Membranes for Salinity Gradient Energy Production

1981 ◽  
pp. 89-90
Author(s):  
K. L. LEE ◽  
R. W. BAKER ◽  
H. K. LONSDALE
Keyword(s):  
Energy Production ◽  
Salinity Gradient ◽  
Gradient Energy

scholarly journals Modeling and Optimization of Membrane Process for Salinity Gradient Energy Production

Separations ◽  
2021 ◽  
Vol 8 (5) ◽  
pp. 64
Author(s):  
Lianfa Song
Keyword(s):  
Osmotic Pressure ◽  
Energy Production ◽  
Salinity Gradient ◽  
Water Flux ◽  
Hydraulic Pressure ◽  
Semipermeable Membranes ◽  
Pressure Retarded Osmosis ◽  
Higher Power ◽  
Gradient Energy ◽  
Breakeven Point

When hydraulic pressure was added on the feed side of the membrane in the otherwise conventional pressure retarded osmosis (PRO) process, the production rate of the salinity gradient energy could be significantly increased by manipulating the hydraulic pressures on both sides of the membrane. With hydraulic pressure added on the feed side of the membrane, much higher water flux could be obtained than that under the osmotic pressure of the same value. The osmotic pressure of the draw solution, instead of drawing water through the membrane, was mainly reserved to increase the hydraulic pressure of the permeate. In this way, orders of magnitude higher power density than that in the conventional PRO can be obtained with the same salinity gradient. At the optimal conditions, it was demonstrated that the energy production rates that were much higher than the economical breakeven point could be obtained from the pair of seawater and freshwater with the currently available semipermeable membranes.

High performance asymmetric capacitive mixing with oppositely charged carbon electrodes for energy production from salinity differences

2017 ◽  
Vol 5 (38) ◽  
pp. 20374-20380 ◽  
Author(s):  
Fei Zhan ◽  
Gang Wang ◽  
Tingting Wu ◽  
Qiang Dong ◽  
Yulan Meng ◽  
...  
Keyword(s):  
Power Density ◽  
Energy Production ◽  
High Performance ◽  
Salinity Gradient ◽  
Average Power ◽  
Carbon Electrodes ◽  
Voltage Rise ◽  
Gradient Energy ◽  
Oppositely Charged

Asymmetric capacitive mixing (Asy-CapMix) for extracting salinity gradient energy is realized by using oppositely charged carbon electrodes. High performance in terms of voltage rise and average power density is achieved.

Membrane research for salinity gradient energy production. Final report

1978 ◽  
Author(s):  
H. K. Lonsdale ◽  
R. W. Baker ◽  
K. L. Lee ◽  
K. L. Smith
Keyword(s):  
Energy Production ◽  
Salinity Gradient ◽  
Final Report ◽  
Gradient Energy

Reverse electrodialysis in bilayer nanochannels: salinity gradient-driven power generation

2018 ◽  
Vol 20 (10) ◽  
pp. 7295-7302 ◽  
Author(s):  
Rui Long ◽  
Zhengfei Kuang ◽  
Zhichun Liu ◽  
Wei Liu
Keyword(s):  
Power Generation ◽  
Energy Harvesting ◽  
Salinity Gradient ◽  
Reverse Electrodialysis ◽  
Gradient Energy ◽  
Ion Transportation

To evaluate the possibility of nano-fluidic reverse electrodialysis (RED) for salinity gradient energy harvesting, we consider the behavior of ion transportation in a bilayer cylindrical nanochannel with different sized nanopores connecting two reservoirs at different NaCl concentrations.

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