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Resolution of TBP-H/sub 2/MBP-HDBP-H/sub 3/PO/sub 4/. Application to UO/sub 2/(NO/sub 3/)/sub 2/-TBP, Th(NO/sub 3/)/sub 4/-TBP, and ZrO(NO/sub 3/)/sub 2/-TBP systems. [Separation of dibutyl phosphoric acid, monobutylphosphoric acid and orthophosphoric acid from tri-butylphosphate]

Abstract

Several schemes for the separation of dibutylphosphoric acid (HDBP), monobutylphosphoric acid (H/sub 2/MBP) and orthophosphoric acid (H/sub 3/PO/sub 4/) as hydrolytic and radiolytic degradation products from tri-n-butylphosphate (TBP) were studied. For the resolution of a HDBP, H/sub 2/MPB and H/sub 3/PO/sub 4/ mixture in TBP-diluent, or in TBP-diluent-heavy metal nitrate (U-VI, Th-IV or Zr-IV), techniques such as ion exchange chromatography, ion chromatography and separation onto a chromatographic alumina column were investigated. For the identification, determination and analytical resolution following up for the several systems studied, techniques such as refraction index measurement, electrical conductivity measurement, molecular spectrophotometry and gas chromatography were applied. Special emphasis was given to the separation using alumina column where the HDBP acid was retained and eluted selectively for its separation from TBP-varsol-uranyl nitrate mixtures. This analytical procedure was applied to the samples coming from the Uranium Purification Pilot Plant in operation at the Centro de Engenharia Quimica (IPEN).
Publication Date:
Apr 01, 1981
Product Type:
Conference
Report Number:
IPEN-Pub-19; CONF-8010269-3
Reference Number:
ERA-07-047508; NTS-82-009881; EDB-82-128622
Resource Relation:
Conference: 21. Brazilian congress of chemistry, Porto Alegre, Brazil, 21 Oct 1980; Other Information: Portions of document are illegible
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; PHOSPHORIC ACID; CHROMATOGRAPHY; ION EXCHANGE CHROMATOGRAPHY; PHOSPHORIC ACID ESTERS; TBP; RADIOLYSIS; THORIUM NITRATES; URANYL NITRATES; ZIRCONIUM NITRATES; ALUMINIUM OXIDES; ELECTRIC CONDUCTIVITY; ELUTRIATION; GAS CHROMATOGRAPHY; MASS SPECTROSCOPY; REFRACTIVITY; SEPARATION PROCESSES; ACTINIDE COMPOUNDS; ALUMINIUM COMPOUNDS; BUTYL PHOSPHATES; CHALCOGENIDES; CHEMICAL RADIATION EFFECTS; CHEMICAL REACTIONS; CHEMISTRY; DECOMPOSITION; ELECTRICAL PROPERTIES; ESTERS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; NITRATES; NITROGEN COMPOUNDS; OPTICAL PROPERTIES; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RADIATION CHEMISTRY; RADIATION EFFECTS; SPECTROSCOPY; THORIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; URANIUM COMPOUNDS; URANYL COMPOUNDS; ZIRCONIUM COMPOUNDS; 400105* - Separation Procedures; 050800 - Nuclear Fuels- Spent Fuels Reprocessing
OSTI ID:
8295298
Research Organizations:
Instituto de Pesquisas Energeticas e Nucleares, Sao Paulo (Brazil)
Country of Origin:
Brazil
Language:
Portuguese
Other Identifying Numbers:
Other: ON: DE82902873
Availability:
NTIS (US Sales Only), PC A02/MF A01.
Submitting Site:
HEDB
Size:
Pages: 13
Announcement Date:
Mar 14, 2013

Citation Formats

Pires, M A.F., and Abrao, A. Resolution of TBP-H/sub 2/MBP-HDBP-H/sub 3/PO/sub 4/. Application to UO/sub 2/(NO/sub 3/)/sub 2/-TBP, Th(NO/sub 3/)/sub 4/-TBP, and ZrO(NO/sub 3/)/sub 2/-TBP systems. [Separation of dibutyl phosphoric acid, monobutylphosphoric acid and orthophosphoric acid from tri-butylphosphate]. Brazil: N. p., 1981. Web.
Pires, M A.F., & Abrao, A. Resolution of TBP-H/sub 2/MBP-HDBP-H/sub 3/PO/sub 4/. Application to UO/sub 2/(NO/sub 3/)/sub 2/-TBP, Th(NO/sub 3/)/sub 4/-TBP, and ZrO(NO/sub 3/)/sub 2/-TBP systems. [Separation of dibutyl phosphoric acid, monobutylphosphoric acid and orthophosphoric acid from tri-butylphosphate]. Brazil.
Pires, M A.F., and Abrao, A. 1981. "Resolution of TBP-H/sub 2/MBP-HDBP-H/sub 3/PO/sub 4/. Application to UO/sub 2/(NO/sub 3/)/sub 2/-TBP, Th(NO/sub 3/)/sub 4/-TBP, and ZrO(NO/sub 3/)/sub 2/-TBP systems. [Separation of dibutyl phosphoric acid, monobutylphosphoric acid and orthophosphoric acid from tri-butylphosphate]." Brazil.
@misc{etde_8295298,
title = {Resolution of TBP-H/sub 2/MBP-HDBP-H/sub 3/PO/sub 4/. Application to UO/sub 2/(NO/sub 3/)/sub 2/-TBP, Th(NO/sub 3/)/sub 4/-TBP, and ZrO(NO/sub 3/)/sub 2/-TBP systems. [Separation of dibutyl phosphoric acid, monobutylphosphoric acid and orthophosphoric acid from tri-butylphosphate]}
author = {Pires, M A.F., and Abrao, A}
abstractNote = {Several schemes for the separation of dibutylphosphoric acid (HDBP), monobutylphosphoric acid (H/sub 2/MBP) and orthophosphoric acid (H/sub 3/PO/sub 4/) as hydrolytic and radiolytic degradation products from tri-n-butylphosphate (TBP) were studied. For the resolution of a HDBP, H/sub 2/MPB and H/sub 3/PO/sub 4/ mixture in TBP-diluent, or in TBP-diluent-heavy metal nitrate (U-VI, Th-IV or Zr-IV), techniques such as ion exchange chromatography, ion chromatography and separation onto a chromatographic alumina column were investigated. For the identification, determination and analytical resolution following up for the several systems studied, techniques such as refraction index measurement, electrical conductivity measurement, molecular spectrophotometry and gas chromatography were applied. Special emphasis was given to the separation using alumina column where the HDBP acid was retained and eluted selectively for its separation from TBP-varsol-uranyl nitrate mixtures. This analytical procedure was applied to the samples coming from the Uranium Purification Pilot Plant in operation at the Centro de Engenharia Quimica (IPEN).}
place = {Brazil}
year = {1981}
month = {Apr}
}