Carbon filtration is a process that uses activated carbon to remove impurities and contaminants from air or water. The activated carbon has a large surface area with many tiny pores, allowing it to trap particles, chemicals, and odors effectively. This method is commonly used in water treatment systems, air purifiers, and even in some types of respirators. The effectiveness of carbon filtration depends on factors like contact time and the type of contaminants present. While it can remove many organic compounds and chlorine, it may not be effective against all pollutants, such as heavy metals or certain pathogens. Regular replacement of the carbon filter is necessary to maintain its efficiency.