Technology Demonstration on the Extraction Chromatography (EC) of Cesium Ion (Cs⁺) from Acidic High-Level Radioactive Liquid Waste.

ABSTRACT: This study demonstrates the selective separation and recovery of Cs⁺ from high-level radioactive liquid waste (HLW) using 1,3-dioctyloxy-calix[4]arene-18-crown-6-impregnated XAD-7 (CC6/X7) and iso-decyl alcohol (IDA)-modified (CC6-IDA/X7) resins. Both resins were assessed for their adsorption capacity, selectivity, recovery, and reusability. The adsorption capacities of CC6/X7 and CC6-IDA/X7 for Cs⁺ were 56 and 55% from a 4.0 mol·L^-1 HNO₃ solution containing various radioactive and inactive components. CC6-IDA/X7 showed superior recoverability for Cs⁺ (38%) in 0.01 mol·L^-1 of HNO₃ compared to CC6/X7 (15%). Breakthrough and elution of Cs⁺ from CC6-IDA/X7 were evaluated, and reusability was tested over fi

SUBMITTER: Selvakumar J 

PROVIDER: S-EPMC11904681 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature