Abstract: The technology of mechanochemical oxidative modification of brown coal in solid phase was developed and scaled using flow-type equipment. With the oxidized brown coal (BCoX), the yield of humic substances extracts increased from 23 to 70% and the content of phenolic and carboxylic groups increased by 55 and 103%, respectively. BC(ox)performs as promising sorbent for heavy metal remediation of surface water, and its impact on the environmental fate of inorganic contaminants (heavy metals) was tested in a real freshwater body, namely, the Novosibirsk Water Reservoir on the Ob river. Experiments were carried out with the help of meso-modeling of water pollution with a mixture of Zn(II)-Cu(II)-Cd(II). The introduction of heavy metals into water suppresses the vital activity of phytoplankton in the first few days, but the phytoplankton then adapts and begins to propagate, sorbing the pollutants. The addition of the BCoX caused substantial acceleration of the withdrawal of heavy metals. The use of the BCoX did not cause water blooms, distinct from sorbents based on non-oxidized humic substances with the native structure. (C) 2018 Elsevier B.V. All rights reserved.

Cite: Skripkina T. , Bychkov A. , Tikhova V. , Smolyakov B. , Lomovsky O.
Mechanochemically oxidized brown coal and the effect of its application in polluted water
Environmental Technology and Innovation. 2018. V.11. P.74-82. DOI: 10.1016/j.eti.2018.04.010 WOS Scopus РИНЦ

Dates:

Published print:

Aug 1, 2018

Identifiers:

Web of science	WOS:000440618800007
Scopus	2-s2.0-85046749848
Elibrary	35482580
OpenAlex	W2800989548

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