Ultrahigh Water Permeance of Reduced Graphene Oxide Membrane for Radioactive Liquid Waste Treatment

被引:8
作者
Xia, Xinming [1 ]
Zhou, Feng [2 ]
Yu, Risheng [1 ]
Cao, Longsheng [2 ]
Chen, Liang [1 ,3 ]
机构
[1] Zhejiang A&F Univ, Dept Opt Engn, Zhejiang Prov Key Lab Carbon Cycling Forest Ecosy, Hangzhou 311300, Peoples R China
[2] Radiat Monitoring Tech Ctr, State Environm Protect Key Lab Radiat Environm Mo, Key Lab Radiat Environm Safety Monitoring Zhejian, Minist Ecol & Environm, Hangzhou 310012, Peoples R China
[3] Ningbo Univ, Sch Phys Sci & Technol, Ningbo 315211, Peoples R China
基金
中国国家自然科学基金;
关键词
reduced graphene oxide; membrane; radioactive liquid waste; nanofiltration; permeance; NANOFILTRATION MEMBRANE; FRAMEWORK MEMBRANES; AQUEOUS-SOLUTIONS; SEPARATION; DEPOSITION; REMOVAL; PERFORMANCE; REDUCTION; FACILE; COBALT;
D O I
10.3390/membranes11110809
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
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 CoCl2, ZnCl2, NiCl2, and radionuclide Co-60 solutions with an ultrahigh water permeance of > 71.9 L m(-2) h(-1) bar(-1). The thickness of the AH-rGO membranes affects the water permeance, as the membrane with a thickness of & AP;250 nm has the highest water permeance of up to 125.1 L m(-2) h(-1) bar(-1) 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 Co2+, Zn2+, and Ni2+. 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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页数:9
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