Izvestiya of Saratov University.

Chemistry. Biology. Ecology

ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)
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Language: 
Russian
Heading: 
Chemistry
Article type: 
Article
UDC: 
544.723:547.3
DOI: 
10.18500/1816-9775-2021-21-2-152-158
EDN: 
MAYWZM

Glauconite as a sorbent of 4-nitrophenol

Autors: 
Makhova Tatiana M., Saratov State University
Doronin Sergey Yu., Saratov State University
Abstract: 

The sorption properties of glauconite from Beloozersk deposits (Saratov region) for 4-nitrophenol (4-NF) have been investigated. The effect of glauconite on pH and 4-nitrophenol structure in solution is estimated. It is shown that glauconite increases pH of aqueous environment to 8 and shifts the equilibrium towards the formation of aci-form 4-NF. The conditions of sorption 4-NF by glauconite are established: the sorption time 20 min, the mass of the sorbent (0.50–1.0) g. The isotherm of sorption by 4-NF glauconite has been obtained; its interpretation is given using the Langmuir and Freundlich equations. The main quantitative sorption characteristics of glauconite such as recovery (R = 64%), distribution coefficient (D = 88) and the Langmuir and Freundlich constants for 4-nitrophenol are calculated. These experiments indicate the potential use of the glauconite from Beloozersk deposits (Saratov region) for 4-NP from various waters.

Key words: 
inorganic sorbents
glauconite
sorption
4-nitrophenol
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Received: 
14.01.2021
Accepted: 
08.02.2021
Published: 
30.06.2021