Membrane ultrafiltration in multipass hollow-fiber modules

Hyperbolic‐Tangent Model Analysis of Permeate Flux for Ultrafiltration in Hollow‐Fiber Modules by Momentum Balance

“…It was pointed out that (1/J) exp vs. ð1=DpÞ exp is a straight line (20, 28,29). Accordingly, when the abscissa ð1=DpÞ exp is zero, i.e., ðDpÞ exp !…”

Effect of varying incidental angles of a wire-rod insert on the performance of tubular ultrafiltration membranes

“…1"% Therefore, from a straight line plot of 1/~J)exp vs. /(AP)exp under certain operating conditions, Q; 1 and Ci, the values of qb (the intersection at ordinate) and (R m + Ry) (the slope) may be determined experimentally [18][19][20][21]. With the use of experimental data and Eq.…”

“…Several hydraulic approaches developed for reducing the effects of concentration polarization (CP) and progressive fouling to enhance the permeate flux, have been thoroughly discussed [7][8][9][10][11][12][13][14][15][16][17][18][19]. The use of inserts such as metal grills [7], static rods [8], spiral wire [9], disc-and doughnut-shaped inserts [10] and helical baffles [11][12][13][14], in a tubular membrane have been tried on different membrane processes.…”

“…Da Costa et al performed an extensive study of UF flux by net-type spacers [15][16][17]. The applications of combined [18] and multi-pass [19] systems in hollow-fiber modules were also reported.…”