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Volume 3, Issue 2 (Suppl) Ind Chem
ISSN: 2469-9764, ICO an open access journa Industrial Chemistry 2017
May 22-23, 2017
May 22-23, 2017 Las Vegas, USA
2nd World Conference on
Industrial Chemistry and Water Treatment
Kinetics and mechanism of sorption of Cr(VI) by nanoparticles of synthetic magnetite
O D Linnikov and I V Rodina
Russian Academy of Sciences, Russia
The results of investigation of kinetics and mechanism of sorption of chrome (VI) by nanoparticles of synthetic magnetite
in a model solution are presented. The model solution contained 400 mg/l of Na2SO4 and 50 mg/l of Cr (VI) (in the form
of potassium chromate). Investigations were carried out at different temperatures and pH of the model solution. Particles of
magnetite had the average diameter 32 nm and the specific surface area 36.3 m2/g evaluated by BET method. It was found
that at sorption of chrome (VI) by magnetite two processes simultaneously proceed: (1) Simple physical adsorption and (2)
Chemical reaction of interaction of Cr(VI) with magnetite (the chemisorption). The parameters of these processes at different
temperatures and initial pH of the model solution were defined. The chemical reaction of interaction of chrome (VI) with
magnetite was described by equation of reaction of the first order related to concentration of Cr(VI) in solution. Established
relations allow evaluating the amount of magnetite for removal of chrome (VI) from polluted natural waters and sewage. For
verification of the established relations additional experiments for cleaning sewage of some enterprise of Sverdlovsk region
(Russia) from Cr(VI) by magnetite were carried out. As a result satisfactory coincidence of experimental and theoretical data
was found.
O D Linnikov et al., Ind Chem 2017, 3:2 (Suppl)