The kinetic features of vanillin sorption by weak basic anion-exchange resin in diluted solutions
The kinetic parameters of vanillin sorption by weak-base polyfunctional anion-exchange resin Purolite A 830 are studied. Based on the dependence of equilibration rate on solution stirring rate, its concentration, and the radius of sorbent granules it is found that for concentrations of aldehyde up to 1.5 · 10 <sup>-3</sup> mol/dm <sup>3</sup> the limiting stage of sorption is the external diffusion.