OSAT Biological Sciences (110) Practice Exam 2025 – Complete Study Resource

The process used to remove dissolved gases from water by bubbling air through it is air stripping. This method involves passing air through the water, which facilitates the transfer of dissolved gases from the liquid phase into the gas phase. As air bubbles rise through the water, they create a surface area for the gases to escape, effectively reducing their concentration in the water.

Air stripping is particularly effective for removing volatile organic compounds (VOCs) and some gases, including ammonia and carbon dioxide, which may need to be eliminated for reasons related to water quality and safety. The technique is commonly used in water treatment facilities to improve the quality of drinking water by ensuring that harmful gases are removed before it reaches consumers.

Filtration, on the other hand, mainly targets solid particles and impurities, while distillation involves heating water to create steam and then cooling it to collect the liquid, which separates components based on boiling points. Oxidation refers to a chemical reaction that involves the transfer of electrons, which does not pertain to the process of removing gases through bubbling.