Apzem biological scrubber employs microorganisms to break down and neutralize pollutants, such as volatile organic compounds (VOCs) and odorous gases, through natural biological reactions. Air containing pollutants is passed through a column or bed where it comes into contact with the microbial culture. The microorganisms metabolize the pollutants, effectively cleaning the air before it is released into the environment. The Apzem biological scrubber is known for its eco-friendly approach.