The effects of the glass surface area/solution volume ratio on glass corrosion: A critical review
The effects of the glass surface area/solution volume ratio on glass corrosion: A critical review
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玻璃表面积/溶液体积比对玻璃腐蚀的影响：批判性评论
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
W. Ebert
中科院分区：
文献类型：
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作者：
W. Ebert
本报告回顾并总结了目前关于玻璃表面积/溶液体积（SA/V）比对硼硅酸盐废玻璃腐蚀行为影响的知识状况。SA/V比通过稀释从玻璃释放到浸出液溶液中的腐蚀产物的程度来影响玻璃腐蚀速率：在低SA/V比下进行的测试中，玻璃腐蚀产物比在高SA/V比下进行的测试中稀释得更多。在不同SA/V比下进行的测试中产生的溶液化学性质的差异影响观察到的玻璃腐蚀行为。因此，影响溶液化学性质的任何测试参数也将影响玻璃腐蚀速率。静态浸出测试进行评估的SA/V的影响的结果进行了讨论方面的SA/V的溶液化学的影响。试验结果表明，在长期玻璃腐蚀行为方面仍存在几个问题：SA/V比是否可用作加速参数，以表征与长处理时间相关的玻璃腐蚀的高级阶段;在不同SA/V下进行的试验中，以及在用单片和破碎玻璃样品进行的试验中，玻璃表面的变化是否相同; SA/V和玻璃腐蚀程度对释放的放射性核素的处置有何影响？这些问题将影响废弃玻璃在储存过程中的长期性能预测。在ANL进行的实验计划，以解决这些和其他遗留问题的SA/V对玻璃腐蚀的影响的结果进行了说明。参考文献288篇，图59，16个选项卡。
This report reviews and summarizes the present state of knowledge regarding the effects of the glass surface area/solution volume (SA/V) ratio on the corrosion behavior of borosilicate waste glasses. The SA/V ratio affects the rate of glass corrosion through the extent of dilution of corrosion products released from the glass into the leachate solution: glass corrosion products are diluted more in tests conducted at low SA/V ratios than they are in tests conducted at high SA/V ratios. Differences in the solution chemistries generated in tests conducted at different SA/V ratios then affect the observed glass corrosion behavior. Therefore, any testing parameter that affects the solution chemistry will also affect the glass corrosion rate. The results of static leach tests conducted to assess the effects of the SA/V are discussed with regard to the effects of SA/V on the solution chemistry. Test results show several remaining issues with regard to the long-term glass corrosion behavior: can the SA/V ratio be used as an accelerating parameter to characterize the advanced stages of glass corrosion relevant to long disposal times; is the alteration of the glass surface the same in tests conducted at different SA/V, and in tests conducted with monolithic and crushed glass samples; what are the effects of the SA/V and the extent of glass corrosion on the disposition of released radionuclides? These issues will bear on the prediction of the long-term performance of waste glasses during storage. The results of an experimental program conducted at ANL to address these and other remaining issues regarding the effects of SA/V on glass corrosion are described. 288 refs., 59 figs., 16 tabs.