What are the advantages of vibration over crossflow filtration?
High shear, for a start. Also, the shear is where it matters – at the membrane surface and not within the rest of the process fluid, or suspension. When dealing with shear sensitive materials this is very important. For example, in the filtration of beer low temperatures may be better – in crossflow high shear is provided by the pump, leading to high heat input and possible damage of the cells. Thus, heat has to be taken out of the system and the filtration may become more difficult due to the finer particles formed in the pump. In vibration driven filtration both of these problems are removed!
