A Brief Review about Salinity Gradient Energy

Increasing the greenhouse gases concentration, climate change and the global concerns about the fossil fuels pollutants lead scientists and researcher toward the energy production by the renewable energy sources. Replaced the energy generation sources from the fossil fuels to the renewable energy sources is one of the important project that scientists and researchers has been worked and the good potentials of this sources of energy make them to most studies and researchers from this important. Salinity gradient energy or blue energy is an of the high potential energy sources that placed in renewable energy’s list. The salinity gradient energy can be one of the important sources of the renewable energy to electricity generation for global electrical demand in future. When saline and fresh water mixes the Gibbs free energy is released. This energy could be used for generation of electrical power by some methods. There are two promising techniques for the generation energy from salinity gradient including RED and PRO methods. According the estimates of power available in the world salinity gradients energy are estimated between 1.4 and 2.6 TW, this amount of power generation in comparison to other marine renewable energy sources is a good potential. This paper is over review for salinity gradient energy, RED and PRO methods.