Which methods are commonly used to remove particulate matter (PM) in waste processing?

The methods associated with the removal of particulate matter (PM) in waste processing are designed to effectively capture or separate solid particles from liquids or gases. Among the listed options, absorption and adsorption are commonly employed techniques.

Absorption involves the process where particles or gases dissolve or take in another substance, thereby reducing the concentration of particulate matter in the medium. This method is often used in various industrial applications to capture pollutants from gases or liquids.

Adsorption, on the other hand, refers to the process where particles adhere to the surface of a solid material, forming a layer of adsorbent on the surface. This technique is highly effective for separating pollutants or particulates from air or water streams, as it utilizes solid materials that can attract and hold onto the PM.

These two methods are particularly relevant in waste processing environments, wherein managing particulate matter is crucial for maintaining air and water quality and ensuring compliance with environmental regulations.

While the other methods listed can be useful for different applications, they might not specifically target particulate matter as effectively as absorption and adsorption do. For instance, filtration and sedimentation are more focused on the physical separation of particles, while distillation and evaporation pertain to separation based on differences in boiling points, which is not primarily aimed at particulate matter