Preparation and Study of Carbon-Mineral Sorbents Based on Novogorod Sapropel. Part 1

• Published in: Fibre chemistry Vol. 50; no. 5; pp. 408 - 413
• Main Authors: Zykova, I. V., Isakov, V. A.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-01-2019; Springer; Springer Nature B.V
• Subjects: Bentonite; Carbon; Carbonization; Chemical wastes; Chemistry; Chemistry and Materials Science; Clay minerals; Decontamination; Differential thermal analysis; Heat treatment; Infrared analysis; Infrared spectroscopy; Organic Chemistry; Pollutants; Polymer Sciences; Sorbents; Spectroscopy; Wastewater; Water pollution
• ISSN: 0015-0541; 1573-8493
• DOI: 10.1007/s10692-019-09999-y

Comprehensive decontamination of natural and waste waters from various chemical pollutants is a critical problem so that the development of new sorbents has high scientific and practical value. Heat treatment of sapropel—bentonite-clay mixtures could produce a bifunctional carbon-mineral sorbent that acted simultaneously as a sorbent for polar and nonpolar species. IR spectroscopy, elemental analysis, and combined thermal analysis (TG-DSC/DTA) found that the sapropel organic component was practically completely removed at carbonization temperatures 600 and 700°C. The release of volatile products gave the sorbent a porous structure and also altered the surface composition and properties. Mixtures carbonized at these temperatures had comparable amounts of organic and inorganic components.