TY - JOUR N2 - The knowledge about membrane contactors is growing rapidly but is still insufficient for a reliable designing. This paper presents a new type of membrane contactors that are integrated with one of the following ways of separation by using absorbents, micelles, flocculants, functionalized polymers, molecular imprints, or other methods that are based on aggregation. The article discusses methods for designing multi-stage cascade, usually counter-current. At every stage of this cascade, relevant aggregates are retained by the membrane, while the permeate passes freely through membrane. The process takes place in the membrane boundary layer with a local cross-flow of the permeate and the retentate. So the whole system can be called a cross-counter-current. The process kinetics, k, must be coordinated with the permeate flux, J, and the rate of surface renewal of the sorbent on the membrane surface, s. This can be done by using ordinary back-flushing or relevant hydrodynamic method of sweeping, such as: turbulences, shear stresses or lifting forces. A surface renewal model has been applied to adjust the optimal process conditions to sorbent kinetics. The experimental results confirmed the correctness of the model and its suitability for design of the new type of contactors. L1 - http://journals.pan.pl/Content/84779/PDF/06-paper.pdf L2 - http://journals.pan.pl/Content/84779 PY - 2012 IS - No 4 December EP - 583 DO - 10.2478/v10176-012-0047-5 KW - membrane contactors KW - sorption processes KW - integrated processes of separation KW - designing KW - surface renewal theory A1 - Kołtuniewicz, Andrzej B. A1 - Modelski, Szymon A1 - Witek, Anna PB - Polish Academy of Sciences Committee of Chemical and Process Engineering DA - 2012 T1 - Designing of Membrane Contactors with Cross-Counter Current Flow SP - 573 UR - http://journals.pan.pl/dlibra/publication/edition/84779 T2 - Chemical and Process Engineering ER -