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Open AccessReview

Recent Advances in Applications of Hybrid Graphene Materials for Metals Removal from Wastewater

1
Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, PO Box 34110, Doha, Qatar
2
Chemical Engineering Program, Texas A&M University at Qatar, POB 23874, Doha, Qatar
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(3), 595; https://doi.org/10.3390/nano10030595 (registering DOI)
Received: 5 February 2020 / Revised: 24 February 2020 / Accepted: 24 February 2020 / Published: 24 March 2020
(This article belongs to the Section Nanocomposite Thin Films and 2D Materials)
The presence of traces of heavy metals in wastewater causes adverse health effects on humans and the ecosystem. Adsorption is a low cost and eco-friendly method for the removal of low concentrations of heavy metals from wastewater streams. Over the past several years, graphene-based materials have been researched as exceptional adsorbents. In this review, the applications of graphene oxide (GO), reduce graphene oxide (rGO), and graphene-based nanocomposites (GNCs) for the removal of various metals are analyzed. Firstly, the common synthesis routes for GO, rGO, and GNCs are discussed. Secondly, the available literature on the adsorption of heavy metals including arsenic, lead, cadmium, nickel, mercury, chromium and copper using graphene-based materials are reviewed and analyzed. The adsorption isotherms, kinetics, capacity, and removal efficiency for each metal on different graphene materials, as well as the effects of the synthesis method and the adsorption process conditions on the recyclability of the graphene materials, are discussed. Finally, future perspectives and trends in the field are also highlighted. View Full-Text
Keywords: graphene nanocomposites; heavy metals; adsorption; regeneration graphene nanocomposites; heavy metals; adsorption; regeneration
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MDPI and ACS Style

Abu-Nada, A.; McKay, G.; Abdala, A. Recent Advances in Applications of Hybrid Graphene Materials for Metals Removal from Wastewater. Nanomaterials 2020, 10, 595.

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