Fauquex, P.-F.Flaschel, E.Do, H. P.Friedli, C.Lerch, P.Renken, A.2006-04-182006-04-182006-04-18198310.1016/0020-708X(83)90048-0https://infoscience.epfl.ch/handle/20.500.14299/229559For the characterization of fluidized bed- and hydraulic transport reactors, two radiotracer techniques have been developed permitting the study of mixing phenomena in flowing liquids as well as in beds of fluidized particulate solids. For labelling the aqueous phase, a 99mTc containing solution obtained by means of a 99Mo isotopic generator has been used. The silica gel employed for fluidization has been activated by thermal neutrons to yield a 24Na tracer derived from its natural sodium content.Reactors (hydraulic-transportisotope tracers for); Isotope indicators (in characterization of liq.-solid fluidized bed and hydraulic transport reactors); Reactors (flowin fluidized bed and hydraulic transportisotope tracers for); Reactors (fluidizsodium 24 tracer reactor; technetium 99m tracer reactor; fluidized bed reactor; hydraulic transport reactortext::journal::journal article::research article