Role of pre-corrosion of Fe-0 on its efficiency in remediation systems: An electrochemical study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F18%3A00506535" target="_blank" >RIV/61388955:_____/18:00506535 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0297763" target="_blank" >http://hdl.handle.net/11104/0297763</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.chemosphere.2018.06.080" target="_blank" >10.1016/j.chemosphere.2018.06.080</a>
Alternative languages
Result language
angličtina
Original language name
Role of pre-corrosion of Fe-0 on its efficiency in remediation systems: An electrochemical study
Original language description
The duration of in-situ generation of iron corrosion products (FeCPs) prior the remediation process (so called ´´aging´´ of metallic iron (Fe-0)), was found as the key parameter affecting the efficiency of Fe-0 for water remediation. Batch experiments were performed in buffered solutions (pH 4.0, 4.7 and 5.5) and under oxic conditions (presence of dissolved oxygen) using Zn2+ as probe contaminant. The time-dependent (0-16 d) concentration changes of aqueous Fe2+ and Zn2+ were monitored using differential pulse polarography (DPP). During the time of pre-corrosion varying from 0 to 6 d, an ´´induction period´´ of the corrosion occurs in the first one 2 h when no Fe2+ ion is released in the solution. After this period, Fe2+ was identified in solution and its concentration progressively increases up to 6 h, then starts to decrease and after 6 d nearly disappears. Experiments with Zn2+ reveal that the most efficient Fe-0 remediation occurs after 6 h of pre-corrosion. This coherence thus proves that the presence, the amount and the age of FeCPs (´´degree´´ of corrosion) significantly impact the removal efficiency of Zn2+ in Fe-0/H2O systems. The present study severely refute the wording 'reactivity loss' and states that progress in designing sustainable Fe-0/H2O systems will not be achieved before the role of ´´active´´ FeCPs is clarified.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemosphere
ISSN
0045-6535
e-ISSN
—
Volume of the periodical
209
Issue of the periodical within the volume
OCT 2018
Country of publishing house
GB - UNITED KINGDOM
Number of pages
6
Pages from-to
617-622
UT code for WoS article
000442714400067
EID of the result in the Scopus database
2-s2.0-85049355072