Editing Flocculation (section)

=== Surface chemistry ===
In [[colloid chemistry]], flocculation refers to the process by which fine [[particulate]]s are caused to clump together into a floc. The floc may then float to the top of the liquid (creaming), [[settling|settle]] to the bottom of the liquid ([[sedimentation]]), or be readily [[filtration|filtered]] from the liquid. Flocculation behavior of soil colloids is closely related to freshwater quality. High dispersibility of soil colloids not only directly causes turbidity of the surrounding water but it also induces [[eutrophication]] due to the adsorption of nutritional substances in rivers and lakes and even boats under the sea.