Mechanisms and efficiency of the simultaneous removal of metals and cyanides by using ferrate(VI): crucial roles of nanocrystalline iron(III)oxyhydroxides and metal carbonates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F11%3A10105329" target="_blank" >RIV/00216208:11310/11:10105329 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/11:33142761

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 iron(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 iron(III) 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, Moessbauer 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 completel

Název v anglickém jazyce

Mechanisms and efficiency of the simultaneous removal of metals and cyanides by using ferrate(VI): crucial roles of nanocrystalline iron(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 iron(III) 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, Moessbauer 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 completel

Druh

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

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

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

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

10097-10105

Kód UT WoS článku

000295357800031

EID výsledku v databázi Scopus

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