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Modeling Ion-Exchange for Cesium Removal from Alkaline Radioactive Waste Solutions

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The performance of spherical Resorcinol-Formaldehyde ion-exchange resin for treatment of radioactive waste solutions is investigated through computer modeling. Results show that ion-exchange is an efficient method for cesium removal from highly alkaline radioactive waste solutions. On average, two 1300 liter columns operating in series are able to treat 690,000 liters of waste with an initial cesium concentration of 0.09 mM in 11 days achieving a decontamination factor of over 50,000. The study investigated the sensitivity of ion-exchange column performance to variations in flow, temperature, and column dimensions. Modeling results can be used to optimize the design of the ion exchange system.
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Keywords: Cesium removal; ion-exchange; process modeling; radioactive waste

Document Type: Research Article

Affiliations: 1: Savannah River National Laboratory, Aiken, SC 2: CH2M-HILL Hanford Group, Inc., Richland, WA

Publication date: 2009-01-01

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