Citation
Haron, Md. Jelas and Shafie, Nur Anisah and Yusof, Nor Azah and Kassim, Anuar and Wan Yunus, Wan Md. Zin and Talebi, S. M.
(2009)
Sorption of Cu(II) by chemically grafted hydroxamic acid-zeolite.
The Malaysian Journal of Analytical Sciences, 13 (1).
pp. 52-62.
ISSN 1394-2506
Abstract
Sorption of Cu(II) by zeolite sorbent chemically modified with hydroxamic acid (HASiZP) is described. The maximum sorption capacity of Cu(II) occurred at pH 5. Sorption capacity of Cu(II) by HASiZP was doubled compared to the original zeolite. Kinetic study shows that Cu(II) sorption followed by second order kinetic model. The sorption of Cu(II) followed Langmuir isotherm model with maximum capacity of 33.32 mg/g at 25°C and increased to 48.12 mg/g at 70°C. Cu(II) sorption by the HASiZP was endothermic and spontaneous processes with positive values of entropy changes.
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