caa a22 4500 378867539 CHVBK 20180305123401.0 cr unu---uuuuu 161128e20030401xx s 000 0 eng 10.1524/ract.91.4.229.19973 doi (NATIONALLICENCE)gruyter-10.1524/ract.91.4.229.19973 Development of selective cobalt and cesium removal from the evaporator concentrates of the PWR Paks [Elektronische Daten] [Szabolcs Szöke, György Pátzay, László Weiser] At the PWR Paks (Hungary) the diluted radioactive waste water is converted to a concentrate by evaporation and the concentrate is stored in tanks. The most important radionuclides in these solutions are 134Cs, 137Cs and 60Co. In this research we studied granular potassium nickel hexacyanoferrate(II) as a Cs-selective ion-exchanger. Its capacity depended on the preparation method, temperature of pretreatment and age of the ion exchanger. We investigated also the effect of metal ions (Fe2+, Fe3+, Mn2+, Mg2+, Ca2+, Co2+, Ni2+, Cu2+) on the Cs-capacity in the presence of complex forming compounds citrate, oxalate and EDTA. The cesium ion exchange capacity increased with addition of inactive cobalt or nickel salts. Additionally we studied filtration, adsorption and ultrafiltration separation processes for cobalt removal. The results showed that only adsorption by active carbon could be successfully used for the cobalt removal from evaporation concentrates. Experiments were performed both in the laboratory and at the PWR Paks. © 2003 Oldenbourg Wissenschaftsverlag GmbH Laboratory techniques, experiments nationallicence Analytical chemistry nationallicence Inorganic chemistry nationallicence Szöke Szabolcs aut Pátzay György aut Weiser László aut Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/4/2003(2003-04-01), 229-232 0033-8230 91:4/2003<229 2003 91 ract https://doi.org/10.1524/ract.91.4.229.19973 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/ract.91.4.229.19973 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Szöke Szabolcs aut NATIONALLICENCE 700 1- Pátzay György aut NATIONALLICENCE 700 1- Weiser László aut NATIONALLICENCE 773 0- Radiochimica Acta/International journal for chemical aspects of nuclear science and technology Oldenbourg Wissenschaftsverlag GmbH 91/4/2003(2003-04-01), 229-232 0033-8230 91:4/2003<229 2003 91 ract CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter