Enhanced sorption of Cu2+ from sulfate solutions onto modified electric arc furnace slag
Authorized Users Only
2019
Authors
Nikolić, Irena
Marković, Smilja

Veselinović, Ljiljana

Radmilović, Vuk V.

Janković Častvan, Ivona
Radmilović, Velimir R.
Article (Published version)

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Show full item recordAbstract
Pristine electric arc furnace slag (EAFS) as well as EAFS modified by alkali activation i.e. alkali activated slag (AAS) have found a novel application as adsorbents used in Cu2+ removal from sulfate solutions. The adsorption tests were carried in batch conditions and results have shown that alkali activation of EAFS enhances the Cu2+ adsorption. The adsorption process was found to follow a pseudo second-order kinetic model and occurs via formation of posnjakite (Cu4(SO4)(OH)6·H2O) on the surface of both, EAFS and AAS. Enhanced adsorption properties of AAS, compared to EAFS, are attributed to a more porous structure, larger specific surface area and an increased number of surface groups involved in the binding of Cu2+.
Keywords:
adsorption / alkali activation / copper / FTIR / porous materials / steel slagSource:
Materials Letters, 2019, 235, 184-188Publisher:
- Elsevier
Projects:
- Ministry of Science of Montenegro, Project no. 01-2383/2
- Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-45019)
- Development, characterization and application nanostructured and composite electrocatalysts and interactive supports for fuel cells and water electrolysis (RS-172054)
- Serbian Academy of Sciences and Arts, Project F-141
DOI: 10.1016/j.matlet.2018.10.027
ISSN: 0167-577X