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Sorption of phenol, 4-nitrophenol, pentachlorophenol, and nonylphenol is studied using a magnetic sorbent based on Fe3O4 nanoparticles modified with humic acids (HAs) isolated from various natural sources (brown coal, peat, chernozem, and sapropel). The properties of the resulting sorbents, namely, specific surface area, saturation magnetization, and content of hydroxyl and carboxyl groups, as well...
A novel organo-zeolite adduct has been synthesized by sorbing humic acids (HA) onto zeolitic tuff and then heating the resulting complex at 330°C for 1.5h. Desorption tests showed that this procedure effectively immobilized HA on the tuff. The crystal structure of the zeolitic tuff and the chemical structure of HA were not altered during the preparation. Phenol sorption analysis demonstrated that...
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