Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
908 0 |
SM ISO690:2012 FRINI-SRASRA, N., SRASRA, Ezzedine. Adsorption of Quinalizarin from Non Aqueous Solution on to Acid Activated Palygorskite
. In: Surface Engineering and Applied Electrochemistry, 2009, nr. 4(45), pp. 306-311. ISSN 1068-3755. |
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Surface Engineering and Applied Electrochemistry | ||||||
Numărul 4(45) / 2009 / ISSN 1068-3755 /ISSNe 1934-8002 | ||||||
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Pag. 306-311 | ||||||
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In this study, the adsorption of quinalizarin by natural and mesoporous acid activated palygorskite has been examinated in order to remove coloured textile dyes from non aqueous solutions. The adsorption of quanilizarin from ethanol solution onto acid activated palygorskite was followed by UV-Visible measurement. The adsorption
capacity was largely improved when the clay was activated by HCl. The high adsorption extents were observed from 2M8h to 2M35h acid treated palygorskite samples. Adsorption isotherms of quinalizarin on acid activated palygorskite were determined and correlated with common isotherm equations such as Langmiur and Freundlich models. It
was found that i/the adsorption isotherm exhibits two plateaus ill no model fit the isotherm data. In order to explain the adsorption behaviour of quinalizarin from ethanol onto palygorskite, the presence of stronger and weaker adsorption sites was suggested and checked by using the modified Langmuir model.
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