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Saghapour, Y., Aghaie, M., Zare, K.. (1392). Thermodynamic study of lead ion removal by adsorption onto nanographene sheets. , 10(1), 59-67.
Y. Saghapour; M. Aghaie; K. Zare. "Thermodynamic study of lead ion removal by adsorption onto nanographene sheets". , 10, 1, 1392, 59-67.
Saghapour, Y., Aghaie, M., Zare, K.. (1392). 'Thermodynamic study of lead ion removal by adsorption onto nanographene sheets', , 10(1), pp. 59-67.
Saghapour, Y., Aghaie, M., Zare, K.. Thermodynamic study of lead ion removal by adsorption onto nanographene sheets. , 1392; 10(1): 59-67.

Thermodynamic study of lead ion removal by adsorption onto nanographene sheets

Journal of Physical & Theoretical Chemistry
مقاله 7، دوره 10، شماره 1، تیر 2013، صفحه 59-67  XML اصل مقاله (425.26 K)
نوع مقاله: Research Paper
نویسندگان
Y. Saghapour* ؛ M. Aghaie* ؛ K. Zare*
-
چکیده
A batch adsorption study was applied to investigate the adsorption of Pb2+ ions from aqueous solution
by nanographene (nG).The adsorption percentage of Pb2+ions onto nG samples at different initial pH,
contact time (tc), adsorbent dosage (mnG) and temperature (T) were investigated. The results showed
that nG is an excellent adsorbent for Pb2+ions removal from aqueous solutions with an adsorption
percentage of up to 79.8% at initial Pb2+concentration of 20ppm and temperature of 298K.The
experimental data could be well described by the Freundlich and Langmuire isotherm model;
thermodynamic parameters of adsorption process (AG0, AH0, ASo) were also evaluated. The overall
adsorption process was exothermic and spontaneous in nature .The results indicate that Pb2+ions
adsorption onto nG may be chemisorption.
کلیدواژه‌ها
Nanographene؛ Pb2+ions؛ Adsorption؛ Isotherm؛ thermodynamics
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