Table 7. Inorganic Cross-flow Filters: Membrane Materials and Module Geometries Mem brane material Manufacturer/ Trade Name Module Geom etry Remarks U SF/Membralox ∝- A lumina Cerano MF: 0.2 to 5 um Zirconia USF/Mem bralox Tubular/multichannel UF with pore diameter 20 nm to 100 monolith Titan ia USF/Membralox Multichannel Zirconia Tech Sep/Kerasep Multichannel MWco10,000 Ceram Ceramet Honeycomb MF/UF with internal channel Cordierite monolith diameter of 1.5 to 2 mm hydroxide Dynam ically formed zirconium DuPont/Carre Tubu hydroxide or Zr(oH).polyacry lit acid mem branes for mF/uF A sahi Glass Mostly for UF ugh some MF Schott glass/Boran Tubular mem branes are Stainless Steel Mott. Pall Tubular Mostly for MF pore diameters 0.5 um and hig her
Fermentation and Biochemical Engineering Handbook 8 e e 1 0 c m N .e 2 .- 3 m L x .- e 0 n % 0 b 3 P 0 x a e X 9 P) .” 0 E E m c) P) P) e
Cross-Flow Filtration 287 10 Pore diameter, nm 24 MEMBRANE RADIUS (AI 0.16 P=9=< 0.08 KELVIN PORE RADIUS(AI Figure 4.(a) Typical pore size of inorganic MF and UF membranes
Cross-Flow Filtration 287 1 I PORE MEMBRANE RADIUS CAI - AL-I 19.7 ’ AL-I 19.7 - - - 0.m - - ‘lo I 35 30 x 0 L d Y 0 - L 0 V < E - c L 100 200 300 400 Pore diameter, nm (a) Figure 4. (a) Typical pore size (diameter) and (b) typical pore size (radius) distributions of inorganic h4F and UF membranes
Table 8. Typical Permeability Values of Cross-flow Microfilters Pore Diameter Membrane Material manufacturer/ Permeability Polyethylene/polypropylene Polysulfone Amicon, Millipore 400-600 0.1 0.1402 Fluoropolymer w L. Gore, Millipore olefins elgard, Memtek Carbone Lorraine l500 Membralox@ Cerano 2000-3000 PVDF 5 Polycarbonate 15000-45000 with water at l bar and 20%C unless otherwise noted
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