Construction of immobilization process of heavy metals contaminated soils by magnesium oxide

2018 Fiscal Year Final Research Report

• Project/Area Number: 16H04615
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Earth system and resources engineering
• Research Institution: Yamaguchi University
• Principal Investigator: Niinae Masakazu 山口大学, 大学院創成科学研究科, 教授 (50228128)
• Research Collaborator: Suzuki Tasuma
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: 汚染土壌 / 不溶化 / 長期安定性 / 重金属類 / 酸化マグネシウム

Outline of Final Research Achievements

A systematic study was conducted on the immobilization of heavy metals contaminated soils with magnesium oxide. As a result, it was found that magnesium oxide is very effective for the immobilization of heavy metals and is excellent in long-term stability. From these facts, it has been found that the magnesium oxide is very suitable for immobilization treatment of complex-contaminated soil containing various heavy metals. In addition, regarding selenium, it was found that magnesium oxide alone shows immobilization effect for nature-derived heavy metals contaminated soils.

Free Research Field

循環環境工学

Academic Significance and Societal Importance of the Research Achievements

酸化マグネシウムによる不溶化効果のメカニズム及び長期安定性を定量的に評価、解析できた。これは、長期安定的な重金属類汚染土壌の不溶化処理に有効な技術であることを明らかにしたものであり、社会的にも高い意義のある研究である。