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Xia, Xinming; Zhou, Feng; Yu, Risheng; Cao, Longsheng; Chen, Liang
Membranes, 10/2021, Volume: 11, Issue: 11Journal Article
Membrane methods exhibit great potential for application in radioactive liquid waste treatment. In this work, we prepared a reduced graphene oxide using the amino-hydrothermal method (AH-rGO) that exhibited effective rejection rates of 99.9% for CoCl , ZnCl , NiCl , and radionuclide Co solutions with an ultrahigh water permeance of >71.9 L m h bar . The thickness of the AH-rGO membranes affects the water permeance, as the membrane with a thickness of ≈250 nm has the highest water permeance of up to 125.1 L m h bar with the corresponding rejection rate of 86.8%. Importantly, this is the most permeable membrane with a satisfactory level of the rejection rate for typical radioactive ions of Co , Zn , and Ni . Moreover, the AH-rGO membranes presented excellent stability. These findings demonstrate the potential of reduced graphene oxide (rGO) membranes for radioactive liquid waste treatment.
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