ELECTROCHEMICAL DESTRUCTION OF RESORCINOL IN A COAXIAL DIAPHRAGM-FREE ELECTROLYSER
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
Kazan National Research Technological University
2.
Kazan National Research Technological University
Kazan, Russian Federation
Kazan, Russian Federation
3.
KNITU
4.
Kazanskiy nacional'nyy issledovatel'skiy tehnologicheskiy universitet
Type:
Article
Pages:
from 103
to 107
Status:
In work
Language:
Russian
Keywords:
RESORCINOL, ALKALINE MEDIUM, ELECTROCHEMICAL DESTRUCTION
Abstract (English):
The processes of indirect oxidation of organic substrates with hydrogen peroxide generated in situ by cathodic reduction of oxygen on various electrodes are promising in the treatment of industrial wastewater from organic toxicants. The method of indirect electrochemical oxidation involves the safe purification of contaminated water, bypassing the stage of oxidizer release in its pure form, due to the participation of active forms of oxygen-containing compounds in the form of intermediates HO˙, HO2˙. Under their influence and electric current, aromatic molecules are destroyed to form simple compounds without precipitation formation. One of these compounds is resorcinol (1,3-dihydroxybenzene), used in medicine, chemical industry and cosmetology. It penetrates into the environment as part of industrial waste. In contact with human skin or mucous membranes, it can cause irritation, and with prolonged exposure, more serious health problems. During electrolysis, active particles (radicals) are constantly generated at the cathode in an alkaline electrolyte solution, while they actively interact with resorcinol molecules and intermediate oxidation products. A decrease in the optical density values in the visible region of the spectrum indicates the destruction of the conjugated system. According to the literature, when oxidized, resorcinol is converted into intermediate carboxylic products. The transformation of molecules is also confirmed by thin-layer chromatography data.
The processes of indirect oxidation of organic substrates with hydrogen peroxide generated in situ by cathodic reduction of oxygen on various electrodes are promising in the treatment of industrial wastewater from organic toxicants. The method of indirect electrochemical oxidation involves the safe purification of contaminated water, bypassing the stage of oxidizer release in its pure form, due to the participation of active forms of oxygen-containing compounds in the form of intermediates HO˙, HO2˙. Under their influence and electric current, aromatic molecules are destroyed to form simple compounds without precipitation formation. One of these compounds is resorcinol (1,3-dihydroxybenzene), used in medicine, chemical industry and cosmetology. It penetrates into the environment as part of industrial waste. In contact with human skin or mucous membranes, it can cause irritation, and with prolonged exposure, more serious health problems. During electrolysis, active particles (radicals) are constantly generated at the cathode in an alkaline electrolyte solution, while they actively interact with resorcinol molecules and intermediate oxidation products. A decrease in the optical density values in the visible region of the spectrum indicates the destruction of the conjugated system. According to the literature, when oxidized, resorcinol is converted into intermediate carboxylic products. The transformation of molecules is also confirmed by thin-layer chromatography data.
Keywords:
RESORCINOL, ALKALINE MEDIUM, ELECTROCHEMICAL DESTRUCTION
RESORCINOL, ALKALINE MEDIUM, ELECTROCHEMICAL DESTRUCTION
