What is Decantation in Chemistry? Decantation refers to a simple physical separation process in chemistry where a liquid is carefully poured off from a mixture, leaving behind insoluble solids or a heavier immiscible liquid based on density difference. Examples of decantation When decanting the wine, the sediments are extracted and the wine is oxygenated. Wastewater treatment. Dirty water from the sewage system of cities is generally denser than clean water, since it is full of organic matter and other suspended substances. Therefore, an initial process of decanting and filtering the dirt can be carried out before returning the water to the seas and rivers. Thus, cleaner water is returned to the environment, reducing environmental ... Decantation is the process of removing insoluble solid particles from a liquid or separating two immiscible liquids with differing densities. In layman's terms, decantation is the hand separation of liquid from sediments or another immiscible liquid having a different density. For instance, We've all seen that if we leave a bucket full of water mixed with sand or mud undisturbed for a short period of time, most of the insoluble particles sink to the bottom of the bucket owing to the action ... Decantation is the process of separating two immiscible liquids or a solid-liquid mixture by pouring the top layer. Learn how decantation works, its types, applications, advantages and disadvantages with examples and practice problems.