RadChem 2018

Session

SEP 3

SEP.3

17 May 2018, 10:30

Casino Conference Centre

Conveners

SEP 3

• Martin Straka (UJV Rez, a.s.)
• Boris Andris (VUJE a.s.)

574. Silica-based extractants for metal uptake and their direct conversion to a waste form

Dr Sarah Pepper (University of Sheffield)

17/05/2018, 10:30

Separation Methods, Speciation

Invited

Silica-based materials offer the opportunity for “selective decoration” where a large variety of adduct, ion exchange and chelate forming organic ligands can be attached directly to the surface. With the correct choice of ligand, in combination with high surface functionalisation, it is possible to offer high sorption capacity, fast exchange kinetics and selectivity for a variety of metal...

577. Remediation of Radioiodine from aqueous used nuclear fuel (UNF) waste streams by Lewatit A365 and Purolite S985

Mr Daniel Barton (University of Sheffield)

17/05/2018, 11:00

Separation Methods, Speciation

Verbal

Some nuclear accidents and nuclear fuel treatment (such as reprocessing) can release radioactive iodine isotopes, principally 129I and 131I, into gaseous streams and aqueous solutions. Iodine-131 raises concerns in nuclear accidents due to its high activity and the potential for uptake into the human body but does not pose a long-term disposal risk due to its short half-life (t1/2 = 8.04 d)....

580. Synergy of sequential injection analysis and molecular recognition technology for low-level Sr-90 activity determination

Mrs Ivana Coha (Division for marine and environmental research, Laboratory for radioecology, Ruđer Bošković Institute)

17/05/2018, 11:15

Separation Methods, Speciation

Verbal

The routine monitoring, as a part of radiation protection from radioactive materials released into the environment, is established in many countries worldwide. A radionuclide of particular interest is Sr-90, which is, due to its long half-life, one of the most hazardous radionuclide. As it is pure beta emitter, its isolation prior determination is necessary. In recent years, materials based on...

492. The binding ability of amidoxime ligands with different substituents to uranyl

Chu-Ting Yang (Institute of Nuclear Physics and Chemistry, CAEP)

17/05/2018, 11:30

Separation Methods, Speciation

Verbal

The sequestering of uranium from the ocean is an attractive choice for clean energy due to its vast inventory (about 4.5 billion tons). In this regard, the extractant with high binding affinity to uranyl (UO22+) is desired. In the past few decades, amidoxime (AO) has been screened as the most promising candidate, and various absorption materials bearing this ligand or its derivatives have been...

567. Pre-concentration and selective separation of Ra2+ in the presence of a wide range of concurrent cations using a new developed resin

SOUMAYA KHALFALLAH (SUBATECH)

17/05/2018, 11:45

Separation Methods, Speciation

Verbal

Radium is the daughter nuclide of Naturally Occurring Radioactive Materials (NORM), uranium and thorium, which exists in several isotopes. Accordingly it incites great interest in various fields of application such as: environmental monitoring, analytical and medical uses(Gott et al. 2016). Due to its extensive use (in food products, in heating pads and suppositories, in cosmetics, as a...