Abstract
This paper reports the results of studying dual-temperature ion-exchange concentrations of Cu2+ from acidic mine waters on acrylic resin Lewatit R 250-K in applying seawater as a regenerant. Application of seawater as an auxiliary reagent has been shown to enhance selective concentration of copper. Loading of the resin in the initial seawater form with mine water at 20 °C followed by thermostripping with hot mine water at 80 °C has been shown to result in an 3-fold increase of copper concentration in the first portions of the eluete. The repetitive thermosorption-thermostripping concentration cycles appear to be less efficient and give around 25% increase of Cu2+ concentration. The applicability of seawater for regeneration of the resin in the course of ion-exchange treatment of mine water has been successfully demonstrated, and the flow sheet of a proposed process is presented.
| Original language | English |
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| Pages (from-to) | 379-383 |
| Journal | Environmental Science and Technology |
| Volume | 31 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Feb 1997 |