Abstract
Distribution of226Ra within a segmented electrolytic manganese dioxide (EMD) column was investigated under varying flow rates. Tests show uniform distribution of226Ra within the EMD column at higher flow rates, as compared to a lower flow rate whereby an apparent two stage sorption process is contributing to the sorption amount. The sorption of226Ra on EMD decreases from 57% to 14.2% over a short range of Ba2+ concentration (5–30 mg Ba2+ per 750.0 g solution) using flow rates of 200–300 ml min−1. The sorption of226Ra on EMD decreases (58–15%) a consistent higher sorption of226Ra compared to133Ba under all Ra:Ba ratios indicating the preference for Ra2+ ions.
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