Seawater Desalinationusing Fish Skin Membrane
Fish skin offers excellent ability to osmo-regulate in both fresh and salty water.Because of its lack of current
research in desalination applications, it is aimed to investigate the performance of fish skin as a membrane in seawater
desalination. The skin of Tilapia fish is used tested in this work for such purpose. The object is to find the permeability rate
of this membrane and its capability to desalinate sea water and to determine the flow direction of water. The testing
procedure consisted of placing the fish skin between two samples of water with different salt concentrations in a U-tube.
Salty water with almost sea salt concentration was placed on one side whereas distilled water was placed on the other side of
the membrane. Different parameters were investigated to study the effect of skin on seawater desalination including
temperature gradient and flipping the water facing the fish skin. It is proven in this work that tilapia skin as a seawater
desalination membrane is promising, and should be studied further to investigate the possibility of using bio-inspired
membranes in different applications.
Key words - Tilapia skin, Sea water, Membrane, Desalination.