Stability and leaching of cobalt smelter fly ash

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10134045" target="_blank" >RIV/00216208:11310/13:10134045 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.apgeochem.2012.11.003" target="_blank" >http://dx.doi.org/10.1016/j.apgeochem.2012.11.003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apgeochem.2012.11.003" target="_blank" >10.1016/j.apgeochem.2012.11.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stability and leaching of cobalt smelter fly ash

Popis výsledku v původním jazyce

The leaching behaviour of fly ash from a Co smelter situated in the Zambian Copperbelt was studied as a function of pH (5-12) using the pH-static leaching test (CEN/TS 14997). Various experimental time intervals (48 h and 168 h) were evaluated. The leaching results were combined with the ORCHESTRA modelling framework and a detailed mineralogical investigation was performed on the original FA and leached solid residues. The largest amounts of Co, Cu, Pb and Zn were leached at pH 5, generally with the lowest concentrations between pH 9 and 11 and slightly increased concentrations at pH 12. For most elements, the released concentrations were very similar after 48 h and 168 h, indicating near-equilibrium conditions in the system. Calcite, clinopyroxenes, quartz and amorphous phases predominated in the fly ash. Various metallic sulfides, alloys and the presence of Cu, Co and Zn in silicates and glass were detected using SEM/EDS and/or TEM/EDS. The leaching of metals was mainly attributed to

Název v anglickém jazyce

Stability and leaching of cobalt smelter fly ash

Popis výsledku anglicky

The leaching behaviour of fly ash from a Co smelter situated in the Zambian Copperbelt was studied as a function of pH (5-12) using the pH-static leaching test (CEN/TS 14997). Various experimental time intervals (48 h and 168 h) were evaluated. The leaching results were combined with the ORCHESTRA modelling framework and a detailed mineralogical investigation was performed on the original FA and leached solid residues. The largest amounts of Co, Cu, Pb and Zn were leached at pH 5, generally with the lowest concentrations between pH 9 and 11 and slightly increased concentrations at pH 12. For most elements, the released concentrations were very similar after 48 h and 168 h, indicating near-equilibrium conditions in the system. Calcite, clinopyroxenes, quartz and amorphous phases predominated in the fly ash. Various metallic sulfides, alloys and the presence of Cu, Co and Zn in silicates and glass were detected using SEM/EDS and/or TEM/EDS. The leaching of metals was mainly attributed to

Druh

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

CEP obor

DD - Geochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP210%2F12%2F1413" target="_blank" >GAP210/12/1413: Vliv těžby a úpravy rud na životní prostředí v Namibii: Modelování migrace polutantů v půdách, rostlinách a podzemních vodách</a><br>

Návaznosti

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

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

Applied Geochemistry

ISSN

0883-2927

e-ISSN

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Svazek periodika

29

Číslo periodika v rámci svazku

FEBRUARY

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

117-125

Kód UT WoS článku

000314687100009

EID výsledku v databázi Scopus

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