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Author
Maneja Sánchez, Iván
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Abstract
During this project, the possibility of using reduced graphene oxide for the treatment of wastewater with aromatic pollutants has been explored.
A method has been developed to obtain this compound by means of thermal reductions in an inert atmosphere and in the absence of reductants. Different types of graphene oxides have been characterized and the influence of the reduction conditions (time and temperature) on their chemical properties has been studied.
This reduction has been demonstrated by comparing the C/O ratio of the commercial samples with the reduced ones, as well as their characterization by Raman spectroscopy, IR and qualitative tests.
Different tests have been carried out to obtain a hydrogel that acts as a support for graphene oxide. This avoids complex graphene oxide separation and recovery operations, such as filtration, due to the small particle size of this compound.
Its adsorption on modified hydrogels with two model pollutants, dimethylanthranilate and methylene blue, has been studied by fluorescence and UV-Vis absorption spectroscopy.
The efficiency in the retention of these organic molecules by the hydrogel has been proven, concluding that the adsorption of methylene blue is ten times higher than the one with dimethylanthranilate.
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