Electrochemical monitoring of metal ions removal in Fe-0/H2O systems: competitive effects of cations Zn2+, Pb2+, and Cd2+
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F20%3A00536196" target="_blank" >RIV/61388955:_____/20:00536196 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0314003" target="_blank" >http://hdl.handle.net/11104/0314003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00706-020-02683-6" target="_blank" >10.1007/s00706-020-02683-6</a>
Alternative languages
Result language
angličtina
Original language name
Electrochemical monitoring of metal ions removal in Fe-0/H2O systems: competitive effects of cations Zn2+, Pb2+, and Cd2+
Original language description
Metallic iron (Fe-0) is a reactive material that is widely used for industrial water treatment. The course of the metal ion removal process using Fe-0(iron powder) was monitored electrochemically (differential pulse polarography). As probe species, Zn2+, Pb2+, and Cd(2+)were selected for their different (1) adsorptive affinity to iron corrosion products (FeCPs), (2) redox properties, (3) precipitation ability at various pH. Batch experiments were carried out with binary (Zn2+/ Pb(2+)and Zn2+/ Cd2+) and ternary (Zn2+/Cd2+/Pb2+) systems to reveal the mutual interference of these cations. Detailed time monitoring of iron aging for up to 14 days as well as concentration decay of individual removed cations represent important data for mechanistic discussions. The aqueous concentration of Fe(2+)was also monitored. FeCPs were characterized using X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Results showed that the presence of Pb(2+)delays the Zn(2+)removal whereas the presence of Cd(2+)in solution accelerates its removal. The removal of Pb(2+)by FeCPs was not affected by the presence of Zn(2+)and Cd2+, moreover, the Pb(2+)inhibited the effect of Cd(2+)on the removal of Zn2+. XPS has proven existence of Fe(2)O(3)and hydrated Fe oxidic phase, whilst the SEM showed that the original Fe grains were partly dissolved into buffered ambient under formation of fine particles of FeCPs. Results confirm that reductive transformation of any contaminant in a Fe-0/H2O system is the consequence and not the cause of iron corrosion.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monatshefte fur Chemie
ISSN
0026-9247
e-ISSN
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Volume of the periodical
151
Issue of the periodical within the volume
10
Country of publishing house
AT - AUSTRIA
Number of pages
13
Pages from-to
1511-1523
UT code for WoS article
000576777800002
EID of the result in the Scopus database
2-s2.0-85092225799