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Rapid separations of corrosion and fission products

I. Selective liquid-liquid extractions with metal diethyldithiocarbramates

Journal of Radioanalytical and Nuclear Chemistry
Authors:
D. Vančo
,
M. Fojtík
,
M. Szlaurová
, and
P. Galan

Abstract  

A separation scheme of a complex mixture of radiohygienically important radionuclides of corrosion and fission products has been worked out. Rapid separation by means of solvent extractions with metal (sodium, antimony, zinc) diethyldithiocarbamates has been achieved. Chloroform containing metal diethyldithiocarbamates has been used as the organic phase. The procedure permits to separate selectively the representative radionuclides. The selectivity of separation was verified by gamma spectrometry.

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Rapid separations of corrosion and fission products

II. Ion exchange separations using A simple semiautomatic equipment

Journal of Radioanalytical and Nuclear Chemistry
Authors:
M. Szlaurová
,
D. Vančo
,
P. Galan
, and
M. Fojtík

Abstract  

The separation procedure for the mixture of radiohygienically important radionuclides using a set of ion exchange columns with inorganic ion exchangers and seminautomatic SA—7100 separation equipment has been elaborated. Conditions required for the selective separation of representative radionuclides of corrosion and fission products are given. Quantitative and selective separation, verified by gamma spectrometry, has been performed in one run within 30 min.

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Abstract  

The effect of -radiation on the aqueous solution of morpholine was studied on the basis of UV spectrum measurement, COD /chemical oxygen demand/, TOC /total organic carbon/ and STOD /short-term oxygen demand/ determination and Pitter's kinetic test of biodegradation. The biodegradability of the model solution after irradiation became substantially worse.

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Abstract  

The effect of -radiation on waste water solutions containing 2-mercaptobenzothiazole and N-oxydiethylene-2-benzothiazolesulfenamide was studied by UV spectrosocopy, COD, BOD5 and TOC determination and Pitter's kinetic test of biodegradation. No improvement in biodegradability of model solutions was detected and in case of 2-mercaptobenzothiazole colloidal turbidity removable by coagulation appeared.

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