What is the role of powdered activated carbon in water treatment?

Powdered activated carbon (PAC) plays a crucial role in water treatment primarily through its ability to adsorb contaminants. The surface area of PAC is incredibly high due to its porous structure, allowing it to effectively attract and bind various organic compounds, such as pesticides, volatile organic compounds, and taste and odor-causing substances. This adsorption process enhances water quality by removing these unwanted substances from the water.

By integrating PAC into the treatment process, water treatment facilities can significantly improve the overall aesthetic and safety aspects of drinking water. Its role in contaminant removal is essential, especially in addressing specific pollutants that conventional treatment methods may not fully eliminate. Hence, the correct identification of its primary function in this context emphasizes the importance of adsorption in maintaining safe and clean water supplies.