Multi-stage reverse electrodialysis: Strategies to harvest salinity gradient energy

2019 ◽  
Vol 183 ◽  
pp. 803-815 ◽  
Author(s):  
Junyong Hu ◽  
Shiming Xu ◽  
Xi Wu ◽  
Debing Wu ◽  
Dongxu Jin ◽  
...  
Keyword(s):  
Salinity Gradient ◽  
Reverse Electrodialysis ◽  
Multi Stage ◽  
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 Life cycle assessment of salinity gradient energy recovery by reverse electrodialysis in a seawater reverse osmosis desalination plant

2020 ◽  
Vol 4 (8) ◽  
pp. 4273-4284 ◽  
Author(s):  
Carolina Tristán ◽  
Marta Rumayor ◽  
Antonio Dominguez-Ramos ◽  
Marcos Fallanza ◽  
Raquel Ibáñez ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Energy Recovery ◽  
Large Scale ◽  
Salinity Gradient ◽  
Reverse Electrodialysis ◽  
Desalination Plant ◽  
Gradient Energy ◽  
Seawater Reverse Osmosis ◽  
Reverse Osmosis Desalination

LCA of lab-scale and large-scale stand-alone RED stacks and an up-scaled RED system co-located with a SWRO desalination plant.

scholarly journals Chemical and Energy Recovery Alternatives in SWRO Desalination through Electro-Membrane Technologies

2021 ◽  
Vol 11 (17) ◽  
pp. 8100
Author(s):  
Marta Herrero-Gonzalez ◽  
Raquel Ibañez
Keyword(s):  
Renewable Energy ◽  
Salinity Gradient ◽  
Raw Material ◽  
Reverse Electrodialysis ◽  
Bipolar Membranes ◽  
Impact Reduction ◽  
Acid And Base ◽  
Readiness Level ◽  
Gradient Energy ◽  
Membrane Technologies

Electro-membrane technologies are versatile processes that could contribute towards more sustainable seawater reverse osmosis (SWRO) desalination in both freshwater production and brine management, facilitating the recovery of materials and energy and driving the introduction of the circular economy paradigm in the desalination industry. Besides the potential possibilities, the implementation of electro-membrane technologies remains a challenge. The aim of this work is to present and evaluate different alternatives for harvesting renewable energy and the recovery of chemicals on an SWRO facility by means of electro-membrane technology. Acid and base self-supply by means of electrodialysis with bipolar membranes is considered, together with salinity gradient energy harvesting by means of reverse electrodialysis and pH gradient energy by means of reverse electrodialysis with bipolar membranes. The potential benefits of the proposed alternatives rely on environmental impact reduction is three-fold: (a) water bodies protection, as direct brine discharge is avoided, (b) improvements in the climate change indicator, as the recovery of renewable energy reduces the indirect emissions related to energy production, and (c) reduction of raw material consumption, as the main chemicals used in the facility are produced in-situ. Moreover, further development towards an increase in their technology readiness level (TRL) and cost reduction are the main challenges to face.

Experimental investigation on dye wastewater treatment with reverse electrodialysis reactor powered by salinity gradient energy

Desalination ◽  
2020 ◽  
Vol 495 ◽  
pp. 114541 ◽  
Author(s):  
Xu Shiming ◽  
Leng Qiang ◽  
Jin Dongxu ◽  
Wu Xi ◽  
Xu Zhijie ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Wastewater Treatment ◽  
Salinity Gradient ◽  
Dye Wastewater ◽  
Reverse Electrodialysis ◽  
Gradient Energy

Recovery of salinity gradient energy in desalination plants by reverse electrodialysis

Desalination ◽  
2020 ◽  
Vol 496 ◽  
pp. 114699 ◽  
Author(s):  
C. Tristán ◽  
M. Fallanza ◽  
R. Ibáñez ◽  
I. Ortiz
Keyword(s):  
Salinity Gradient ◽  
Reverse Electrodialysis ◽  
Gradient Energy ◽  
Desalination Plants

Hydrodynamic slip enhanced nanofluidic reverse electrodialysis for salinity gradient energy harvesting

Desalination ◽  
2020 ◽  
Vol 477 ◽  
pp. 114263 ◽  
Author(s):  
Rui Long ◽  
Yanan Zhao ◽  
Zhengfei Kuang ◽  
Zhichun Liu ◽  
Wei Liu
Keyword(s):  
Energy Harvesting ◽  
Salinity Gradient ◽  
Reverse Electrodialysis ◽  
Hydrodynamic Slip ◽  
Gradient Energy

scholarly journals Performance of Reverse Electrodialysis System for Salinity Gradient Energy Generation by Using a Commercial Ion Exchange Membrane Pair with Homogeneous Bulk Structure

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 814
Author(s):  
Esra Altıok ◽  
Tuğçe Zeynep Kaya ◽  
Enver Güler ◽  
Nalan Kabay ◽  
Marek Bryjak
Keyword(s):  
Ion Exchange ◽  
Salinity Gradient ◽  
Anion Exchange Membrane ◽  
Type Ii ◽  
Feed Velocity ◽  
Reverse Electrodialysis ◽  
Gradient Energy ◽  
Bulk Structure ◽  
Exchange Membrane

Salinity gradient energy is a prominent alternative and maintainable energy source, which has considerable potential. Reverse electrodialysis (RED) is one of the most widely studied methods to extract this energy. Despite the considerable progress in research, optimization of RED process is still ongoing. In this study, effects of the number of membrane pairs, ratio of salinity gradient and feed velocity on power generation via the reverse electrodialysis (RED) system were investigated by using Fujifilm cation exchange membrane (CEM Type 2) and FujiFilm anion exchange membrane (AEM Type 2) ion exchange membranes. In the literature, there is no previous study based on a RED system equipped with Fujifilm AEM Type II and CEM Type II membranes that have homogeneous bulk structure. Using 400 µm of intermembrane distance, maximum obtainable power density by 5 pairs of Fujifilm membranes at 1:45 salinity ratio and with a linear flow rate of 0.833 cm/s was 0.426 W/m2.

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