NDLI: Cyclic tetra[(indolyl)-tetra methyl]-diethane-1,2-diamine (CTet) impregnated hydrous zirconium oxide as a novel hybrid material for enhanced removal of fluoride from water samples

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Cyclic tetra[(indolyl)-tetra methyl]-diethane-1,2-diamine (CTet) impregnated hydrous zirconium oxide as a novel hybrid material for enhanced removal of fluoride from water samples

Content Provider	Semantic Scholar
Author	Rahman, Nafisur Haseen, Uzma Khan, Mohammad Fazeel
Copyright Year	2015
Abstract	A hybrid material was prepared by incorporating cyclic tetra[(indolyl)-tetra methyl]-diethane-1,2-diamine (CTet) into hydrous zirconium oxide (HZO) via thorough mixing of previously prepared CTet in methanol and stirred for 7 h at 27 °C. CTet–HZO was characterized by FT-IR, 13C NMR, XRD, TGA-DTA, SEM coupled with EDX and TEM. The adsorption capacity of fluoride as a function of pH, sorbent dose, contact time, initial concentration of fluoride ions and temperature was examined in batch mode. Maximum fluoride adsorption (188.68 mg g−1) occurred in the pH range 3.5–4.5. The outstanding fluoride sorption property might be ascribed due to the presence of indole-NH groups. The Langmuir, Freundlich and Temkin isotherms were applied to fit the sorption equilibrium data. Based on R2 and average percentage error (APE), the best isotherm model fits follow the order: Freundlich > Temkin > Langmuir. The pseudo-second order kinetic model well fitted the sorption kinetic data which supported the chemisorption as the mechanism of interaction between sorbent and F−. The hybrid material could be reused upto four sorption–desorption cycles with no significant decrease in F− sorption capacity. The material has been applied successfully for the defluoridation of groundwater and river water.
Starting Page	39062
Ending Page	39074
Page Count	13
File Format	PDF HTM / HTML
DOI	10.1039/C5RA01845E
Alternate Webpage(s)	http://www.rsc.org/suppdata/c5/ra/c5ra01845e/c5ra01845e1.pdf
Alternate Webpage(s)	https://doi.org/10.1039/C5RA01845E
Volume Number	5
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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