Influenza delle onde acustiche sulla crescita delle microalghe (sp. Scenedesmus obliquus)

The aim of the PhD thesis was to study the effects of acoustic stimulation on the rate of growth of the microalgae Scenedesmus obliquus. This study required a long and complex work aimed to develop innovative means to detect and record algal growth, control and continuous monitoring of microalgal cultures in a serial photobioreactors (synchronous stirring system, automated serial and crops in the twelve fbr low acoustic impact) not to interfere with the delivered sound waves. The construction of photobioreactors of specific geometry and a material particularly efficient in the transmission of acoustic waves and electromagnetic radiation, together with innovative and quick measurement techniques to follow the time course of microalgae growth, has been a large part of the thesis work. In conclusion, the experimental setup and easily scalable fbr, could be an ideal form innovative, highly efficient (with the acoustic stimulation they increased the rate of growth of microalgae even of 320 %) and innovative system for Scenedesmus obliquus cultivation and energy conversion, for instance, in a cement plant.