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- W2520277769 abstract "In this work, gamma–MnO 2 nanostructure was used as a sorbent to remove Zn (II) ion from aqueous solution. The influence of pH, sorption time and Zn (II) ion initial concentration were examined. The results showed that equilibrium adsorption was obtained after 60 minutes with 240 rpm of shaking speed at pH = 4.0. The experimental data were analyzed using five non-linear isotherm models: Langmuir, Freundlich, Sips, Tempkin and Dubinin – Radushkevich. The adsorption capacity (qm) from the Langmuir isotherm model for Zn (II) is founded as 55.23 mg/g. The heat of sorption process and the mean free energy were estimated from Temkin and Dubinin – Redushkevich isotherm models to be less than 8 kj/mol which vividly proved that the adsorption experiment followed a physical process. Kinetic studies have shown that although the adsorption data partially followed pseudo-first-order and pseudo-second-order equation for different time, it was well expressed by pseudo-second-order model." @default.
- W2520277769 created "2016-09-23" @default.
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- W2520277769 date "2016-09-01" @default.
- W2520277769 modified "2023-09-23" @default.
- W2520277769 title "Zinc Adsorption Property of Gamma-MnO<sub>2</sub> Nanostructure: Equilibrium and Kinetic Studies" @default.
- W2520277769 doi "https://doi.org/10.4028/www.scientific.net/kem.708.3" @default.
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