Activated alumina is highly porous material, this material can have a surface area significantly over 200 square metres/g. Very suitable for use as a filter of fluoride, arsenic and selenium in drinking water.
Activated Alumina Desiccants:
Activated Alumina Desiccants is a porous form of aluminum oxide. It has a high surface area which adsorbs vapors without any change in form. Activated Alumina Desiccants will not soften or disintegrate easily when immersed in water.
Dew points to -40°F and lower may be achieved with Activated Alumina Desiccants depending on dryer design and operating conditions.
The 1/8” (2-5mm) bead is the size most frequently used in regenerative dryers.
The 3/16” (4-8mm) bead is used when pressure drop and surface area requirements fall between 1/8” and 1/4” material. It is suitable for most systems.
The 1/4” (5-10mm) bead Activated Alumina Desiccants is used both as a pre-bed material to support large desiccant beds or as a buffer for silica gel beads. Pressure drop is slightly lower than 1/8” (25mm) material.
If size is not known or specified, the 1/8” (2-5mm) size is usually satisfactory. However, if Activated Alumina Desiccants is used in a regenerative dryer and the desiccant retaining screens cannot be measured, the 1/4” (5-10mm) size should be used as a bed support (6” layer). If at all possible, obtain a sample and measure it before ordering.
Product Benefits:
Physical Properties:
1/8” (2-5mm) | 3/16”(4-8mm) | 1/4” (5-10mm) | |
Color and form | White bead | White bead | White bead |
Bulk density | 48 lbs/Ft3 | 48 lbs/Ft3 | 48 lbs/Ft3 |
Crush strength | 17-30 lbs | 145-60 lbs | 50-70 lbs |
Surface area | 1.74 x 106 sq ft/lb | 1.65 x 106 sq ft/lb | 1.59 x 106 sq ft/lb |
Static adsorption Humidity |
- | - | - |
100% RH 90% RH 60% RH 10% RH |
42.0% 37.5% 21.0% 7.5% |
40.0% 35.0% 21.0% 7.0% |
36.0% 32.0% 17.5% 6.0% |
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Also refer more details of Impregnated Activated Alumina with potassium permagnate KMNO4.
Potassium Permanganate Impregnated Alumina has strong oxidizing property with Potassium Permanganate (KMnO4), it has good efficienty in removing Hydrogen Sulfide(H2S) , Chlorine(Cl2), Formaldehyde(HCHO), Nitric Oxide (NO) & Sulfur Dioxide(SO2) from air.