Formerly utilized MED/AEC sites remedial action program : radiological survey of the Building Site 421, United States Watertown Arsenel, Watertown, MA /

Feb. 1980.

Formerly utilized MED/AEC sites remedial action program : radiological survey of the Middlesex municipal landfill, Middlesex, New Jersey /

April 1980.

Formerly utilized MED/AEC sites : remedial action program : radiological survey of the former VITRO Rare Metals Plant, Canonsburg, Pennsylvania.

Issued June 1979.

Formerly utilized MED/AEC sites remedial action program : radiological survey of the Middlesex Sampling Plant, Middlesexl, New Jersey.

"UC-70."

Formerly utilized MED/AEC sites remedial action programs : radiological survey of the Hooker Chemical Company, Niagara Falls, N.Y.

Issued Jan. 1977.

Formerly utilized MED/AEC sites : remedial action program : radiological survey of the former Vitro Rare Metals Plant, Canonsburg, Pennsylvania.

Issued April 1978.

A Background report for the Formerly Utilized Manhattan Engineer District/Atomic Energy Commission Sites Program.

"DOE/EV-0097."

NRC plan for cleanup operations at Three Mile Island Unit 2 /

"NUREG-0698."

Removal of nuclear bomb debris, Strontium 90-Yttrium 90, and Cesium 137-Barium 137 from water with Corps of Engineers mobile water-treating equipment /

Mode of access: Internet.

Layered titanate nanofibers as efficient adsorbents for removal of toxic radioactive and heavy metal ions from water

Titanate nanofibers with two formulas, Na2Ti3O7 and Na1.5H0.5Ti3O7, respectively, exhibit ideal properties for removal of radioactive and heavy metal ions in wastewater, such as Sr2+ , Ba2+ (as substitute of 226Ra2+), and Pb2+ ions. These nanofibers can be fabricated readily by a reaction between titania and caustic soda and have structures in which TiO6 octahedra join each other to form layers with negative charges; the sodium cations exist within the interlayer regions and are exchangeable. They can selectively adsorb the bivalent radioactive ions and heavy metal ions from water through ion exchange process. More importantly, such sorption finally induces considerable deformation of the layer structure, resulting in permanent entrapment of the toxic bivalent cations in the fibers so that the toxic ions can be safely deposited. This study highlights that nanoparticles of inorganic ion exchangers with layered structure are potential materials for efficient removal of the toxic ions from contaminated water.