Transport and immobilization of radioactive fallout using artificial macropore -Reducing radiation without surface soil disposal-

2016 Fiscal Year Final Research Report

• Project/Area Number: 26550067
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Modeling and technologies for environmental conservation and remediation
• Research Institution: Okayama University
• Principal Investigator: MORI Yasushi 岡山大学, 環境生命科学研究科, 教授 (80252899)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 放射性物質 / 環境保全 / 放射性セシウム / 浸透現象 / 除染技術

Outline of Final Research Achievements

Fukushima nuclear power plant damaged by the East Japan Great Earthquake caused radioactive fallout around the Tohoku region. Because radioactive fallout was positively charged, it was reported to be adsorbed to soil surface. Surface soil scraper and deep plowing would be, therefore, effective for the removal of radioactive materials. However, these scraped surface soils caused another issue for disposal. Therefore in this research project, artificial macropore which imitated the natural soil pores were installed in agricultural soils to transport the radioactive Cesium to deeper profile and adsorb on the mineral soils. Results showed that elution process by Ammonium Sulfate, transport process by artificial macropore and absorption inhibition process by Potassium Chloride were needed for the effective management in agricultural field.

Free Research Field

土壌環境工学