Removal of Arsenic(Ⅴ) using Sugar based Graphene Oxide- Lanthanum Combined with Manganese Ferrite

摘要

In this study, Sugar based Graphene Oxide-Lanthanum Combined with Manganese Ferrite (SGO-La-MF) was applied as an adsorbent for the removal of As(Ⅴ) from wastewater. The physicochemical characterization of SGO-La-MF was analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and X-ray photoelectron spectroscopy (XPS). The effects of dosage, pH, contact time, and concentration on the adsorption of As(Ⅴ) onto SGO-La-MF were studied. The kinetic study demonstrated that the adsorption of As(Ⅴ) onto SGO-La-MF was well fitted to the pseudo-second-order model. The isotherm study showed that the adsorption of As(V) on to SGO-La-MF was suitable to the Langmuir isotherm model. As(Ⅴ) adsorption was determined by the rate-limiting monolayer adsorption on the homogeneous SGO-La-MF surface. The maximum adsorption capacity was 13.004 mg/g of SGO-La-MF at pH 6.0 and 298 K. The SGO-La-MF was found to be a potential adsorbent for the removal of As(Ⅴ) from aqueous solution. This work was supported by the Ministry of Education (2016R1D1A1B03930879) of the Korea