ARTICLE DOWNLOAD

Construction of sodium dodecyl sulfate-modified graphene sheets with enhanced adsorption performance for Fe(III) and Al(III) removal

10$
ARTICLE DOWNLOAD

Construction of sodium dodecyl sulfate-modified graphene sheets with enhanced adsorption performance for Fe(III) and Al(III) removal

10$

A. Kito, Y. Z. Hui & Z. A. S. Bairq 

Abstract

In this work, graphene modified with sodium dodecyl sulfate was used to remove Fe (III) and Al (III) from wastewater. Morphological and spectrophotometrical characterization was done to confirm synthesis. Modified graphene performance was studied; pH effect, time of maximal sorption, maximal concentration of absorbent and concentration of ions were studied, as well. Sorption kinetic studies and isotherm models were applied to know the sorption process spontaneity and carried out to evaluate theoretical characteristic rates and possible adsorption mechanisms. Scanning electron microscopy, transmission electron microscopy, and X-ray diffraction studies revealed that graphene surface was successfully modified with sodium dodecyl sulfate, which also was confirmed by Fourier transform infrared spectroscopy. Optimal pH for removal of Al (III) and Fe (III) was 8. The time of maximal adsorption for both ions was 120 min, and the best dose of graphene modified with sodium dodecyl sulfate for their sorption was 0.1 g/L values for Fe (III) and Al (III), indicating that adsorption was favorable. 1/n values revealed cooperative adsorption. The model of adsorption of Fe (III) and Al (III) fits better to Langmuir than the Freundlich model. It was found that graphene modified with sodium dodecyl sulfate sorption’s kinetic model fits with pseudo-second order for Al (III) and Fe (III).

Only units of this product remain
Year 2020
Language English
Format PDF
DOI 10.1007/s13762-020-02715-y