Studies on the solvent extraction of technetium from thiocyanate solutions in mineral acids

Contaminated nickel scrap processing

“…As indicated by Konno and Hidaka (1989) Tc also forms complexes with a variety of other ligands, including halides. Other extractants reported effective include: 5-(4-pyridyl)nonane (Ejaz and Mamoon 1988); polyurethane foam with a cyclic polyether (Caletka, Hausbeck, and Krivan 1986); tri-nocylamine (Gorski, Gruendig, and Richter 1984;Gorski, Richter and Hennrich 1982); 2hexylpyridine (Hanif, Hasany, and Ejaz 1977); tricaprylmethylammonium nitrate (Horowitz and Delphin 1979); and a novel biphasic polyethylene glycol system (Chaiko, Vojta, and Takeuchi 1993).…”