Activated Carbon Filtration
Activated carbon has a unique, highly porous structure with an enormous surface area. When water passes through an activated carbon filter, contaminants are removed through a process called adsorption. Chlorine, which is commonly added to tap water for disinfection, is easily adsorbed by the carbon. Additionally, organic chemicals, pesticides, and some heavy metals are also attracted to the surface of the activated carbon, thus improving the taste, odor, and safety of the water.
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One significant trend in the future is the development of more efficient and advanced filtration technologies. Currently, reverse osmosis (RO), ultrafiltration (UF), and activated carbon filtration are widely used. In the future, we may see the emergence of new types of membranes with even smaller pore sizes and higher selectivity. These membranes will be able to remove a broader range of contaminants, including emerging pollutants such as microplastics and pharmaceutical residues. For example, scientists are researching nanomaterials that can be used to create membranes with unique properties. Nanotubes, for instance, could potentially be integrated into membranes to enhance their filtering capabilities, allowing for more precise separation of impurities from water.