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STUDIES ON THE FERRIC IRON SORPTION FROM ACID MINE DRAINAGE ON LEWATIT RESIN AS A STEP FOR METAL CONVERSION TO A VALUE-ADDED PRODUCT

Authors: Plamen Georgiev; Marina Nicolova; Maria–Filipa Ivanova; Irena Spasova; Stoyan Groudev;

STUDIES ON THE FERRIC IRON SORPTION FROM ACID MINE DRAINAGE ON LEWATIT RESIN AS A STEP FOR METAL CONVERSION TO A VALUE-ADDED PRODUCT

Abstract

The study aimed to determine the optimal conditions for adsorption and elution of iron from acid mine drainage by ion-exchange resin LEWATIT MonoPlus TP 207 under a batch regime of operation. Langmuir's sorption equation was employed to analyse the equilibrium data from the experiments. The data fitting demonstrated that the process obeyed pseudo-second-order kinetics with a linear regression coefficient (R2) of 0.9999. Because of the higher demand for hydrochloric solution (100 g/ L) for the ferric iron elution, we studied the effect of the preliminary stage of galvanic elution of Fe(III) to Fe(II) in the presence of H2. In that way, a slightly acidic solution (30 g/ L) was sufficient to desorb more than 95 % of iron from ion exchange resin LEWATIT MonoPlus TP 207 at a temperature of 70 °C.

Keywords

iron, sorption, Mining engineering. Metallurgy, lewatit, TN1-997, iron, LEWATIT, sorption, reductive elution

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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