Authors:
S. Tripathi Fuel Reprocessing Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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R. Kannan Fuel Reprocessing Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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P. Dhami Fuel Reprocessing Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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P. Naik Fuel Reprocessing Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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S. Munshi Fuel Reprocessing Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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P. Dey Fuel Reprocessing Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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N. Salvi Bio-organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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S. Chattopadhyay Bio-organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085 India

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Abstract  

The improvement and the refinement of non-viable Rhizopus arrhizus biomass were investigated via immobilization. Immobilization was carried out by using sodium alginate/CaCl2 solution and formaldehyde/HCl cross-linking with dead Rhizopus arrhizus biomass and were used for the sorption of radionuclides from low level effluent wastes. The sodium alginate/CaCl2 immobilized biomass (ratio 1:2) showed about 86% sorption for 241Am activity but due to its soft nature and tendency to undergo distortion in shape, is unsuitable for practical applications. The biomass cross-linked with 15% formaldehyde/0.1 M HCl solution has a relatively high mechanical strength and rigidity. It was showing a sorption of >99% for 241Am activity and has the sorption capacity of ~65 mg/g for americium and uranium. Hence, it can be utilized for the removal of radionuclides from radioactive waste effluents.

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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)