Recent progress in separation of technetium-99 from spent nuclear fuel and radioactive waste. Challenges and prospects
YA Ustynyuk, NI Zhokhova, ZA Sizova… - Coordination Chemistry …, 2024 - Elsevier
The development of methods for the selective binding and separation of pertechnetate anion
from aqueous solutions formed during the reprocessing of spent nuclear fuel remains an …
from aqueous solutions formed during the reprocessing of spent nuclear fuel remains an …
Modification of Portland cement matrix with diethyldithiocarbamate for technetium immobilization
E Abramova, M Volkov, A Novikov, M Grigoriev… - Progress in Nuclear …, 2025 - Elsevier
The paper considers the effect of sodium diethyldithiocarbamate (SDDC) addition on the
immobilization of technetium in a Portland cement matrix. The leaching process was …
immobilization of technetium in a Portland cement matrix. The leaching process was …
Technetium stabilization in low-solubility sulfide phases: A review
Technetium contamination remains a major environmental problem at nuclear reprocessing
sites, eg, the Hanford Site, Washington, USA. At these sites, Tc is present in liquid waste …
sites, eg, the Hanford Site, Washington, USA. At these sites, Tc is present in liquid waste …
Technetium stabilization in Portland cement and bentonite clay barriers by thiourea
In this paper we elaborated the prospective approach for the immobilization of technetium in
bentonite clay and Portland cement. It includes thiourea (Tu) addition for Tc effective …
bentonite clay and Portland cement. It includes thiourea (Tu) addition for Tc effective …
Biogenic factors of radionuclide immobilization on sandy rocks of upper aquifers
AV Safonov, ND Andryushchenko, PV Ivanov… - Radiochemistry, 2019 - Springer
The effect of microorganisms on immobilization of Cs, Sr, U, and Tc on sandy rocks from
upper aquifers was studied. Aquifer water samples taken from observation boreholes in the …
upper aquifers was studied. Aquifer water samples taken from observation boreholes in the …
Oxidation and Mobilization of Tc-99 Reduced Phases by a Mn (III)–Pyrophosphate Aqueous Complex under Anoxic Conditions: Implications for Remediation of a Risk …
J Stanberry, K Morgan, I Russell… - ACS Earth and Space …, 2025 - ACS Publications
The environmental fate of technetium-99 is tied to its oxidation state. Under oxidizing
conditions, Tc-99 predominates as the Tc (VII) O4–anion, which exhibits high solubility and …
conditions, Tc-99 predominates as the Tc (VII) O4–anion, which exhibits high solubility and …
Choline chloride–formic acid mixture as a medium for the reduction of pertechnetates–electrochemical and spectroscopic studies
D Połomski, NA DiBlasi, K Dardenne… - Physical Chemistry …, 2023 - pubs.rsc.org
The physicochemical properties of a choline chloride (ChCl) and formic acid (FA) mixture (1:
2 molar ratio) have been studied over a broad range of temperatures (− 140 to 60° C) …
2 molar ratio) have been studied over a broad range of temperatures (− 140 to 60° C) …
XPS Determination of the Oxidation State of 99Тс Isotope Absorbed on the Surface of Pyrrhotite FenSn+1 and Stibnite Sb2S3
Sorption of pertechnetate on pyrrhotite Fe n S n+ 1 (I) and stibnite Sb2S3 (II) from distilled
water was evaluated. The distribution coefficients were found to be 185 and 223 cm3/g …
water was evaluated. The distribution coefficients were found to be 185 and 223 cm3/g …
Composition of Rhenium Heptasulfide Prepared by Different Methods
NB Egorov, EA Isaeva - Inorganic Materials, 2022 - Springer
Re2S7 samples have been synthesized by thiosulfate, sulfide. and thioacetamide processes
and shown to differ very little in composition. Their composition has been determined by …
and shown to differ very little in composition. Their composition has been determined by …
Imaging of the third gasotransmitter hydrogen sulfide using 99mTc-labeled alpha-hydroxy acids
Abstract Introduction Hydrogen sulfide (H 2 S) defined as the third gasotransmitter after nitric
oxide (NO) and carbon monoxide (CO) is an important mediator of various physiological …
oxide (NO) and carbon monoxide (CO) is an important mediator of various physiological …