Continuous-flow leach tests of simulated high-level waste glass in synthesized groundwater and deionized water.

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概要

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• Simulated high-level waste glass was leached at 70°C for 28 d in one type of synthesized groundwater in Japan and in deionized water. The MCC-4 low-flow-rate leach test method was used for producing continuous-flow leach conditions with flow rates of 0.1, 0.01 and 0.001 m//min. The MCC-1 static leach tests were also carried out for a comparison.<BR>First, the increase of the normalized elemental mass losses (NL) for Si and B was observed for all flow rates studied using synthesized groundwater and for flow rates of more than 0.01 ml/min in deionized water. This was in line with the results of several other previous studies.<BR>Second, in the deionized water, the values of NL by the MCC-1 method were larger than those obtained by the MCC-4 method with flow rates of 0.001 and 0.01 ml/min. Since the deionized water does not have buffer capacity, the pH-value in the MCC-1 leach tests was higher than those in the MCC-4 leach tests with flow rates of 0.001 and 0.01 ml/min, thereby helping the glass to dissolve progressively in the MCC-1 static conditions.

• 一般社団法人 日本原子力学会の論文

著者

• Shimizu Isamu

  Department Of Innovative And Engineering Materials Tokyo Institute Of Technology

• Banba Tsunetaka

  Department Of Environmental Sciences Japan Atomic Energy Research Institute

• KAMIZONO Hiroshi

  Department of Agricultural Chemistry, Kyushu University

• KAMIZONO Hiroshi

  Department of Environmental Safety Research, Tokai Research Establishment, Japan Atomic Energy Research Institute

• SHIMIZU Isamu

  Department of Environmental Safety Research, Tokai Research Establishment, Japan Atomic Energy Research Institute

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