Separation of rubidium from boron containing clay wastes using solvent extraction

Add time:08/17/2019    Source:sciencedirect.com

Rubidium was predominately identified in boron clay (BC) as a result of the analyses of trace elements in boron industrial wastes that were investigated. In the first step, rubidium in the BC was removed from the solution by leaching in 1 M H2SO4 for 2 h. After a filtering operation, rubidium was separated from the solution by precipitation in the form of tetraphenylborate. In the second step, rubidium was extracted with 18-Crown-6 (0.1 M) in nitrobenzene from picric acid and stripped with 2 M of hydrochloric acid from the organic phase. 89.52% of the best rubidium extraction was achieved.

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