Adsorption behavior of Fe (III) in aqueous solution on melamine

Water Science and Technology : a Journal of the International Association on Water Pollution Research
Hao PengBingqing Wang

Abstract

This paper focused on the adsorption behavior of Fe (III) in aqueous solution on melamine. The effects of experimental conditions including dosage of melamine, reaction time and reaction temperature were investigated. The results showed that nearly 99% Fe (III) was adsorbed under the optimal conditions: melamine dosage (mole ratio) at n(C3H6N6)/n(Fe) = 3.5:1, reaction time of 60 min and reaction temperature of 90 °C. The optimal processing factors were obtained from response surface methodology and the effects of processing parameters on the removal efficiency of Fe (III) followed the order: mole ratio (n(C3N6H6):n(Fe)) > reaction temperature > reaction time. The adsorption kinetics behavior was fitted well with the pseudo-second-order model. The thermodynamic study showed that the adsorption process was unspontaneous and endothermic. The value of free energy change and standard enthalpy change disclosed that the mechanism of adsorption onto melamine was physisorption. The results will be useful for further applications of system design in the treatment of practical waste effluents.

References

Jul 26, 2002·Molecular Microbiology·Sangpen ChamnongpolEduardo A Groisman
Mar 16, 2007·Journal of Hazardous Materials·Amany El-SikailyOla Abdelwehab
May 16, 2017·Journal of Hazardous Materials·Mas Iwan KonggidinataDaniel Dianchen Gang
May 26, 2017·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Hao PengChangyuan Tao

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