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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemistry: A European Journal

ISSN

0947-6539

e-ISSN

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Svazek periodika

17

Číslo periodika v rámci svazku

36

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

10097-10105

Kód UT WoS článku

000295357800031

EID výsledku v databázi Scopus

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