ABSTRACT
Four interesting yet important areas where vacuum bubbling can be effectively applied are suggested: process degassing, fuel degassing, artificial gills (underwater respiration), and desalination. Among these, degassing using vacuum bubbling enables a high level of degassing based on low energy, simple structure, and clear operating principles, and the level can be equivalent or even superior to that of thermal deaerators. This application field can be viewed as being ready for commercialization, with the technical readiness required for applications for industry. Degassing of fuel and extraction of high-oxygen-content air as a result of degassing are both interesting topics and appear that they can also be brought up if necessary. Lastly, the application of vacuum desalination introduced is still an immature technology, but the key is to achieve mass evaporation through mechanical work under vacuum conditions. The vacuum desalination technology integrated with the previously mentioned degassing as a pretreatment process is very promising, and it seems just a matter of time before it appears in industry.
