Membrane-based indirect power generation technologies for harvesting salinity gradient energy - A review

Desalination ◽  
2022 ◽  
Vol 525 ◽  
pp. 115485
Author(s):  
Yanmei Jiao ◽  
Linhui Song ◽  
Cunlu Zhao ◽  
Yi An ◽  
Weiyu Lu ◽  
...  
Keyword(s):  
Power Generation ◽  
Salinity Gradient ◽  
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.

scholarly journals The Combination of 2D Layered Graphene Oxide and 3D Porous Cellulose Heterogeneous Membranes for Nanofluidic Osmotic Power Generation

Molecules ◽  
2021 ◽  
Vol 26 (17) ◽  
pp. 5343
Author(s):  
Pan Jia ◽  
Xinyi Du ◽  
Ruiqi Chen ◽  
Jinming Zhou ◽  
Marco Agostini ◽  
...  
Keyword(s):  
Power Generation ◽  
Graphene Oxide ◽  
Salinity Gradient ◽  
High Surface ◽  
Energy Conversion Efficiency ◽  
Research Field ◽  
Heterogeneous Membrane ◽  
High Efficient ◽  
Potential Applications ◽  
Gradient Energy

Salinity gradient energy, as a type of blue energy, is a promising sustainable energy source. Its energy conversion efficiency is significantly determined by the selective membranes. Recently, nanofluidic membrane made by two-dimensional (2D) nanomaterials (e.g., graphene) with densely packed nanochannels has been considered as a high-efficient membrane in the osmotic power generation research field. Herein, the graphene oxide-cellulose acetate (GO–CA) heterogeneous membrane was assembled by combining a porous CA membrane and a layered GO membrane; the combination of 2D nanochannels and 3D porous structures make it show high surface-charge-governed property and excellent ion transport stability, resulting in an efficient osmotic power harvesting. A power density of about 0.13 W/m2 is achieved for the sea–river mimicking system and up to 0.55 W/m2 at a 500-fold salinity gradient. With different functions, the CA and GO membranes served as ion storage layer and ion selection layer, respectively. The GO–CA heterogeneous membrane open a promising avenue for fabrication of porous and layered platform for wide potential applications, such as sustainable power generation, water purification, and seawater desalination.

Construction of a Liquid Membrane Cell for Power Generation Based on Salinity Gradient Energy Conversion

2020 ◽  
Vol 49 (9) ◽  
pp. 1081-1083
Author(s):  
Yusuke Yamada ◽  
Yuki Kitazumi ◽  
Kenji Kano ◽  
Osamu Shirai
Keyword(s):  
Power Generation ◽  
Energy Conversion ◽  
Liquid Membrane ◽  
Salinity Gradient ◽  
Gradient Energy ◽  
Membrane Cell

Stable Ti3C2Tx MXene–Boron Nitride Membranes with Low Internal Resistance for Enhanced Salinity Gradient Energy Harvesting

ACS Nano ◽  
2021 ◽  
Author(s):  
Guoliang Yang ◽  
Dan Liu ◽  
Cheng Chen ◽  
Yijun Qian ◽  
Yuyu Su ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Boron Nitride ◽  
Salinity Gradient ◽  
Internal Resistance ◽  
Gradient Energy

Electrokinetic Power Generation by Forward Osmosis

2012 ◽  
Author(s):  
Kar Cherng Hon ◽  
Chun Yang ◽  
Seow Chay Low
Keyword(s):  
Power Generation ◽  
Salinity Gradient ◽  
Forward Osmosis ◽  
Streaming Potential ◽  
Nacl Solution ◽  
Direct Power ◽  
Concentration Difference ◽  
Permeable Membrane ◽  
Flat Sheet ◽  
Novel Method

In this paper, an innovative direct power generation technique from salinity gradient is proposed and demonstrated. The basis of this novel method encompasses forward osmosis (FO) and electrokinetic (EK) principles. Tapping the concentration difference between seawater and river fresh water, forward osmosis (FO) is utilized to allow for spontaneously transporting water across a semi-permeable membrane. The flow of water is then directed towards array of microchannels in the form of porous medium where power is produced from the electrokinetical streaming potential. Experimentally, NaCl solution and DI water were used to model as seawater and fresh river water, respectively. Both glass and polymer based porous media and commercial flat sheet FO membranes were employed herein. Results show power density could reach the order of 101W/m2. Having features of ease of fabrication, simple configuration and no mechanical moving parts, this method provides a feasible mean to harvest enormous energy from salinity gradient. Thus the proposed technique could contribute greatly to renewable energy and towards sustainable future.

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