Published 2006 | Version v1
Journal article Metadata-only

Catalytic decomposition of organic anions in alkali radioactive wastes. III. Oxidation of oxalate and glycolate

Creators

  • 1. RAN, Inst. Fizicheskoj Khimii i Ehlektrokhimii im. A.N. Frumkina, Moscow (Russian Federation)

Description

Decomposition of oxalate and glycolate ions in alkali solutions under O3, H2O2, Na2S2O8 effect is investigated by titrimetric and spectrophotometric methods. Dependences of chemical reactions on temperature and concentration are determined. It is shown that H2O2 turns out not effective for oxalate and glycolate decomposition. Interaction of persulfate with glycolate takes part at 50 Deg C and higher and is characterized by the presence of inductive period, which decreases with S2O82- and OH- concentration, temperature increase or in the presence of AgNO3, K4Fe(CN)6. The process involves thermal dissociation of persulfate ions into ion-radicals with following development of chain reaction

Abstract (Russian)

Титриметрическим и спектрофотометрическим методами исследовано разложение оксалат- и гликолят-ионов в щелочных растворах под действием O3, H2O2, Na2S2O8. Определены зависимости кинетики химических реакций от температуры и концентрации. Показано, что H2O2 оказался неэффективным реагентом для разложения оксалата и гликолята. Взаимодействие персульфата с гликолятом протекает при 50 град C и выше и характеризуется наличием индукционного периода, который уменьшается с ростом концентрации S2O82- и OH-, температуры или в присутствии AgNO3, K4Fe(CN)6. Процесс включает термическую диссоциацию персульфат-ионов на ион-радикалы и последующее развитие цепной реакции

Additional details

Additional titles

Original title (Russian)
Каталитическое разложение органических анионов в щелочных радиоактивных отходах. III. Окисление оксалата и гликолята

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
48
Journal Issue
1
Journal Page Range
p. 33-36
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
37060510
Subject category
S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
Descriptors DEI
CHEMICAL REACTION KINETICS; CONCENTRATION RATIO; DECOMPOSITION; GLYCOLS; HYDROGEN PEROXIDE; OXALATES; OXIDATION; OXIDIZERS; OZONE; PERSULFATES; RADIOACTIVE WASTE PROCESSING; RADIOACTIVE WASTES; SODIUM HYDROXIDES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K
Descriptors DEC
ALCOHOLS; ALKALI METAL COMPOUNDS; CARBOXYLIC ACID SALTS; CHEMICAL REACTIONS; DIMENSIONLESS NUMBERS; HYDROGEN COMPOUNDS; HYDROXIDES; HYDROXY COMPOUNDS; KINETICS; MANAGEMENT; MATERIALS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PEROXIDES; PROCESSING; RADIOACTIVE MATERIALS; RADIOACTIVE WASTE MANAGEMENT; REACTION KINETICS; SODIUM COMPOUNDS; SULFUR COMPOUNDS; TEMPERATURE RANGE; WASTE MANAGEMENT; WASTE PROCESSING; WASTES

Optional Information

Notes
9 refs., 2 figs., 4 tabs.