Studies on Boron Recovery

Abstract

This paper presents the studies made in laboratory in order to recover boron from waters, where boron is found as borate. First it was realised the retention of boric acid from waters on a resin Vionit AS-116 produced in Romania. It was noticed that waters, which content organic compounds like phenol, reduce the retention process of boric acid. For these waters it was applied a retention process of the phenols on a copolymeric resin CA-30 produced in Romania. After that phenol was removed, the retention of boric acid from water on Vionit AS-116 resin was done in good conditions. The retained boric acid was then eluted from the resin with a diluted sulphuric acid solution. In this way it could be recovered boron from solutions with a methaboric acid content around 100 mg/l.