In situ desalination of a granitic column by the electrokinetic method
In situ desalination of a granitic column by the electrokinetic method
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DOI：
10.1080/15583058.2017.1370509
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发表时间：
2018-01-01
影响因子：
2.4
通讯作者：
Otero, Jorge
中科院分区：
文献类型：
--
作者：
Feijoo, Jorge;Rivas, Teresa;Otero, Jorge
对用于纪念碑的岩石进行脱盐是一种常见的策略，以减少可溶盐结晶过程造成变质的可能性。在过去的几年里，一些实验室研究表明，电动技术的应用允许实现更高的脱盐效率，克服了传统方法的大多数局限性。然而，据我们所知，还没有对这种技术用于花岗岩原位脱盐的有效性进行研究。本研究旨在填补这一空白。原位脱盐干预使用电动方法的结果，在高度污染的盐列。优化脱盐方法以脱盐大型原位结构，尝试建立必要的协议（缓冲系统，灌溉系统，设置等）。以获得与实验室中获得的结果一样满意的结果。结果表明，该方法在总盐提取量和盐提取深度方面具有较高的有效性。处理55天后，柱中阴离子浓度下降80%以上。处理后未检测到对石材的矿物学和美学损害，证实了该方法在花岗岩上原位应用的可靠性。
Desalination of rocks used in monuments is a common strategy to reduce the possibility of deterioration by soluble salt crystallization processes. In the last years, some laboratory studies have demonstrated that the application of electrokinetic techniques allow to achieve higher desalination effectiveness, overcoming most limitations of the traditional methods. However, to our knowledge no studies have been conducted on the effectiveness of this technique for in situ desalination of granite. The present study is aimed at filling this gap. The results of an in situ desalination intervention using electrokinetic methods, on a column highly contaminated with salts are presented. The desalination method was optimized to desalinate large in situ structures, trying to establish the necessary protocols (buffering system, irrigation system, setup, etc.) to obtain results as satisfactory as those obtained in laboratory. The results demonstrated the high effectiveness of this method in terms of total salt extraction and depth of salt extraction. The concentration of anions in the column was decreased by more than 80% after 55 days of treatment. No mineralogical and aesthetic damages on the stone were detected after the treatment, confirming the reliability of this method to be applied in situ on granitic rocks.