Comparative evaluation of magnetite dissolution efficiencies of EDTA and OEDP aqueous solutions

The influence of EDTA and OEDP on the magnetite dissolution rate in various experimental conditions was studied. From a comparative analysis of rate data in commensurate conditions, EDTA is a more efficient complexone than OEDP. The effect of both the nitrogen-bearing and the phosphorus-bearing comp...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2009-05, Vol.54 (5), p.808-818
Main Authors: Gorichev, I. G., Artamonova, I. V., Nifant’ev, E. E., Zaben’kina, E. O., Kurilkin, V. V., Kishkina, N. A.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Physical Chemistry of Solutions
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Summary:The influence of EDTA and OEDP on the magnetite dissolution rate in various experimental conditions was studied. From a comparative analysis of rate data in commensurate conditions, EDTA is a more efficient complexone than OEDP. The effect of both the nitrogen-bearing and the phosphorus-bearing complexones was to change the potential at the oxide/solution interface. The potential-controlling reaction was recognized as Fe III Y − + H + + e = Fe II HY − .
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023609050210