Activated alumina desiccants provide excellent industrial packaging solutions, from protecting chemicals and machinery against moisture-induced corrosion to creating a dry storage and shipping environment.
Due to its excellent moisture adsorption capacity, kaolin clay is an ideal material for absorbing moisture in both liquids and gases. Inoltre, being chemically inert makes kaolin ideal for applications involving elevated temperatures.
Water Filtration
Actived alumina’s absorbent properties make it an effective water filtering agent to remove fluoride from drinking water supplies, helping prevent dental fluorosis as well as harmful levels of fluoride entering groundwater supplies. This technology is employed widely at municipal and regional drinking water treatment plants across the world to remove this danger.
Heat treatment of alumina alters its surface structure, enabling water molecules to adhere to its high-energy sites and adhere to activated alumina’s surface structures more readily. Come tale, its ability to adsorb water depends on factors like calcination/activation conditions as well as porosity/particle size ratio.
Calcination and activation involves thermally decomposing aluminum trihydroxide to release water vapor, leaving behind an alumina powder which has lost approximately 4-7 percent of its mass upon ignition. This powder then bonds with water through acidic or alkaline chemicals to form spherical and granular adsorbents of desired size and shape.
Reversible water absorption by activated alumina desiccant enables it to capture moisture from air passing through its tiny passages and effectively dry it out, improving indoor environmental standards. Inoltre, this process is reversible; activated alumina can be heated up to 200degC to release any trapped moisture from within its pores.
Activated alumina has been independently verified as safe for use in potable water by both the National Sanitation Foundation (NSF) and California Proposition 65, both renowned environmental groups. NSF certification requires that activated alumina adsorbents do not leach contaminants into filtered water in excess of the EPA Secondary Drinking Water Standards for iron and manganese concentrations.
Gas and Vapour Adsorption
Activated alumina desiccants are integral parts of air treatment applications. These products work by absorbing harmful chemical and gas vapors as well as moisture, thus improving overall air quality in commercial and industrial settings. Their versatility shines through in heating, ventilation and air conditioning (HVAC) systems where they function as efficient humidifiers that regulate moisture levels while simultaneously protecting against mold spore growth and other forms of contamination.
Activated alumina’s microstructure offers an extensive surface area for molecular interactions, providing it with ample opportunities to capture different types of contaminants and remove excess water from hydrocarbon streams. Come tale, activated alumina serves an invaluable purpose by filtering liquids and gases as well as extracting impurities out.
Molecular sieve is typically used to separate ethanol from water; Tuttavia, activated alumina has a stronger affinity for water and offers superior adsorption properties than molecular sieve for such applications. Inoltre, molecular sieve requires ion exchange to tailor its pores while activated alumina can be sized according to each application’s needs.
FEECO provides thermal and agglomeration testing at our Innovation Center to ensure our products will fit seamlessly with your application. Get in touch with us to discover more about how our proprietary process and patented technology can benefit your business, or reach out for answers or assistance in finding a suitable solution to meet your needs. Our experts are standing by with answers for any of your inquiries or provide the perfect solutions tailored specifically for you!
Chlorine Gas Removal
Porous activated alumina is used in industrial settings where chlorine gasses are toxic, to safely remove them using an adsorption process that increases worker safety while improving product quality. This approach ensures safety of workers as well as better product output.
Process temperatures range between 400 and 650 gradi C; procedure parameters like dwell time and temp profile can be used to impact on the finished product’s qualities. Activated alumina is commonly created from bauxite which undergoes physical and chemical transformations during its agglomeration and activation processes; its final qualities can also be affected by initial composition, method of agglomeration and use of promoters like sodium bicarbonate as well as impregnates containing Group 1A metal hydroxides and Group 7A metal salts.
Adsorption processes depend heavily on the surface area and pressure available from water for each activated alumina granule, and are determined by flow rate and contaminant removal capacity as key criteria in selecting an activated alumina device for any given application. It should be noted that activated alumina is an extremely hazardous chemical when handled improperly; special precautions must be taken whenever using this material in production settings. FEECO offers a full-scale Innovation Center offering thermal and agglomeration testing, along with continuous process loop testing services integrated across all these phases to ensure safe production environments for any given production phase involving activated alumina materials used during production processes. FEECO offers this full-scale Innovation Center offering thermal/agglomeration/continuous process loop testing of activated alumina products, offering continuous process loop testing integrated between all these phases allowing continuous process loop testing.
Electronics Packaging
Activated alumina is an excellent desiccant to protect electronic components from moisture damage. It is often employed in compressed air systems to remove moisture before it enters the compressor, eliminating corrosion and rust problems, while it is also widely employed by chemical and petrochemical industries to prevent moisture contamination of chemicals, gas, liquids etc. Plus it offers effective moisture control solutions for industrial air conditioning systems.
This material boasts high absorption capacity due to its porous structure that contains many voids and tunnel-like pores, and high resistance against harsh chemicals and high temperatures, as well as being regenerable allowing it to be reused again and again, saving money on waste disposal costs.
Alumina media typically boasts a specific surface area of 200-300 m2 g-1 and can be utilized for water treatment applications involving defluorination of phosphate, arsenic and fluoride as well as for heavy metal removal such as cadmium, mercury, lead and nickel in fixed bed operations. Inoltre, this material serves as an effective adsorbent against urea ammonia and hydrogen peroxide for effective moving bed systems.
Activated alumina is non-toxic, odorless and flavorless material that can be stored safely in any environment. However, for optimal storage conditions it should be stored in tightly sealed containers away from direct sunlight or excessive heat as this could compromise its adsorption capacities. Inoltre, other activated alumina types should not be mixed together and stored separately to preserve its high adsorption capacities.