Study features of quantitative characteristics of organic compounds sorption by metallurgical slag
Journal Title: Інженерні та освітні технології - Year 2018, Vol 6, Issue 3
Abstract
The adsorption of aromatic compounds on a slag sorbent was studied. The effect of the acidity of the solution on the adsorption of weak organic electrolytes is shown. The equations of adsorption are derived. The main types of interaction are determined: dispersion, electrostatic induction and orientational, intermolecular hydrogen bonding, ion pair formation. It is shown that low-molecular aromatic compounds are adsorbed in a nondissociated form. The mineralogical composition of metallurgical slag was researched. The possibility of the using of slags with the main diopside mineral as sorbents for the water purification has been shown. The slag sorption activity is caused by high content of diopside in the amorphous state. The possibility of slag sorption of the organic substances was shown. To increase the degree of loosening the surface, increasing the number of compounds in the amorphous state and increase of adsorption capacity of slag is necessary to conduct its chemical activation. Optimum conditions for chemical slag activation were defined. A presence is hydroxylic and silanolic groups on the surface of slags particles have been shown. The acid activating of slags that increases the amount of adsorption centers OH and Si–OH have been recommended. The large degree of hydratation, hydroxylating and concentration of siloksan groups and groups of Al–O–Si on the surface metallurgical slag on the basis of diopside has been shown. The presence of admixture of aluminum in slags gives the surfaces of silicates properties of chemical sorption in relation to the molecules of donors of electrons.
Authors and Affiliations
Elina Borysivna Khobotova, Inna Valeriivna Hraivoronska
Keywords
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- EP ID EP622505
- DOI 10.30929/2307-9770.2018.06.03.02
- Views 67
- Downloads 0
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