MODELLING OF SORPTION EQUILIBRIUM OF Cr(VI) ON ISOMORPHIC SUBSTITUTED Mg/Zn-Al - TYPE HYDROTALCITES

Content Provider	Semantic Scholar
Author	Cocheci, Laura Iovi, Aurel Pode, Rodica Popovici, Eveline
Copyright Year	2007
Abstract	This paper dealt with Cr(VI) sorption on isomorphic substituted Mg/Zn-Al – type hydrotalcites under proper working conditions. The prepared samples were named Mg3Al, Mg2ZnAl, Mg1.5Zn1.5Al, MgZn2Al and Zn3Al. The experimental data concerning sorption isotherms were modelled in accordance with four equilibrium equations: Langmuir (L), Freundlich (F), LangmuirFreundlich (L-F) and Redlich-Peterson (R-P) by using two ways: (i) estimation of qmax, K and n; and (ii) estimation of K and n, for qmax values equal to the experimental maximum uptake value. It was proved that Langmuir-Freundlich model was the best solution for fitting the experimental data. The results also allowed setting up a ranking order of the sorption capacities for the studied hydrotalcites.
Starting Page	511
Ending Page	515
Page Count	5
File Format	PDF HTM / HTML
DOI	10.30638/eemj.2007.063
Volume Number	6
Alternate Webpage(s)	http://www.eemj.icpm.tuiasi.ro/pdfs/vol6/no6/10_Laura%20Cocheci.pdf
Alternate Webpage(s)	https://doi.org/10.30638/eemj.2007.063
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article