The equilibrium of strontium ion exchange on sodium titanate, Na4Ti9O20·xH2O
Abstract
The equilibrium of the ion exchange of strontium on sodium titanate, Na4Ti9O20·xH2O, has been studied. The ion exchange isotherm and selectivity coefficient showed high selecticity for strontium over sodium. The distribution coefficient was determined as a function of pH, and of the sodium and strontium concentrations. Special attention was paid to the three-component system H+–Na+–Sr2+, which exists in acidic to slightly alkaline solutions.