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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Aosai, Daisuke Yamamoto, Yuhei Mizuno, Takashi |
| Copyright Year | 2010 |
| Abstract | Chemical state of elements in groundwater is one of the most important information for understanding behavior of elements in underground environment. Chemical state of elements controlled mainly by groundwater physico-chemical parameters. Because the change of physico-chemical parameters of groundwater, due to pressure release and oxidation during sampling, causes changes in chemical state of elements, systematic methodologies for understanding in situ chemical state is required. In this study, in order to understand chemical state of elements in groundwater, an ultrafiltration instrument for maintaining in-situ pressure and anaerobic conditions was developed. The instrument developed in this study for ultrafiltration made of passivated Stainless Used Steel (SUS) materials, was designed to keep groundwater samples maintaining in-situ pressure/anaerobic conditions. Ultrafiltration of groundwater was conducted at a borehole drilled from the 200 mbGL (meters below ground level) Sub-stage at a depth of 200 m at the Mizunami Underground Research Laboratory. Chemical analyses of groundwater were also conducted using samples filtered under both pressurized/anaerobic and atmospheric conditions and passivated SUS materials with different elapsed times after passivation. The results indicate that our ultrafiltration method is suitable for collection of filtered groundwater and passivation is an essential treatment before ultrafiltration. |
| Sponsorship | Nuclear Engineering Division and Environmental Engineering Division |
| Starting Page | 213 |
| Ending Page | 220 |
| Page Count | 8 |
| File Format | |
| ISBN | 9780791854532 |
| DOI | 10.1115/ICEM2010-40074 |
| e-ISBN | 9780791838884 |
| Volume Number | ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, Volume 2 |
| Conference Proceedings | ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management |
| Language | English |
| Publisher Date | 2010-10-03 |
| Publisher Place | Tsukuba, Japan |
| Access Restriction | Subscribed |
| Subject Keyword | Groundwater Ultrafiltration Instrumentation Oxidation Steel Pressure |
| Content Type | Text |
| Resource Type | Article |
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