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- W2726911129 abstract "This work aimed at investigating the potential of almond gum as low cost adsorbent for the removal of the cationic dye; malachite green from aqueous solutions. Almond gum was first analyzed by scanning electron microscopy (SEM) and Fourier transforms infrared spectroscopy (FTIR), and then the adsorption behavior was studied in batch system. The effects of the adsorption parameters (adsorbent dose, pH, contact time, particle size, initial dye concentration, temperature and agitation) on the dye removal have been studied. Adsorption equilibrium and isotherms were evaluated depending on temperature using the isotherms of Freundlich, Langmuir, and Tempkin. The obtained result showed that both Langmuir and Freundlich models were adapted to study the dye sorption. The maximum adsorption capacities were equal to 172.41 mg/g, 181.81 mg/g, and 196.07 mg/g at 303.16 K, 313.16 K, and 323.16 K, respectively. The kinetics of sorption were following the pseudo-second order model. The thermodynamic changes in enthalpy (ΔH), entropy (ΔS), and free energy (ΔG) indicated that the adsorption of malachite green at the surface of almond gum is endothermic and occurs spontaneously. Desorption experiments were conducted to regenerate almond gum, showing great desorption capacity when using HCl at pH 2." @default.
- W2726911129 created "2017-07-14" @default.
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- W2726911129 date "2017-12-01" @default.
- W2726911129 modified "2023-10-16" @default.
- W2726911129 title "Adsorptive removal of malachite green from aqueous solutions by almond gum: Kinetic study and equilibrium isotherms" @default.
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- W2726911129 doi "https://doi.org/10.1016/j.ijbiomac.2017.06.106" @default.
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