Iodine Capture with Mechanically Robust Heat-Treated Ag-Al-Si-O Xerogel Sorbents.

ABSTRACT: Various radionuclides are released as gases during reprocessing of used nuclear fuel or during nuclear accidents including iodine-129 (¹²⁹I) and iodine-131 (¹³¹I). These isotopes are of particular concern to the environment and human health as they are environmentally mobile and can cause thyroid cancer. In this work, silver-loaded heat-treated aluminosilicate xerogels (Ag-HTX) were evaluated as sorbents for iodine [I_2(g)] capture. After synthesis of the base NaAlSiO₄ xerogel, a heat-treatment step was performed to help increase the mechanical integrity of the NaAlSiO₄ gels (Na-HTX) prior to Ag-exchanging to create Ag-HTX xerogels. Samples were characterized by powder X-ray diffraction, scanning electron microscopy, energy-dispersive X

SUBMITTER: Chong S 

PROVIDER: S-EPMC8153970 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature