Treatment of low level radioactive liquid wastes using composite ion-exchange resins based on polyurethane foam

S. Rao; R. Lekshmi; A. Mani; P. Sinha

doi:10.1007/s10967-009-0377-z

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 283: Issue 2

Treatment of low level radioactive liquid wastes using composite ion-exchange resins based on polyurethane foam

Authors:

S. Rao

S. Rao BARC (F) Centralised Waste Management Facility Kalpakkam 603 102 India

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R. Lekshmi

R. Lekshmi BARC (F) Centralised Waste Management Facility Kalpakkam 603 102 India

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A. Mani

A. Mani BARC (F) Centralised Waste Management Facility Kalpakkam 603 102 India

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P. Sinha

P. Sinha BARC (F) Centralised Waste Management Facility Kalpakkam 603 102 India

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Pages:: 379–384

Online Publication Date:: 11 Nov 2009

Publication Date:: 01 Feb 2010

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-009-0377-z

Keywords:: Polyurethane foam; Cesium; Strontium; Polyvinyl acetate

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Abstract

Composite ion-exchange resins were prepared by coating copper-ferrocyanide (CFC) and hydrous manganese oxide (HMO) powders on polyurethane (PU) foam. Polyvinyl acetate/Acetone was used as a binder. The foam was loaded with about five times its weight with CFC and HMO powders. The distribution coefficients of CFC-PU foam and HMO-PU foam for cesium and strontium respectively were estimated. Under similar conditions the HMO-PU foam showed higher capacity as well as better kinetics for removal of strontium than CFC-PU foam for Cs. The pilot plant scale studies were conducted using a mixed composite ion-exchange resin bed. About 1000 bed volumes could be passed before attaining a DF of 10 from an initial value of 60–80. The spent resin was digested in alkaline KMnO₄ and the digested liquid was fixed in cement matrix. The matrices were characterized with respect to compressive strength and leach resistance.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)