Activated alumina, also known as aluminium oxide, is often used as a desiccant for various purposes due to its robust nature. With a high surface area of over 200m2g it is used to absorb many different substances such as liquid and gases, while its form remains unchanged. As air pass through it, the water in the air sticks to the alumina and becomes trapped and the air that pass through is dried out. Even in liquid, it will not fall apart.
With its various properties such as high water adsorption capacity, mechanical strength and low attrition lost, the desiccant is able to give a dew point of at least -40 °C and up to -70 °C when under high pressure.
When exposed to moisture in the long run, the Activated Alumina adsorbs. The contaminant will bond with the alumina and will only be restored to its full capacity by heating it at high temperature from 177° to 316°C. When it is heated, the water that is stuck to the alumina as previously mentioned, will be released. Therefore, the alumina can now be reused multiple times.
The activated alumina is very stable, it will bond with other substances without changing its form, because of this, its surface area is much larger than its weight therefore it is able to adsorb more efficiently.
Therefore, the physical and chemical features of this product makes it very important and essential for everyday and business needs.
- Purifying of water for industrial, water treatment plants and home uses. It is done through the removal of fluoride, arsenic and selenium from drinking water.
- Removal of catalyst residue in ethylene products
- Absorbing of catalyst in polythene and hydrogen peroxide products
- Cleaning of process stream by removing HF, Chloride of HCI from contaminated gas
Find out more about Activated alumina here