Silicophosphate Sorbents, Based on Ore-Processing Plants' Waste in Kazakhstan

Autor/inn/en	Kubekova, Sholpan N.; Kapralova, Viktoria I.; Telkov, Shamil A.
Titel	Silicophosphate Sorbents, Based on Ore-Processing Plants' Waste in Kazakhstan
Quelle	In: International Journal of Environmental and Science Education, 11 (2016) 12, S.4985-4996 (12 Seiten) PDF als Volltext kostenfreie Datei Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1306-3065
Schlagwörter	Foreign Countries; Wastes; Metallurgy; Natural Resources; Conservation (Environment); Chemistry; Industry; Kazakhstan + Suchen Sie Ihr Suchwort? Ausland; Gargabe; Abfall; Hüttenwesen; Natural Ressource; Natürliche Ressource; Conservation; Environment; Konservierung; Bewahung; Umwelt; Chemie; Industrie; Kasachstan
Abstract	The problem of ore-processing plants' waste and man-made mineral formations (MMF) disposal is very important for the Republic of Kazakhstan. The research of various ore types (gold, polymetallic, iron-bearing) MMF from a number of Kazakhstan's deposits using a complex physical and chemical methods showed, that the waste's main components are silicate and aluminosilicate compounds that can be used to produce adsorbents for fine purification of industrial and natural waters from heavy metals. According to the research, the only MMF of gold and polymetallic ores are environmentally safe for this purpose. Based on the samples, selected with thermal and acid methods, using phosphoric extraction acid, was synthesized a set of silicophosphate products. It was found, that under the optimum conditions, allowing to obtain insoluble porous products with high sorption activity, high the about 10-11% of final product have the mechanical strength and a heat treatment temperature of 400°C. It is shown, that the dynamic adsorption capacity of synthesized silicophosphate sorbents to copper cations is 1,85 - 2,5 mg = Cu[superscript 2+]/g. This allows conditioning of water for domestic and drinking purposes, cleaning waste water of heavy metal cations from enterprises, reduce the MMF deposits, or use the latter for the concentration of heavy metals to the level of economically viable industrial processing in the future. (As Provided).
Anmerkungen	LOOK Academic Publishers. Knobbelzwaansingel 211 Den Haag 2496LN, Netherlands. Tel: 31-20-217-0912; e-mail: editor@lookacademy.nl; Web site: http://www.ijese.net
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01