What is Granular Activated Carbon (GAC) used for?

• A. To enhance water pressure
• B. To remove taste and odor from water
• C. To disinfect water
• D. To store excess treated water

Answer: (B)

Granular Activated Carbon (GAC) is primarily used for the removal of taste and odor from water. This is due to its highly porous structure and large surface area, which allows it to effectively adsorb a variety of organic compounds, including those responsible for unpleasant tastes and smells. GAC functions through a process known as adsorption, where contaminants adhere to the surface of the carbon particles as water passes through. This makes it particularly effective in processes that seek to improve the palatability of drinking water.

Additionally, GAC can also remove certain chemicals and impurities, which further contributes to its role in water treatment. It provides a reliable method for enhancing water quality and is commonly used in both municipal water systems and point-of-use systems such as home water filters. Thus, the use of GAC is integral to producing clean, pleasant-tasting water for consumers.