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A. S. Gubin, P. T. Sukhanov, A. A. Kushnir
Exraction of phenols from aqueous solutions by magnetic sorbents
modified with humic acids
Abstract
Sorption of phenol,
4-nitrophenol, pentachlorophenol and nonylphenol was studied using a magnetic
sorbent based on Fe3O4 nanoparticles modified with humic
acids isolated from various natural sources (brown coal, peat, chernozem and
sapropel). The properties of the resulting sorbent (specific surface area,
saturation magnetization, content of hydroxyl, carboxyl groups and nitrogen)
were studied. The maximum recoveries of phenol, 4-nitrophenol,
pentachlorophenol and nonylphenol are 61, 68, 89 and 94 %respectively.
Key words: humic acids, magnetic sorbent, phenol, sorption.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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