Granular activated carbon (GAC) is a highly porous form of carbon that is widely used as a chemical substance due to its exceptional adsorption properties. It is produced by subjecting carbonaceous materials, such as coal, wood, or coconut shells, to high temperatures in the absence of oxygen, resulting in a porous structure with a large surface area. The surface of GAC is covered with numerous microscopic pores, which provide an extensive area for adsorption.
GAC is employed in various industries and applications, particularly in water and air purification processes. It effectively removes a wide range of impurities, contaminants, and pollutants through adsorption. The porous structure of GAC attracts and retains organic compounds, heavy metals, chlorine, pesticides, volatile organic compounds (VOCs), and other harmful substances present in water or air.
In water treatment, GAC is commonly used in the form of filter beds or cartridges. As water flows through these beds, the contaminants are adsorbed onto the carbon surface, resulting in cleaner and safer water. GAC can efficiently remove tastes, odors, chlorine, disinfection by-products, and many organic compounds, making it a versatile and valuable tool in water treatment facilities.
In air purification, GAC is employed in filters or adsorption units to capture and remove volatile organic compounds, gases, and unpleasant odors. It helps improve indoor air quality by effectively reducing the concentration of harmful pollutants.
Granular Activated Carbon’s General Characteristics
- Porous structure with large surface area
- High adsorption capacity for a wide range of impurities
- Derived from various carbonaceous materials
- Available in granular form with different particle sizes
- Versatile and customizable for different applications
- Used in water and air treatment systems
- Regenerable through thermal or chemical processes
- Long-lasting with proper maintenance
- Generally safe for use in water and air treatment
Granular Activated Carbon Uses in Water Treatment
Granular activated carbon (GAC) is extensively used in water treatment due to its exceptional adsorption properties. It plays a vital role in the removal of various contaminants, including organic compounds, disinfection by-products, heavy metals, chlorine, chloramines, and volatile organic compounds (VOCs). GAC effectively improves the taste, odor, and overall quality of water by adsorbing and eliminating these impurities. Its applications range from large-scale municipal water treatment facilities to point-of-use systems such as residential water filters. By selectively adsorbing contaminants, GAC helps ensure safer and cleaner drinking water. Consideration of GAC characteristics, contact time, and flow rates is important for effective implementation in water treatment processes, alongside professional guidance and adherence to recommended practices. Order granular activated carbon from Water Solutions Unlimited.
