| Project/Area Number |
23360202
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geotechnical engineering
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YONEDA Tetsuro 北海道大学, 大学院・工学研究院, 客員教授 (00002056)
KAWASAKI Satoru 北海道大学, 大学院・工学研究院, 准教授 (00304022)
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| Co-Investigator(Renkei-kenkyūsha) |
TAMOTO Shuichi 独立行政法人土木研究所, 寒地土木研究所 (60414231)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2011: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
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| Keywords | 環境技術 / 地盤工学 / 土壌圏現象 / 地下水 / 固液相反応 / 溶出 / 不溶化 / 吸着 / 試験 / ヒ素 / セレン / 掘削ずり / 原位置カラム / 自然由来重金属 |
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| Research Abstract |
Batch and column leaching experiments using mudstone samples were conducted to understand the leaching processes and mechanisms of arsenic, selenium, and boron. The results showed that two leaching mechanisms, consisting of a rapid leaching related to easily leachable fraction and a slower leaching related to pyrite oxidation, controlled the phenomena. The results of both batch and column leaching experiments can be explained by the two fractions.
Batch and column adsorption experiments for the leached arsenic, selenium, and boron were carried out to elucidate the adsorption processes. The results showed that the leached arsenic, selenium, and boron were adsorbed by not only artificial adsorbents but also natural adsorbents like volcanic ashes when the pH did not change dramatically.
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