Experimental and modeling investigations of cesium and strontium adsorption onto clay of radioactive waste disposal

Enhanced Sorption of Radionuclides by Defect-Rich Graphene Oxide

“… 1 − 3 The processing of radioactive waste aims at converting it into forms convenient for long-term storage or permanent disposal. Many sorbent materials have been studied for the capture of radionuclides including zeolites, 4 , 5 cement-based materials, 6 , 7 clays, 8 − 11 and carbon materials. 12 − 15 GO as a true 2D material has a high theoretical specific surface area, which is important for efficient sorbent materials.…”

“…Graphene oxide (GO) has been considered as an extremely promising material for treatment of radioactive waste and contaminated natural waters due to its high capacity in sorption of radionuclides. − The processing of radioactive waste aims at converting it into forms convenient for long-term storage or permanent disposal. Many sorbent materials have been studied for the capture of radionuclides including zeolites, , cement-based materials, , clays, − and carbon materials. − GO as a true 2D material has a high theoretical specific surface area, which is important for efficient sorbent materials . GO can be easily dispersed in water, exhibiting an experimental surface area determined by sorption of various molecules on the level of 700–800 m 2 /g , with the theoretical surface value as high as 2600 m 2 /g for a single layered sheet .…”

New insights into the mechanism of graphene oxide and radionuclide interaction

“…The processing of the radioactive waste aims at reducing their volume and converting them into forms convenient for long-term disposal [3]. To solve this problem different sorbent materials have been studied [4,5], including zeolites [6][7][8], cement-based materials [8,9], clays [10][11][12], carbon materials [13][14][15][16][17][18] etc. Special attention was given more recently to promising carbon nanomaterials and especially to graphene oxide (GO).…”

Zwitterionic-surfactant modified LAPONITE®s for removal of ions (Cs+, Sr2+ and Co2+) from aqueous solutions as a sustainable recovery method for radionuclides from aqueous wastes

“…5,6 Several materials and processes have been tested in order to adsorb radionuclides, such as zeolites, 7,8 oxides, 9 membranes, 10 or clay-based adsorbents. [11][12][13] Clay minerals are among the most abundant and cheapest materials, and they are especially recognized for the adsorption of cationic contaminants given their cation exchange capacity (CEC). 5,14,15 This structural property, associated with a very low hydraulic conductivity, 16,17 results in the promotion of this material for the long-term geological storage of high-level radioactive wastes.…”