Continouos-flow leach tests of simulated high-level waste glass in synthetic basalt groundwater

✍ Scribed by Hiroshi Kamizono; Tamio Sagawa; Shingo Tashiro

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 448 KB
• Volume: 9
• Category: Article
• ISSN: 0956-053X
• DOI: 10.1016/0956-053x(89)90079-2

✦ Synopsis

Continuous-flow leach tests have been carried out on simulated high-level waste glass in synthetic Grande Ronde basalt groundwater at 90 °C for up to 180 d. Preliminary results obtained without irradiation are described here as reference data for later comparison with those from future experiments with irradiation. The time-dependence of the concentrations of silicon is traced, and the maximum concentration at the plateau is estimated. It is concluded from the results that, above a linear flow rate of 0.1 cm/d, the normalized leach rates of silicon tend to level off at about 6/lg • cm -' ~ • d ~ which is the maximum value under the present flow conditions.