Stability and leaching of cobalt smelter fly ash

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Stability and leaching of cobalt smelter fly ash

Original language description

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

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DD - Geochemistry

OECD FORD branch

—

Project

<a href="/en/project/GAP210%2F12%2F1413" target="_blank" >GAP210/12/1413: Impact of ore mining and processing on the environment in Namibia: Modelling pollutants migration in soils, plants and groundwaters</a><br>

Continuities

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

Publication year

2013

Confidentiality

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

Name of the periodical

Applied Geochemistry

ISSN

0883-2927

e-ISSN

—

Volume of the periodical

29

Issue of the periodical within the volume

FEBRUARY

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

117-125

UT code for WoS article

000314687100009

EID of the result in the Scopus database

—