Mechanisms and Efficiency of the Simultaneous Removal of Metals and Cyanides by Using Ferrate(VI): Crucial Roles of Nanocrystalline IronACHTUNGTRENUNG(III) Oxyhydroxides and Metal Carbonates

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F11%3A33118162" target="_blank" >RIV/61989592:15310/11:33118162 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/chem.201100711" target="_blank" >http://dx.doi.org/10.1002/chem.201100711</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/chem.201100711" target="_blank" >10.1002/chem.201100711</a>

Result language
angličtina
Original language name
Mechanisms and Efficiency of the Simultaneous Removal of Metals and Cyanides by Using Ferrate(VI): Crucial Roles of Nanocrystalline IronACHTUNGTRENUNG(III) Oxyhydroxides and Metal Carbonates
Original language description
The reaction of potassium ferrate(VI), K2FeO4, with weak-acid dissociable cyanides-namely, K2[Zn(CN)4], K2[Cd(CN)4], K2[Ni(CN)4], and K3[Cu(CN)4]-results in the formation of ironIII) oxyhydroxide nanoparticles that differ in size, crystal structure, andsurface area. During cyanide oxidation and the simultaneous reduction of iron(VI), zinc(II), copper(II), and cadmium(II), metallic ions are almost completely removed from solution due to their coprecipitation with the iron(III) oxyhydroxides including 2-line ferrihydrite, 7-line ferrihydrite, and/or goethite. Based on the results of XRD, Mçssbauer and IR spectroscopies, as well as TEM, X-ray photoelectron emission spectroscopy, and Brunauer-Emmett- Teller measurements, we suggest three scavenging mechanisms for the removal of metals including their incorporation into the ferrihydrite crystal structure, the formation of a separate phase, and their adsorption onto the precipitate surface. Zn and Cu are preferentially and almost completely
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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