TC-99 REMOVAL FROM PROCESS SOLUTIONS AND CONTAMINATED GROUNDWATER
Delcul, GD; Bostick, WD; Trotter, DR; Osborne, PE
| HERO ID | 1438360 |
|---|---|
| In Press | No |
| Year | 1993 |
| Title | TC-99 REMOVAL FROM PROCESS SOLUTIONS AND CONTAMINATED GROUNDWATER |
| Authors | Delcul, GD; Bostick, WD; Trotter, DR; Osborne, PE |
| Journal | Separation Science and Technology |
| Volume | 28 |
| Issue | 1-3 |
| Page Numbers | 551-564 |
| Abstract | The predominant form of technetium under oxic conditions is the pertechnetate anion (TcO4-), which is highly soluble in water and readily mobile in the environment. Technetium-99 is of particular concern because of its persistence and mobility. Various equipment decontamination and uranium recovery operations at the Portsmouth Gaseous Diffusion Plant generate a ''raffinate'' waste stream characterized by toxic heavy metals, high concentration of nitric acid, and low levels of radionuclides (U-235 and Tc-99). Dilution and adjustment of solution pH to a value of 8.2 to 8.5 precipitates a heavy-metals-sludge and a filtrate. The removal of Tc-99 from these waste streams and from contaminated groundwater can be accomplished using anionic ion-exchange resins. Batch equilibrium and packed column breakthrough and regeneration studies were performed using inorganic sorbents and organic ion-exchange resins (Dowex SRB-OH and Reillex resins). These studies were performed on actual and surrogate raw raffinates, filtrates, and surrogate groundwater samples. The experimental conditions were chosen to closely represent the actual process. |
| Wosid | WOS:A1993KE07400032 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science WOS:A1993KE07400032 |
| Is Public | Yes |