Molecular Simulation of Pressure Retarded Osmosis for Salinity Gradient Energy Harvesting

2021 ◽  
Author(s):  
Zuoqing Luo ◽  
Ji Li ◽  
Zhengfei Kuang ◽  
Rui Long ◽  
Zhichun Liu ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Molecular Simulation ◽  
Salinity Gradient ◽  
Pressure Retarded Osmosis ◽  
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.

Review—Technologies and Materials for Water Salinity Gradient Energy Harvesting

2021 ◽  
Author(s):  
Xiong-Wei Han ◽  
Wei-Bin Zhang ◽  
Xue-Jing Ma ◽  
Xia Zhou ◽  
Qiang Zhang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Salinity Gradient ◽  
Water Salinity ◽  
Gradient Energy

scholarly journals Porous Ti3C2Tx MXene Membranes for Highly Efficient Salinity Gradient Energy Harvesting

ACS Nano ◽  
2022 ◽  
Author(s):  
Seunghyun Hong ◽  
Jehad K. El-Demellawi ◽  
Yongjiu Lei ◽  
Zhixiong Liu ◽  
Faisal Al Marzooqi ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Salinity Gradient ◽  
Highly Efficient ◽  
Gradient Energy

scholarly journals Feasibility of Pressure-Retarded Osmosis for Electricity Generation at Low Temperatures

Membranes ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 556
Author(s):  
Elham Abbasi-Garravand ◽  
Catherine N. Mulligan
Keyword(s):  
Power Density ◽  
Membrane Fouling ◽  
Low Temperatures ◽  
Sea Water ◽  
Salinity Gradient ◽  
Operating Conditions ◽  
Pressure Retarded Osmosis ◽  
Water Transportation ◽  
Gradient Energy ◽  
Temperature Impact

A membrane-based technique for production of pressure-retarded osmosis (PRO) is salinity gradient energy. This sustainable energy is formed by combining salt and fresh waters. The membrane of the PRO process has a significant effect on controlling the salinity gradient energy or osmotic energy generation. Membrane fouling and operating conditions such as temperature have an extreme influence on the efficiency of the PRO processes because of their roles in salt and water transportation through the PRO membranes. In this study, the temperature impact on the power density and the fouling of two industrial semi-permeable membranes in the PRO system was investigated using river and synthetic sea water. Based on the findings, the power densities were 17.1 and 14.2 W/m2 at 5 °C for flat sheet and hollow fiber membranes, respectively. This is the first time that research indicates that power density at low temperature is feasible for generating electricity using PRO processes. These results can be promising for regions with high PRO potential that experience low temperatures most of the year.

scholarly journals Environmental Assessment of the Impacts and Benefits of a Salinity Gradient Energy Pilot Plant

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3252
Author(s):  
Etzaguery Marin-Coria ◽  
Rodolfo Silva ◽  
Cecilia Enriquez ◽  
M. Luisa Martínez ◽  
Edgar Mendoza
Keyword(s):  
Environmental Impacts ◽  
Salinity Gradient ◽  
Small Scale ◽  
Ecosystem Responses ◽  
Pressure Retarded Osmosis ◽  
Stage Scheme ◽  
Gradient Energy ◽  
Inducing Factors ◽  
Local Impacts ◽  
Construction Operation

Although the technologies involved in converting saline gradient energy (SGE) are rapidly developing, few studies have focused on evaluating possible environmental impacts. In this work, the environmental impacts of a hypothetical 50 kW RED plant installed in La Carbonera Lagoon, Yucatan, Mexico, are addressed. The theoretical support was taken from a literature review and analysis of the components involved in the pressure retarded osmosis (PRO) and reverse electrodialysis (RED) technologies. The study was performed under a three-stage scheme (construction, operation, and dismantling) for which the stress-inducing factors that can drive changes in environmental elements (receptors) were determined. In turn, the possible modifications to the dynamics of the ecosystem (responses) were assessed. Since it is a small-scale energy plant, only local impacts are expected. This study shows that a well-designed SGE plant can have a low environmental impact and also be of benefit to local ecotourism and ecosystem conservation while contributing to a clean, renewable energy supply. Moreover, the same plant in another location in the same system could lead to huge modifications to the flows and resident times of the coastal lagoon water, causing great damage to the biotic and abiotic environment.

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