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

• 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
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000); Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2017: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥11,830,000 (Direct Cost: ¥9,100,000、Indirect Cost: ¥2,730,000)
• 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 / 土壌汚染防止 / 地圏環境修復 / 地球・資源システム工学 / 汚染土壌対策 / 水質汚濁・土壌汚染防止・浄化 / 環境対応

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.

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。

Research Products

• [Journal Article] The role of anatase impurity in the leaching of Cd(II) from contaminated kaolinite (2019)
  • Author(s): Tasuma Suzuki、 Kisho Nakase、 Satoshi Kakoyama、 Jyunko Takamuro、 Miyu Okita、 Masakazu Niinae
  • Journal Title: Journal of Environmental Chemical Engineering Volume: 7 Issue: 1 Pages: 102851-102851
  • DOI: 10.1016/j.jece.2018.102851
  • Peer Reviewed / Open Access
• [Journal Article] Immobilization of selenium(VI) in artificially contaminated kaolinite using ferrous ion salt and magnesium oxide (2019)
  • Author(s): Tasuma Suzuki、 Kentaro Sue、 Hiroki Morotomi、 Masakazu Niinae、 Mika Yokoshima、 Hideki Nakata
  • Journal Title: Journal of Environmental Chemical Engineering Volume: 7 Issue: 1 Pages: 102802-102802
  • DOI: 10.1016/j.jece.2018.11.046
  • Peer Reviewed / Open Access
• [Journal Article] ヒドロキサム酸型ジデロフォアが共存する条件下における鉛およびカドミウムのカオリナイトへの収着特性と酸化マグネシウムによる不溶化処理 (2018)
  • Author(s): 鈴木 祐麻、加古山 怜、渕上 水葵、新苗 正和
  • Journal Title: 水環境学会誌 Volume: 41 Pages: 73-81
• [Journal Article] Preferential adsorption and surface precipitation of lead(II) ions onto anatase in artificially contaminated Dixie clay (2017)
  • Author(s): Tasuma Suzuki, Miyu Okita, Satoshi Kakoyama, Masakazu Niinae, Hideki Nakata, Hiroshi Fujii, Yukio Tasaka
  • Journal Title: Journal of Hazardous Materials Volume: 338 Pages: 482-490
  • DOI: 10.1016/j.jhazmat.2017.05.061
  • Peer Reviewed
• [Journal Article] Lead(II) immobilization in kaolinite at near-neutral pH conditions using titanium-based compounds (2017)
  • Author(s): Tasuma Suzuki, Satoshi Kakoyama, Takeshi Nomura, Chihiro Fukuoka, Masakazu Niinae
  • Journal Title: Journal of Environmental Chemical Engineering Volume: 5 Issue: 4 Pages: 3129-3135
  • DOI: 10.1016/j.jece.2017.06.002
  • Peer Reviewed
• [Journal Article] Influence of Humic Substances on the Arsenate Immobilization Performance by Magnesium Oxide (2016)
  • Author(s): 鈴木 祐麻，中原 史也，縫部 俊晴，新苗 正和
  • Journal Title: Journal of MMIJ Volume: 132 Issue: 8 Pages: 137-143
  • DOI: 10.2473/journalofmmij.132.137
  • NAID: 130005263072
  • ISSN: 1881-6118, 1884-0450
  • Peer Reviewed / Open Access
• [Presentation] 酸化マグネシウムと第一鉄塩を用いたセレン(VI)汚染土壌の不溶化処理 (2019)
  • Author(s): 諸富 弘樹
  • Organizer: 日本海水学会若手会第10回学生研究発表会
• [Presentation] デキシークレー中における鉛(II)イオンのアナターゼへの選択的収着現象 (2018)
  • Author(s): 鈴木 祐麻
  • Organizer: 第30回環境システム計測制御学会研究発表会
• [Presentation] 酸化マグネシウムと第一鉄塩を用いたセレン(VI)汚染土壌の不溶化処理 (2018)
  • Author(s): 須江 健太郎
  • Organizer: 環境資源工学会第137回学術講演会
• [Presentation] 酸化マグネシウムと第一鉄塩を用いたセレン(VI)汚染土壌の不溶化処理 (2018)
  • Author(s): 須江 健太郎
  • Organizer: 資源・素材学会平成30年度春季大会
• [Presentation] 硫砒鉄鉱の酸化溶解に伴うヒ素の溶出に鉄イオンが与える影響 (2017)
  • Author(s): 須江 健太郎，鈴木 祐麻，新苗 正和
  • Organizer: 日本海水学会若手会第8回学生研究発表会
  • Place of Presentation: 海峡 メッセ下関 国際貿易ビル(山口県下関市）
  • Year and Date: 2017-03-02
• [Presentation] Role of dissolved oxygen and ferrous/ferric ion concentrations on arsenic release by oxidative dissolution of arsenopyrite (2017)
  • Author(s): Tasuma Suzuki
  • Organizer: The 14th International Symposium on East Asian Resources Recycling Technology
  • Int'l Joint Research
• [Presentation] 海水を原料とする酸化マグネシウムと第一鉄塩を用いたセレン(VI)汚染土壌の不溶化処理 (2017)
  • Author(s): 諸冨 弘樹
  • Organizer: 日本海水学会若手会第9回学生研究発表会
• [Presentation] Immobilization of Aesenate in Soils by the Addition of Magnesium Oxide: An Experimental and Modeling Investigation (2016)
  • Author(s): 鈴木 祐麻，中原 史也，川本 孝国，新苗 正和
  • Organizer: XXVIII International Mineral Processing Congress
  • Place of Presentation: ケベック市（カナダ）
  • Year and Date: 2016-09-12
  • Int'l Joint Research