Adsorption behaviors of cesium and selenium on biogenic iron oxyhydroxides

• Project/Area Number: 15H06903
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Environmental dynamic analysis
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: KIKUCHI Sakiko 国立研究開発法人海洋研究開発機構, 次世代海洋資源調査技術研究開発プロジェクトチーム, ポストドクトラル研究員 (50758852)
• Project Period (FY): 2015-08-28 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: ferrihydrite / biogenic ferrihydrite / 水酸化鉄 / 吸着 / 鉄酸化菌 / 微量元素

Outline of Final Research Achievements

This study compared cesium and selenium adsorptions between biogenic iron oxyhydroxides (BIOS) and synthetic ferrihydrite. Compared to synthetic ferrihydrite, BIOS showed enhanced adsorption for positively-charged cesium whereas decreased adsorption for negatively-charged selenium. This different adsorption of cesium and selenium on BIOS from synthetic ferrihydrite can roughly be explained by the electrostatic effect. On the other hand, adsorption of selenate on BIOS was more strongly inhibited compared to that of selenite, which can be explained by the different mode of attachment on the surface of BIOS.

Research Products

• [Journal Article] Comparative Analysis of Microbial Communities in Iron-Dominated Flocculent Mats in Deep Sea Hydrothermal Environments (2016)
  • Author(s): Makita, H., Kikuchi, S., Mitsunobu, S., Takaki, Y., Yamanaka, T., Toki, T., Noguchi, T., Nakamura, K., Abe, M., Hirai, M., Yamamoto, M., Uematsu, K., Miyazaki, J., Nunoura, T., Takahashi, Y., and Takai, K.
  • Journal Title: Applied and Environmental Microbiology Volume: 82 Issue: 19 Pages: 5741-5755
  • DOI: 10.1128/aem.01151-16
  • NAID: 120006383301
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Limited reduction of ferrihydrite encrusted by goethite in freshwater sediment (2016)
  • Author(s): S Kikuchi, H Makita, U Konno, F Shiraishi, A Ijiri, K Takai, M Maeda, Y Takahashi
  • Journal Title: Geobiology Volume: 14 Issue: 4 Pages: 276-292
  • DOI: 10.1111/gbi.12181
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] 天然の水酸化鉄へのセシウムおよびセレンの吸着： 合成水酸化鉄との比較 (2016)
  • Author(s): 菊池早希子、柏原輝彦、高橋嘉夫
  • Organizer: 2016年度日本地球化学会年会
  • Place of Presentation: 大阪市立大学杉本キャンパス（大阪府大阪市住吉区）
  • Year and Date: 2016-09-14
• [Presentation] Limited reduction of ferrihydrite encrusted by goethite in freshwater sediment (2016)
  • Author(s): Sakiko Kikuchi, Hiroko Makita, Uta Konno, Fumito Shiraishi, Ken Takai, Yoshio Takahashi
  • Organizer: Goldschmidt 2016
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2016-06-27
  • Int'l Joint Research
• [Presentation] 微生物由来の水酸化鉄へのセレンおよびセシウムの吸着： 無機水酸化鉄との吸着特性の比較 (2016)
  • Author(s): 菊池早希子、柏原輝彦、高橋嘉夫
  • Organizer: 日本地球惑星科学連合2016年大会
  • Place of Presentation: 幕張メッセ（千葉県千葉市）
  • Year and Date: 2016-05-23
• [Presentation] Difference of trace elements adsorption between Fe (oxyhydr)oxides and Fe (oxyhydr)oxides-bacteria composites (2016)
  • Author(s): Sakiko Kikuchi, Teruhiko Kashiwabara, Yoshio Takahashi
  • Organizer: International workshops on marine manganese minerals
  • Place of Presentation: 高知大学（高知県高知市）
  • Year and Date: 2016-03-18
  • Int'l Joint Research
• [Presentation] 二次鉱物の被膜による微生物生成水酸化鉄の生物利用性の低下 (2015)
  • Author(s): 菊池早希子，牧田寛子，白石史人，今野祐多，高橋嘉夫
  • Organizer: 日本地球化学会
  • Place of Presentation: 横浜国立大学（神奈川県横浜市）
  • Year and Date: 2015-09-16