Activated Alumina Desiccant Media for Gas Drying & Filtration Applications
Gremarco supplies activated alumina desiccant media designed for gas drying, moisture removal, and specialty filtration applications. With a high surface area porous structure, activated alumina effectively adsorbs water vapor, fluoride, and other contaminants from gas and liquid streams. Our materials are available in engineered formats with custom sizing and converting options to support industrial, environmental, and process filtration systems.
Here's how activated alumina air filtration works:
1
Adsorption
Like activated carbon, activated alumina functions through adsorption, where
gases and volatile compounds adhere to its surface. However, activated alumina is
particularly effective at adsorbing polar molecules and can be more selective in its adsorption
capacity.
2
Contaminant Removal
Activated alumina air filters are commonly used to remove contaminants such as acid gases (e.g., hydrogen sulfide and sulfur dioxide), acidic vapors, and certain volatile organic compounds (VOCs). It can also help control odors by adsorbing odor-causing compounds. In water filtration, as water flows through the activated alumina filter, specific contaminants like fluoride and arsenic are adsorbed onto the surface of the alumina. The adsorption capacity depends on the type and amount of activated alumina used, as well as the specific contaminants present in the air or water.
3
Clean Air Output
Over time, the adsorption capacity of activated alumina can become
saturated. To extend its lifespan and maintain effectiveness, the activated alumina can be regenerated by heating it to remove the adsorbed contaminants. This process restores the material's adsorption capacity, and the regenerated filter can be put back into service.
Applications of Activated Alumina
1
Wastewater Treatment:
In wastewater treatment plants, activated alumina may be used to remove specific odorous compounds and contaminants from air streams.
2
Fluoride Removal:
Activated alumina is effective at reducing elevated fluoride levels in drinking water, which can be a concern in some regions where natural fluoride concentrations are high.
3
Indoor Air Quality:
In certain indoor environments where specific pollutants or odors are aconcern, activated alumina air filters can be used in air purification systems.
4
Hospitals/Laboratories:
In healthcare facilities and laboratories, activated aluminafiltration may help maintain clean air quality by removing harmful or odorous gases.
5
Chemical Manufacturing:
It is employed in chemical manufacturing processes to captureand control hazardous gases.
6
Arsenic Removal:
It can also be used to reduce arsenic levels in drinking water, particularly in areas where groundwater contains arsenic above recommended limits.
7
Desiccant:
Activated alumina is used as a desiccant in various industrial processes to remove moisture from gases and liquids.
8
Catalyst Support:
In addition to filtration, activated alumina is used as a support material forcatalysts in various chemical processes.
Frequently Asked Questions:
What is activated alumina used for?
Used for gas drying, moisture removal, and fluoride adsorption in industrial filtration systems.
​
Is activated alumina a desiccant?
Yes, it is commonly used as a high-performance desiccant for gas and air drying applications.
​
What contaminants does activated alumina remove?
It can remove water vapor, fluoride, arsenic, and certain impurities from gas and liquid streams.
​
Can activated alumina be customized?
Yes, Gremarco offers custom formats and converting options based on application needs.