PMID- 531258 OWN - NLM STAT- MEDLINE DCOM- 19800425 LR - 20190918 IS - 0033-8303 (Print) IS - 0033-8303 (Linking) VI - 28 IP - 6 DP - 1979 Jun TI - [Study on decontamination of radioactive ruthenium by steel wool in waste solution (author's transl)]. PG - 361-6 AB - Tracer experiments were done in order to establish a decontamination process of 106Ru in radioactive waste solution by column method paying special attention on the solution of nitratonitrosyl complex of Ru which is often encountered as a low level radioactive waste solution. It turned out that metallic iron was the most effective decontaminating agent among the several tens of materials tested. The decontamination factor (DF) of 106Ru increased in proportion to the total surface area of iron and it sensitively depended on the oxidation state of the surface as revealed by the batchwise and columnwise tests. Iron samples with high corrosiveness gave a much larger DF than those with low corrosiveness. The decontamination process proceeded as iron was being oxidized via Fe(metal)leads toFe(II)leads toFe(III). As the results, the DF initially increased after initiating the passage of water through the column but it then decreased as the oxidation process became inactive. An excellent durability up to 10000 bed volumes was demonstrated by the column method at a high average DF of 150. FAU - Sugimoto, S AU - Sugimoto S FAU - Sakaki, T AU - Sakaki T LA - jpn PT - English Abstract PT - Journal Article PL - Japan TA - Radioisotopes JT - Radioisotopes JID - 20010290R RN - 0 (Alloys) RN - 0 (Radioactive Waste) RN - 0 (Radioisotopes) RN - 0 (Sewage) RN - 12597-69-2 (Steel) RN - 7UI0TKC3U5 (Ruthenium) SB - IM MH - *Alloys MH - Decontamination/*methods MH - Radioactive Waste/*prevention & control MH - *Radioisotopes MH - *Ruthenium MH - *Sewage MH - *Steel MH - *Waste Disposal, Fluid EDAT- 1979/06/01 00:00 MHDA- 1979/06/01 00:01 CRDT- 1979/06/01 00:00 PHST- 1979/06/01 00:00 [pubmed] PHST- 1979/06/01 00:01 [medline] PHST- 1979/06/01 00:00 [entrez] AID - 10.3769/radioisotopes.28.6_361 [doi] PST - ppublish SO - Radioisotopes. 1979 Jun;28(6):361-6. doi: 10.3769/radioisotopes.28.6_361.