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Title: Removal of Trace Amounts of Co-60 from NPP Waste Water Using UV-C Irradiation, TiO{sub 2} and Co-Treat Inorganic Ion Exchange Media - 16025

Abstract

The removal of Co-60 from an aqueous nuclear liquid waste obtained from a BWR NPP was tested using a two-step process. In the first phase the liquid waste was oxidized with ultraviolet irradiation at 254 nm (UV-C irradiation) together with a photo-catalyst, TiO{sub 2} P25 AEROXIDE, to degrade the organic complexing agents present in the solution. During some of the experiments it was noticed that TiO{sub 2} P25 AEROXIDE also removed Co-60 from the solution. In the second phase the UV-C irradiated solution was mixed with inorganic ion exchange media, Co-Treat, to remove the rest of Co-60 from the solution. The effect of pH and contact time with UV-C irradiation were evaluated and both had a noticeable effect on the results. Best results were attained when pH of the initial test solution was lowered to 3.5 ± 0.2 before the UV-C irradiation. From the initial Co-60 activity, 2.2 Bq/ml, the activity decreased to 0.03 ± 0.01 Bq/ml after 24 hours of UV-C irradiation together with the photo-catalyst and mixing with Co-Treat. (authors)

Authors:
 [1];  [2]
  1. University of Helsinki (Finland)
  2. Fortum Power and Heat Oy (Finland)
Publication Date:
Research Org.:
WM Symposia, Inc., PO Box 27646, 85285-7646 Tempe, AZ (United States)
OSTI Identifier:
22837939
Report Number(s):
INIS-US-19-WM-16025
TRN: US19V1132083294
Resource Type:
Conference
Resource Relation:
Conference: WM2016: 42. Annual Waste Management Symposium, Phoenix, AZ (United States), 6-10 Mar 2016; Other Information: Country of input: France; 7 refs.; available online at: http://archive.wmsym.org/2016/index.html
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; BWR TYPE REACTORS; CATALYSTS; CHELATING AGENTS; COBALT 60; ION EXCHANGE; IRRADIATION; MIXING; NUCLEAR POWER PLANTS; RADIOACTIVE WASTE PROCESSING; REMOVAL; SOLUTIONS; TITANIUM OXIDES; TRACE AMOUNTS; ULTRAVIOLET RADIATION; WASTE WATER

Citation Formats

Malinen, Leena, and Maeki, Jussi-Matti. Removal of Trace Amounts of Co-60 from NPP Waste Water Using UV-C Irradiation, TiO{sub 2} and Co-Treat Inorganic Ion Exchange Media - 16025. United States: N. p., 2016. Web.
Malinen, Leena, & Maeki, Jussi-Matti. Removal of Trace Amounts of Co-60 from NPP Waste Water Using UV-C Irradiation, TiO{sub 2} and Co-Treat Inorganic Ion Exchange Media - 16025. United States.
Malinen, Leena, and Maeki, Jussi-Matti. 2016. "Removal of Trace Amounts of Co-60 from NPP Waste Water Using UV-C Irradiation, TiO{sub 2} and Co-Treat Inorganic Ion Exchange Media - 16025". United States.
@article{osti_22837939,
title = {Removal of Trace Amounts of Co-60 from NPP Waste Water Using UV-C Irradiation, TiO{sub 2} and Co-Treat Inorganic Ion Exchange Media - 16025},
author = {Malinen, Leena and Maeki, Jussi-Matti},
abstractNote = {The removal of Co-60 from an aqueous nuclear liquid waste obtained from a BWR NPP was tested using a two-step process. In the first phase the liquid waste was oxidized with ultraviolet irradiation at 254 nm (UV-C irradiation) together with a photo-catalyst, TiO{sub 2} P25 AEROXIDE, to degrade the organic complexing agents present in the solution. During some of the experiments it was noticed that TiO{sub 2} P25 AEROXIDE also removed Co-60 from the solution. In the second phase the UV-C irradiated solution was mixed with inorganic ion exchange media, Co-Treat, to remove the rest of Co-60 from the solution. The effect of pH and contact time with UV-C irradiation were evaluated and both had a noticeable effect on the results. Best results were attained when pH of the initial test solution was lowered to 3.5 ± 0.2 before the UV-C irradiation. From the initial Co-60 activity, 2.2 Bq/ml, the activity decreased to 0.03 ± 0.01 Bq/ml after 24 hours of UV-C irradiation together with the photo-catalyst and mixing with Co-Treat. (authors)},
doi = {},
url = {https://www.osti.gov/biblio/22837939}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {7}
}

Conference:
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