title: Optimization of simulated moving bed plants with low efficient stationary phases: separation of fructose and glucose.
abstract: An optimization procedure for simulated moving bed (SMB) plants with low efficient stationary phases is presented. The new aspect is that the desorbent consumption can be cut by 70% by running the plant with lower internal liquid flows and a corresponding larger switch time while the productivity is kept constant. This concept was validated by the separation of fructose and glucose in water on a calcium resin with an eight-column SMB plant. The separation can be predicted well by a true moving bed (TMB) and a simulated moving bed simulation. Adsorption isotherms were determined up to 300 kg/m3 for glucose and 500 kg/m3 for fructose from 25 to 80 degrees C. Experimental SMB runs were performed over a wide range of feed concentrations (10-350 kg/m3) and temperatures (25-80 degrees C). The strong influence of the delay volume is pointed out. For an experimental run with high feed concentration a complete set of data is presented. To reduce biological growth separation at 80 degrees C is recommended.
authors.affiliation: Institut fuer Verfahrenstechnik, FG Thermodynamik und therm. Verfahrenstechnik, Berlin, Germany.
authors.forename: Y A
authors.initials: YA
authors.lastname: Beste
authors.forename: M
authors.initials: M
authors.lastname: Lisso
authors.forename: G
authors.initials: G
authors.lastname: Wozny
authors.forename: W
authors.initials: W
authors.lastname: Arlt
mesh_terms: D005632:Fructose / Q000302:isolation & purification*; D005947:Glucose / Q000302:isolation & purification*; D015203:Reproducibility of Results; D013696:Temperature; D013816:Thermodynamics
chemical_list: D005632:Fructose; D005947:Glucose