Published March 2010 | Version v1
Journal article Metadata-only

The extraction of actinides from nitric acid solutions with diamides of dipicolinic acid

Creators

  • 1. Department of Chemistry, 153 Gilbert Hall, Oregon State University, Corvallis, OR 97331 (United States)
  • 2. Department of Nuclear Engineering and Radiation Health Physics, 100 Radiation Center, Oregon State University, Corvallis, OR 97331 (United States)
  • 3. Khlopin Radium Institute, St-Petersburg (Russian Federation)
  • 4. Idaho National Laboratory, PO Box 1625, Idaho Falls, ID 83415 (United States)

Description

Diamides of dipicolinic acid (N,N'-diethyl-N,N'-ditolyl-dipicolinamide, EtTDPA) were synthesized and evaluated for their extraction capability for actinides. In this work the extractions of neptunium(V), protactinium(V), and thorium(IV) with EtTDPA in a polar fluorinated diluent from nitric acid were investigated. EtTDPA shows a high affinity for Th(IV) even at millimolar concentrations. Np(V) and Pa(V) are both reasonably extractable with EtTDPA; however, near saturated solutions are required to achieve appreciable distribution ratios. A comparison with previously published actinide extraction data is given.

Availability note (English)

Available from http://dx.doi.org/10.1088/1757-899X/9/1/012068

Additional details

Identifiers

DOI
10.1088/1757-899X/9/1/012068;

Publishing Information

Journal Title
IOP Conference Series. Materials Science and Engineering (Online)
Journal Volume
9
Journal Issue
1
Journal Page Range
[10 p.]
ISSN
1757-899X

Conference

Title
8. international conference on actinide science
Acronym
Actinides 2009
Dates
12-17 Jul 2009
Place
San Francisco, CA (United States)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43018946
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
AFFINITY; DISTRIBUTION; EXTRACTION; NEPTUNIUM; NITRIC ACID; PROTACTINIUM; SOLUTIONS; THORIUM
Descriptors DEC
ACTINIDES; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; METALS; MIXTURES; NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; SEPARATION PROCESSES; TRANSURANIUM ELEMENTS