Monitoring of sugars adsorption breakthrough curves with online Raman spectroscopy.

We introduce a new application for online Raman spectroscopy to monitor adsorption breakthrough curves of a glucose and xylose mixtures. Univariate and multivariate Partial Least Squares (PLS) calibration models are developed for each sugar when they are dissolved in water and in the case of the ethanol addition as a cosolvent. The models are validated by performing actual breakthrough experiments in a liquid phase using a column packed with a zeolite adsorbent.

Unexpected Si:Al effect on the binary mixtures liquid phase adsorption selectivities in faujasite zeolites.

A batch technique was applied to determine the equilibrium adsorption of benzene from its benzene/octane and benzene/octene mixture on NaX (Si:Al 1.20) and NaY (Si:Al 2.79) in liquid phase.