Filtration methods are techniques used to separate solids from liquids or gases by passing the mixture through a filter. Common types of filters include paper filters, membrane filters, and sand filters. These methods are widely used in various applications, such as water purification, air quality control, and laboratory processes. In addition to physical filtration, there are also chemical filtration methods that involve the use of adsorbents, like activated carbon, to remove impurities. Filtration is essential in industries such as pharmaceuticals, food and beverage, and environmental science to ensure product quality and safety.