Efficient removal of arsenic using graphene-zeolite based composites

[Display omitted] Removing heavy metals from water can be considered an important problem of global magnitude due to their toxic and carcinogenic properties. The main aim of this presentation was to synthesize different composites of graphene (graphene oxide (GO) or reduced graphene oxide (RGO is re...

Full description

Saved in:
Bibliographic Details
Published in:Journal of colloid and interface science 2017-07, Vol.498, p.433-441
Main Authors: Khatamian, M., Khodakarampoor, N., Saket-Oskoui, M.
Format: Article
Language:English
Subjects:
Arsenic removal
Fe3O4 nanoparticles
Graphene
Graphene based composites
Zeolite A
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] Removing heavy metals from water can be considered an important problem of global magnitude due to their toxic and carcinogenic properties. The main aim of this presentation was to synthesize different composites of graphene (graphene oxide (GO) or reduced graphene oxide (RGO is referred to reduced graphene oxide, which was obtained using solvothermal method)) with Cu-exchanged zeolite A (Cu-ZEA) and nanoparticles of magnetite (Fe3O4) (including Fe3O4/RGO/, GO/Cu-ZEA, Fe3O4/RGO/Cu-ZEA and Fe3O4/GO/Cu-ZEA) for improving the properties of the individual components of mentioned composite and eventually investigate the composites' efficiency in arsenic adsorption. Among prepared composites, Fe3O4/RGO/Cu-ZEA composite had the highest efficiency in removing arsenic according to atomic absorption spectroscopy (AAS) results due to the high specific surface area, which was provided by the presence of Cu-ZEA and Fe3O4 in the structure of composite. Moreover, the adsorption kinetic investigation revealed that the adsorption of arsenate from aqueous suspension of Fe3O4/RGO/Cu-ZEA and Fe3O4/RGO composites followed a pseudo-second-order kinetic model.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2017.03.052