2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

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Oral presentation

R4: Mineral sciences of the Earth surface

Thu. Sep 16, 2021 2:00 PM - 5:15 PM Zoom Session 3

Chairperson:Keisuke Fukushi(Kanazawa University), Tadashi Yokoyama(Hiroshima University), Jun Kawano(Hokkaido University), Hiroshi Sakuma(NIMS), Satoshi Utsunomiya(Kyushu University)

2:00 PM - 2:15 PM

[R4-01] Analysis of molybdenum adsorption formation on oxide by surface complexation model

[Presentation award entry]

*Akihiro Okuyama1, Keisuke Fukushi1, Teruhiko Kashiwabara2 (1. Kanazawa Uni. Sci., 2. JAMSTEC)

Keywords:molybdate, adsorption, surface complexation modeling

In this study, the molybdate adsorption data of ferrihydrite, goethite, amorphous aluminum oxide, gibbsite, δAl2O3, and anatase from previous studies were analyzed using the extended triple layer model (ETLM) of the surface complex model. In addition, a molybdenum adsorption experiment of δMnO2 was conducted, and the results were also analyzed. Adsorption data could be reproduced using the formation reaction of one outer-sphere complex and two inner-sphere complexes.