Published January 2001 | Version v1
Journal article Metadata-only

A dilute chemical decontaminant formulation containing gallic acid as a reductant

Creators

  • 1. Bhabha Atomic Research Centre, Bombay (India). Applied Chemistry Div.
  • 2. Water and Steam Chemistry Lab., Kalpakkam (India)
  • 3. Eskom, Johannesburg (South Africa)

Description

Gallic acid (GA) was tried as a reductant in place of ascorbic acid in dilute chemical decontaminant (DCD) formulations. Dissolution of magnetite in GA based DCD formulations was studied at 50 C as well as 80 C. It was found to be a good substitute for ascorbic acid in EDTA/ascorbic acid/citric acid, i.e., EAC formulation. The efficiency of EDTA/GA/CA formulation was as good as that of EAC formulation. 2.8 was found to be the optimum pH for this formulation and dissolution decreased at lower as well as higher pHs. The ion exchange behaviour of GA is also appropriate for using it in a regenerating type of formulation. Being an aromatic compound, Gallic acid has inherent stability against radiation degradation. (orig.)

Additional details

Publishing Information

Journal Title
Power Plant Chemistry
Journal Volume
3
Journal Issue
1
Journal Page Range
p. 18-20
ISSN
1438-5325

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
32018898
Subject category
S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Descriptors DEI
CARBON STEELS; CITRIC ACID; CORROSION; DECONTAMINATION; EDTA; GALLIC ACID; MAGNETITE; PERFORMANCE; PHWR TYPE REACTORS; PHYSICAL RADIATION EFFECTS; PRIMARY COOLANT CIRCUITS; PROTECTIVE COATINGS; REACTOR COMPONENTS; TEMPERATURE DEPENDENCE
Descriptors DEC
ALLOYS; AMINO ACIDS; CARBON ADDITIONS; CARBOXYLIC ACIDS; CHELATING AGENTS; CHEMICAL REACTIONS; CLEANING; COATINGS; COOLING SYSTEMS; ENERGY SYSTEMS; HEAVY WATER COOLED REACTORS; HEAVY WATER MODERATED REACTORS; HYDROXY ACIDS; IRON ALLOYS; IRON BASE ALLOYS; IRON ORES; MINERALS; ORES; ORGANIC ACIDS; ORGANIC COMPOUNDS; OXIDE MINERALS; RADIATION EFFECTS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; STEELS; TRANSITION ELEMENT ALLOYS