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Title: Sorptive removal of technetium from alkaline heavy metals sludge filtrate containing nitrate ion

Abstract

A so-called ''raffinate'' waste stream is generated from various uranium recovery and equipment cleaning and decontamination activities at the X-705 facility of the Portsmouth (Ohio) Gaseous Diffusion Plant (PORTS). The composition of this waste stream is generally characterized by high concentrations of nitric acid, toxic heavy metals, and low level of radioactive nuclides (/sup 235/U, /sup 99/Tc). We have found that cross-linked poly-4-vinyl-pyridine (PVP) resin (such as Reillex 402) is more efficient than strongly basic anion exchange resin for removed of Tc in wastes containing high concentrations of nitrate ion, resin loading by nitrate is greatly reduced, and PVP resins are very stable with respect to chemical and radiological degradation. Also the inexpensive inorganic reagents, elemental iron (degreased iron filings, about 40 mesh) and ferrous sulfide (in particular Greigite (Fe/sub 3/S/sub 4/)) are very efficient for the removal of Tc and also soluble mercury from aqueous nitrate wastes. 2 refs., 1 fig., 4 tabs.

Authors:
;
Publication Date:
Research Org.:
Oak Ridge Gaseous Diffusion Plant, TN (USA)
OSTI Identifier:
6956713
Report Number(s):
K/QT-160-P; CONF-880903-2
ON: DE88010156
DOE Contract Number:  
AC05-84OT21400
Resource Type:
Conference
Resource Relation:
Conference: Spectrum '88: international topical meeting on nuclear and hazardous waste management, Pasco, WA, USA, 11 Sep 1988; Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; PORTSMOUTH GASEOUS DIFFUSION PLANT; WASTE WATER; TECHNETIUM; SORPTION; ANIONS; ION EXCHANGE; NITRATES; REMOVAL; SLUDGES; CHARGED PARTICLES; ELEMENTS; GASEOUS DIFFUSION PLANTS; HYDROGEN COMPOUNDS; INDUSTRIAL PLANTS; IONS; ISOTOPE SEPARATION PLANTS; LIQUID WASTES; METALS; NATIONAL ORGANIZATIONS; NITROGEN COMPOUNDS; NUCLEAR FACILITIES; OXYGEN COMPOUNDS; TRANSITION ELEMENTS; US DOE; US ERDA; US ORGANIZATIONS; WASTES; WATER; 400105* - Separation Procedures; 052001 - Nuclear Fuels- Waste Processing

Citation Formats

Bostick, W D, and Evans-Brown, B S. Sorptive removal of technetium from alkaline heavy metals sludge filtrate containing nitrate ion. United States: N. p., 1988. Web.
Bostick, W D, & Evans-Brown, B S. Sorptive removal of technetium from alkaline heavy metals sludge filtrate containing nitrate ion. United States.
Bostick, W D, and Evans-Brown, B S. Fri . "Sorptive removal of technetium from alkaline heavy metals sludge filtrate containing nitrate ion". United States.
@article{osti_6956713,
title = {Sorptive removal of technetium from alkaline heavy metals sludge filtrate containing nitrate ion},
author = {Bostick, W D and Evans-Brown, B S},
abstractNote = {A so-called ''raffinate'' waste stream is generated from various uranium recovery and equipment cleaning and decontamination activities at the X-705 facility of the Portsmouth (Ohio) Gaseous Diffusion Plant (PORTS). The composition of this waste stream is generally characterized by high concentrations of nitric acid, toxic heavy metals, and low level of radioactive nuclides (/sup 235/U, /sup 99/Tc). We have found that cross-linked poly-4-vinyl-pyridine (PVP) resin (such as Reillex 402) is more efficient than strongly basic anion exchange resin for removed of Tc in wastes containing high concentrations of nitrate ion, resin loading by nitrate is greatly reduced, and PVP resins are very stable with respect to chemical and radiological degradation. Also the inexpensive inorganic reagents, elemental iron (degreased iron filings, about 40 mesh) and ferrous sulfide (in particular Greigite (Fe/sub 3/S/sub 4/)) are very efficient for the removal of Tc and also soluble mercury from aqueous nitrate wastes. 2 refs., 1 fig., 4 tabs.},
doi = {},
url = {https://www.osti.gov/biblio/6956713}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1988},
month = {1}
}

Conference:
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