TY - JOUR
T1 - Experimental assessment of simulated moving bed and varicol processes using a single-column setup
AU - Rodrigues, Rui C R
AU - Araújo, João M. M.
AU - Eusébio, Mário Fernando José
AU - Mota, José Paulo Barbosa
PY - 2007/1/1
Y1 - 2007/1/1
N2 - A novel single-column Setup for experimentally reproducing the steady periodic behavior of simulated countercurrent multicolumn chromatography is presented. The system relies on accurate online monitoring of the outlet effluent composition, processing the measured data through a node balance, and feeding it back into the column with an appropriate time delay using a multi-pump configuration to reproduce the desired inlet stream. The feasibility of the proposed system is demonstrated on the linear separation of two nucleosides using three different column configurations, which include both synchronous and asynchronous port switchings. By judiciously selecting the switching interval for process startup and applying a model-based startup procedure, the periodic state can be attained in just one or two cycles. Therefore, mobile phase and solute consumptions required to experimentally reproduce the periodic state of the equivalent multicolumn process are reduced to a minimum. This may be an economic, optimal manner of experimentally testing a set of operating conditions or cycle policy to achieve a given separation performance for a new multicolumn chromatographic separation. (c) 2006 Elsevier B.V. All rights reserved.
AB - A novel single-column Setup for experimentally reproducing the steady periodic behavior of simulated countercurrent multicolumn chromatography is presented. The system relies on accurate online monitoring of the outlet effluent composition, processing the measured data through a node balance, and feeding it back into the column with an appropriate time delay using a multi-pump configuration to reproduce the desired inlet stream. The feasibility of the proposed system is demonstrated on the linear separation of two nucleosides using three different column configurations, which include both synchronous and asynchronous port switchings. By judiciously selecting the switching interval for process startup and applying a model-based startup procedure, the periodic state can be attained in just one or two cycles. Therefore, mobile phase and solute consumptions required to experimentally reproduce the periodic state of the equivalent multicolumn process are reduced to a minimum. This may be an economic, optimal manner of experimentally testing a set of operating conditions or cycle policy to achieve a given separation performance for a new multicolumn chromatographic separation. (c) 2006 Elsevier B.V. All rights reserved.
U2 - 10.1016/j.chroma.2006.10.044
DO - 10.1016/j.chroma.2006.10.044
M3 - Article
SN - 0021-9673
VL - 1142
SP - 69
EP - 80
JO - Journal Of Chromatography A
JF - Journal Of Chromatography A
IS - 1
ER -