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2016 Fiscal Year Final Research Report

Adsorption behaviors of cesium and selenium on biogenic iron oxyhydroxides

Research Project

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Project/Area Number 15H06903
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Environmental dynamic analysis
Research InstitutionJapan 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
Keywordsferrihydrite / biogenic ferrihydrite
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.

Free Research Field

生物地球化学

URL: 

Published: 2018-03-22  

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