钠-蒙脱石地球化学性能模拟研究 |
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引用本文: | 李娜娜,康明亮,刘月妙,苏锐. 钠-蒙脱石地球化学性能模拟研究[J]. 铀矿地质, 2016, 0(4): 246-250. DOI: 10.3969/j.issn.1000-0658.2016.04.009 |
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作者姓名: | 李娜娜 康明亮 刘月妙 苏锐 |
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作者单位: | 1. 核工业北京地质研究院,中核高放废物地质处置评价技术重点实验室,北京 100029;2. 中山大学,广东 珠海,519082 |
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摘 要: | 膨润土已经被许多国家确定为高放废物深地质处置系统的缓冲/回填材料。钠-蒙脱石作为钠基膨润土的主要矿物,对钠基膨润土的地球化学稳定性能起着关键作用。以地球化学模拟软件PHREEQC和GWB为平台,对内蒙古高庙子膨润土的关键矿物——钠-蒙脱石在无氧和不同温度条件下的地球化学行为进行了模拟研究,分析了钠-蒙脱石在北山地下水体系中矿物成分、液相化学成分、pH值的长期演变规律。
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关 键 词: | 膨润土 钠 蒙脱石 PHREEQC GWB 北山地下水 |
Simulation on Geochemical Evolution of Na-montmorillonite |
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Abstract: | Bentonite has been internationally recognized as buffer and backfill material of high-level radio-active waste (HLW)repository. Na-montmorillonite,as the dominated mineral of Bentonite,plays an important role in geochemical stability of Na-bentonite. In this paper,the geochemical evolution of Na-montmorillonite in Beishan groundwater under anaerobic condition was studied at different temperature by using geochemical software PHREEQC and GWB. The evolution of key parameters,including se-condary minerals,chemical composition and pH of solution,were investigated. |
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Keywords: | bentonite Na-montmorillonite PHREEQC GWB Beishan groundwater |
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