An absorption barrier is a physical barrier that is designed to absorb or filter out certain substances or contaminants from a particular environment. Absorption barriers are often used to protect the environment from pollution or to remediate contaminated sites. They may be made of materials such as activated carbon clay, or soil, which have the ability to absorb and trap certain substances, such as oil, heavy metals, or pesticides.
An oil spill cleanup crew might use an absorption barrier to contain and absorb spilled oil from a river or ocean. The barrier might be made of a material like polypropylene, which can absorb oil but not water, and can be easily removed and replaced as needed.
An agricultural field may be treated with an absorption barrier to prevent pesticides from leaching into groundwater. The barrier might be made of clay or other materials that can absorb and hold the pesticides, preventing them from entering the soil and potentially contaminating nearby water sources.
An industrial site that is contaminated with hazardous chemicals might use an absorption barrier to prevent the chemicals from spreading or entering the environment. The barrier might be made of activated carbon which can absorb and trap a wide range of chemical contaminants, or other materials that are specifically designed to absorb certain types of contaminants