An interesting video about salinity gradients.
It is the less known energy source from the sea and is also called osmotic power. The video explains different stages in the evolution of osmotic power, since the early days of pressure retarded osmosis (PRO) to the latest developments in nanotechnology. Two practical methods concerning membrane technology are currently being researched: the reverse electrodialysis (RED) method and pressure retarded osmosis (PRO). Both technologies are dependent on the semi permeable membrane. A semi-permeable membrane is selective in its permeability, i.e. only specific substances can pass through the membrane. Both processes rely on ion-specific membranes. The technology RED as well as PRO is in the research and development phase.
Watch the video to discover more, click here.