Oil-water separation is the process of separating oil and suspended solids from the produced water of production facilities and from the wastewater of oil refineries, petrochemical plants, and natural-gas processing plants. Various methods exist to separate oil and water, but flotation is typically the first method in the separation process. In flotation, gas bubbles attach to oil droplets in the water to increase their rise rate. Once on the surface of the water, the oil can be skimmed off, removing a large portion of the free oil in the water. Moleaer's gas-injection technology enhances this process by delivering high volumes of nanobubbles into the water. Nanobubbles exhibit unique properties when compared to larger bubbles that make them an ideal fit for oil-water separation.