Prediction Curves for Counter-Current Separations: Application to Lignin Aldehydes

Abstract

A theoretical investigation of the separation of pairs of solutes in a counter-current distribution train has been made. The results are presented as families of curves from which may be read the number of transfers necessary to effect a 95 or a 99 per cent. separation of a pair of substances of known partition coefficients. The applicability of the curves has been verified when used to predict the number of transfers necessary for the separation of aromatic aldehydes from the oxidative decomposition of lignins. No relation between R_F value and partition coefficient could be established for the solvents investigated.