and Si under anoxic and reducing conditions; Structural characteristics of ferrous silicate co-precipitatesFrancisco, P. C. M. 
; Mitsui, Seiichiro 
; Ishidera, Takamitsu ; Tachi, Yukio ; Doi, Reisuke ; Shiwaku, Hideaki
The interaction of Fe and S
-silicate phases, which play important roles in regulating the solubility and bioavailability of both Fe and Si, as well as serve as sinks for trace elements. Therefore, a detailed understanding of their structural characteristics may provide insights that may help in predicting their reactivity and stability under different conditions. In this work, co-precipitates with different Si/Fe ratios (0.5, 1.0 and 2.0) were synthesized under anoxic and reducing conditions at different solution pH (7, 9 and 11). The co-precipitates were studied using X-ray diffraction (XRD), infrared (IR) spectroscopy and Fe 
-edge X-ray absorption spectroscopy (XAS). The results show the immediate and rapid formation of phyllosilicate-like local structures from solution. These incipient structural units lack long-range order but may serve as the precursors of crystalline phases.
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: | English |
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: | 270 |
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: | p.1 - 20 |
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: | 2020/02 |
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Article of JAEA R&D Review |
: | Unveiling the Interaction Mechanism of Fe (II) and Si; Characterization of Ferrous Silicate Co-Precipitates under Reducing Conditions[ |
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Percentile:74.76 Category:Geochemistry & Geophysics |
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