Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Technetium , immobilization

For the cement stabilization option, a facility would be constmcted to dewater and treat the wastes. There would be a 7- to 21-day staging period of wastes for quality assurance operations. An online rate of 250 days a year was assumed. It is estimated that cement stabilization would result in a volume factor increase roughly 3.75 times the total volume of waste treated. This increase in volume is necessary to immobilize technetium present in the wastes and to achieve a final waste form that could withstand pressures of 500 pounds per square inch (psi). The cement would be placed in 4-ft by 4-ft by 8-ft steel containers that would serve as a mold and to facilitate the handling of the finished blocks (D114432, Appendix A). [Pg.640]

Under reducing conditions, Tc(IV) is the dominant oxidation state because of biotic and abiotic reduction processes. Technetium(IV) is commonly considered to be essentially immobile, because it readily precipitates as low-solubility hydrous oxides and forms strong surface complexes on iron and aluminum oxides and clays. [Pg.4767]

Tagami, K., and Uchida, S. (1996). Microbial role in immobilization of technetium in soil under waterlogged conditions. Chemosphere 33, 217-225. [Pg.562]


See other pages where Technetium , immobilization is mentioned: [Pg.131]    [Pg.95]    [Pg.32]    [Pg.1094]    [Pg.539]    [Pg.121]    [Pg.5]    [Pg.306]    [Pg.320]    [Pg.4204]    [Pg.2823]    [Pg.8]   
See also in sourсe #XX -- [ Pg.538 ]




SEARCH



Technetium

© 2024 chempedia.info