Using graphene quantum dots for treating radioactive liquid waste

The use of smart materials, especially the carbon-based nanomaterials, is increasing each day. Among the several carbon-based nanomaterials, graphene quantum dots are one of the most impressive ones, not only by its quantum behavior but due to the adsorption quality conferred by electrostatic intera...

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Bibliographic Details
Published in:Environmental science and pollution research international 2020, Vol.27 (3), p.3508-3512
Main Authors: de Menezes, Frederico Duarte, Alencar, Luciana Magalhães Rebelo, dos Santos, Clenilton Costa, da Silva, Maria Isabel Barbosa, Santos-Oliveira, Ralph
Format: Article
Language:English
Subjects:
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Carbon
Earth and Environmental Science
Ecotoxicology
Electronic devices
Electrostatic properties
Environment
Environmental Chemistry
Environmental Health
Environmental science
Graphene
Graphite
Industrial wastes
Liquid wastes
Nanomaterials
Nanostructures
Nanotechnology
Quantum Dots
Radioactive Waste
Radioactive wastes
Refuse Disposal - methods
Short Research and Discussion Article
Smart materials
Uranium
Waste disposal
Waste Water Technology
Water Management
Water Pollution Control
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Summary:The use of smart materials, especially the carbon-based nanomaterials, is increasing each day. Among the several carbon-based nanomaterials, graphene quantum dots are one of the most impressive ones, not only by its quantum behavior but due to the adsorption quality conferred by electrostatic interactions from the negatively charged groups as the huge surface area (2.630 m2/g). In this study, we developed and tested graphene quantum dots (GQDs) as smart nano-adsorbents of uranium ( 238 U) from the radioactive industry waste. The GQDs were developed in a size range of 160–220 nm using a totally green route. The results showed that the GQDs were capable to adsorb almost 40% of the uranium ( 238 U) in alamine 3366 solution. Also, the results demonstrated that using GQDs treatment-like smart nanomaterials for radioactive waste in a volume reduction of almost 90% is achieved, helping the storage process as the final disposal of this material. We may conclude that GQDs may represent a smart device for the treatment of radioactive waste as an alternative of absorbent in the radioactive industry.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-019-07155-x