Chemical filtration is a process used to remove impurities and contaminants from liquids or gases by using specific materials that react with or absorb unwanted substances. This method often employs materials like activated carbon or zeolites, which have a high surface area and can trap chemicals, odors, and pollutants effectively. In various applications, such as water treatment and air purification, chemical filtration helps improve the quality of the environment. For instance, in aquariums, chemical filters can eliminate harmful toxins, while in HVAC systems, they can reduce indoor air pollutants, contributing to healthier living spaces.