Water Transmission by Various Ceramic, Cellulose, Glass, and Steel Membranes1
- C. L. Wiegand and
- W. A. Swanson2
Water transmission characteristics were determined for several steel, ceramic, cellulose, and glass porous materials having pore diameters ranging from 0.5 to 15µ and air bubbling pressures ranging from 0.1 to 2.2 bars. Flow rates ranged from 0 to 1,500 ml hr-1 cm-2 m-1 water suction. The flow rate through materials that transmitted water faster than 15 ml hr-1 cm-2 m-1 water suction decreased slightly per unit suction as suction was increased from 1 to 8 m of water. Water transmission by materials with very low flow rates (< 0.3 ml hr-1 cm-2 m-1 suction) increased rapidly as suction increased. The results of this study offer a good comparison of the different materials under the same test conditions and indicate that the water transmission rate may be estimated from the bubbling pressure. However, the water transmission characteristics of particular porous material specimens must be determined individually if their flow characteristics must be known precisely.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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