Kelin

 Everyday Applications of Activated Carbon: Activated carbon is commonly used in household water purifier filters to remove residual chlorine; it's used in new car odor-removing bags to absorb formaldehyde; and the activated carbon layer in gas masks can block toxic gases. Used activated carbon cannot be regenerated and needs to be replaced regularly.

How does activated carbon work? Activated carbon captures pollutants through physical adsorption (van der Waals forces). Micropores (<2nm) adsorb small molecules such as chlorine gas, while mesopores (2-50nm) intercept larger molecules such as dyes. Once the pores are filled, the activated carbon becomes ineffective.

 What is activated carbon? Activated carbon is a porous adsorbent made from carbonaceous materials such as coconut shells and coal through high-temperature activation. It has a highly developed internal pore structure; one gram of activated carbon can have a specific surface area of ​​up to 1000 square meters, equivalent to the size of a tennis court. This structure effectively adsorbs impurities in water and odors in the air.