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用模拟高放废物硼硅酸盐玻璃固化体和介质(包括膨润土、凝灰岩、沸石、氧化铁粉、去离子水和模拟地下水)构成模拟处置条件下的9个浸泡体系,研究了在有介质存在条件下,玻璃固化体浸泡后的失重,玻璃体的元素浸出和浸出液的pH值变化;研究了温度和pH对浸出的影响,求出了玻璃、水反应的表观活化能为73.0KJ/mol。对高放废物处置库的回填材料的选择提供了优选方案。
Nine simulated immersion systems were simulated by simulated solid waste borosilicate glass and media (including bentonite, tuff, zeolite, iron oxide powder, deionized water and simulated groundwater) The weight loss of glass solidified body after immersion, the element leaching of vitreous body and the pH value of leachate were studied. The effects of temperature and pH on the leaching were studied. The apparent activation energy of reaction between glass and water was found to be 73.0KJ / mol . The selection of backfill material for HLW disposal provides the best solution.