We presented a poster at the Symposium “Renewable chemicals from waste – securing the molecular value from waste streams” in the Royal Society of Chemistry, London, the 20th November. We displayed some preliminary results from the experiments on vanadium recovery from steel slag leachate with a commercial ion exchange resin.
Challenging pollutants such as vanadium are released during leaching of alkaline wastes . While it is contaminant of concern, vanadium (V) is also highlighted in recent strategic reviews of mineral security as being of critical importance to green technologies (with other elements such as La, Li, Co, V, Te, Ga, Se).
Our results demonstrate for the first time the extended alkaline pH range over which anion exchange resins can be used for metal removal and recovery from waste leachates. These results are promising for both the treatment of hazardous alkaline leachates and the recovery of metals of critical importance. Ongoing experiments are scaling-up the resin columns for pilot scale.