Research of effectiveness of natural and modified sorbents for wastewater treatment based on mica quartzite treatment waste

Research of effectiveness of natural and modified sorbents for wastewater treatment based on mica quartzite treatment waste

Автор: Araslanova L.Kh., Salmanova E.R., Solovyeva E.A., Larkina A.A., Tuktarova I.O., Nazarov A.M.

Журнал: Nanotechnologies in Construction: A Scientific Internet-Journal @nanobuild-en

Рубрика: Rational use of natural sources

Статья в выпуске: 1 Vol.11, 2019 года.

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Results of a research of efficiency of sorbents on the basis of the waste of production and processing of micaceous quartzites (MQ), montmorillonite clays (MC) modified by humic connections (HC), received by extraction of waste brown coal are shown. Chemical composition of mica quartzite processing waste depending on the fraction size was previously investigated: element structure by method of the power-dispersive X-ray fluorescent analysis and mineral structure by method of X-ray phase analysis, for purpose of interrelation establishment between the structure of fraction and adsorptive properties of the received composite sorbents and also for the purpose of an exception as a part of MQ and, respectively, a sorbent of dangerous and toxic substances I-III of hazard classes. The efficiency of adsorption of the obtained sorbents was studied, an increase in sorption activity was found depending on composition of sorbent and method of modification (preliminary temperature processing and drawing on a surface of a sorbent of HC nano- and a microdimensional layer). It is determined that the greatest efficiency of adsorption of ions of heavy metals is observed for the sorbent which underwent temperature modification at 800оC and then HC covered with a layer up to 1% of masses. Use of waste of MQ containing 40–60% of quartz (SiO2) in composition with MC and with further modification of a surface (up to 1% of masses.) humic connections will allow receiving highly effective, universal and inexpensive sorbents for sewage treatment from heavy metals and other pollutants. The offered composite sorbents will allow to solve several ecologically important problems in a complex: to carry out effective purification of industrial sewage (machine and instrument-making, metallurgical, petrochemical and other enterprises) of heavy metals ions and to utilize waste of micaceous quartz processing of and brown coal extraction.

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Waste, micaceous quartzite, montmorillonite clays, humic connections, surface modifying, sewage treatment, heavy metals ions

Короткий адрес: https://sciup.org/142227529

IDR: 142227529   |   DOI: 10.15828/2075-8545-2019-11-1-106-116

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