Microstructure of gamma-ray developed polymeric nanocomposite respecting cesium and cobalt removal from aqueous solutions

Synthesis of a low-silica CHA zeolite with exceptional selectivity for radioactive137Cs+

“…9 For instance, the Fukushima nuclear accident in 2011 released approximately 6.3–7.7 × 10 5 TBq (terabecquerels) of radionuclides into the environment, including radioactive iodine ( 131 I), strontium ( 90 Sr), and cesium ( 137 Cs). 137 Cs from nuclear power plant wastewater is of particular concern due to its high yield per fission of U-235 (6.221% ± 0.069), 10 long half-life ( T 1/2 = 30.2 years), 11 high gamma emission (0.6617 MeV), 12 and high water solubility, and it can easily migrate into the biosphere through the Earth's water cycle. Once it enters the human body, irradiation from 137 Cs will start to destroy the cells, resulting in functional defects in the body and even genetic diseases.…”

“…The results showed that the Na-CHA zeolite had exceptional performance in the selective removal and deep removal of 137 Cs + from real nuclear power wastewater, which included high selectivity (the distribution coefficient of K d was as high as 2.26 × 10 5 mL g −1 ), fast adsorption kinetics (ca. 5 min), high capture capacity (442.48 mg g −1 ), and a broad working pH range (4)(5)(6)(7)(8)(9)(10)(11)(12). More importantly, the synthesis was scaled-up to the order of 100 L with readily available raw materials, and the performance of the resultant products was the same as that of the products synthesized at the lab scale.…”