunauer-Emmett-Teller (BET) method that thermal and vapor-gas activation of shungite leads to a significant increase in the specific surface of the sample and the specific pore volume, as well as to the decrease in the average pore size (Kazankapova et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Sorption of Oil by Mechanochemicaly Activated Shungite

Ongarbayev

Baigulbayeva

Zhumakhan

2022

MGPB

View full text Add to dashboard Cite

In the paper the sorption capacity of shungite rocks of the Koksu field (Kazakhstan) in relation to the oil from the Karazhanbas and Tengiz fields (Kazakhstan) were studied. Oil spills occurring during production, gathering, transportation, storage and refining, and repair work on wells are an urgent environmental problem. There are effective methods of soil purification, including particular interests addressed to sorption process. The aim of this research is to study oil sorption by shungite rocks of the Koksu deposit after mechanochemical activation. The mechanochemical activation of shungite rock samples was carried out in a planetary ball mill at different speeds of rotation and ratios of ball mass to the sample. The developed sorbents based on shungite rocks of the Koksu deposit were tested for cleaning samples of oil-contaminated soils and their sorption capacities under dynamic and static conditions were determined. For the sorption of oil, the sorbent based on shungite of shale grade (TS) after mechanochemical activation is recommended, which sorption capacity under dynamic conditions is 2.57-2.85 g/g. Sorption of oil from 10 % of oil contaminated soil samples with the sorbents based on shungite after mechanochemical activation showed sorption capacity of 0.44-0.45 g/g in 60 days under static conditions. The practical significance of the research lies in the prospects of using shungite rocks to clean up oil spills.

show abstract

Preparation of Activated Shungite and Characterization of Its Chemical Composition and Adsorption Properties

Cited by 6 publications

References 9 publications

A Study of the Antioxidant, Cytotoxic Activity and Adsorption Properties of Karelian Shungite by Physicochemical Methods

A Study of the Antioxidant, Cytotoxic Activity and Adsorption Properties of Karelian Shungite by Physicochemical Methods

Electrophysical Properties and Structure of Natural Disordered sp2 Carbon

Sorption of Oil by Mechanochemicaly Activated Shungite

Contact Info

Product

Resources

About