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.

scholarly journals Custom-Made Ion Exchange Membranes at Laboratory Scale for Reverse Electrodialysis

Membranes ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 145 ◽  
Author(s):  
Liliana Villafaña-López ◽  
Daniel M. Reyes-Valadez ◽  
Oscar A. González-Vargas ◽  
Victor A. Suárez-Toriello ◽  
Jesús S. Jaime-Ferrer
Keyword(s):  
Ion Exchange ◽  
Cation Exchange ◽  
Anion Exchange ◽  
Structural Modification ◽  
Anion Exchange Membrane ◽  
Laboratory Scale ◽  
Cation Exchange Membrane ◽  
Ion Exchange Membranes ◽  
Reverse Electrodialysis ◽  
Exchange Membrane

Salinity gradient power is a renewable, non-intermittent, and neutral carbon energy source. Reverse electrodialysis is one of the most efficient and mature techniques that can harvest this energy from natural estuaries produced by the mixture of seawater and river water. For this, the development of cheap and suitable ion-exchange membranes is crucial for a harvest profitability energy from salinity gradients. In this work, both anion-exchange membrane and cation-exchange membrane based on poly(epichlorohydrin) and polyvinyl chloride, respectively, were synthesized at a laboratory scale (255 c m 2) by way of a solvent evaporation technique. Anion-exchange membrane was surface modified with poly(ethylenimine) and glutaraldehyde, while cellulose acetate was used for the cation exchange membrane structural modification. Modified cation-exchange membrane showed an increase in surface hydrophilicity, ion transportation and permselectivity. Structural modification on the cation-exchange membrane was evidenced by scanning electron microscopy. For the modified anion exchange membrane, a decrease in swelling degree and an increase in both the ion exchange capacity and the fixed charge density suggests an improved performance over the unmodified membrane. Finally, the results obtained in both modified membranes suggest that an enhanced performance in blue energy generation can be expected from these membranes using the reverse electrodialysis technique.

scholarly journals Ultra-thin ion exchange film on the ceramic supporter for output power improvement of reverse electrodialysis

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Dong Hyeon Jung ◽  
Eui Don Han ◽  
Byeong Hee Kim ◽  
Young Ho Seo
Keyword(s):  
Ion Exchange ◽  
Electrical Resistance ◽  
Power Source ◽  
Energy Development ◽  
Anion Exchange Membrane ◽  
Ion Exchange Membranes ◽  
Reverse Electrodialysis ◽  
Thin Polymer ◽  
Output Characteristics ◽  
Exchange Membrane

AbstractIn this study, ultra-thin ion exchange film on the ceramic supporter (UTFCS) composed of thin polymer layer and nanoporous ceramic layer with low electrical resistance was developed. The electrical properties and permselectivity of UTFCSs were evaluated and the properties of UTFCSs were compared with other ion exchange membranes. Fabricated UTFCSs were applied to a reverse electrodialysis (RED) system to evaluate the output characteristics and compared with other ion exchange membranes. The power density of RED using UTFCS was 36.6 mW/m2, which was 8% higher than that of a commercial anion exchange membrane. In addition, possibility as power source was experimentally verified by driving LEDs. The proposed UTFCS can be applied not only to RED but also to energy development such as fuel cells and microbial cells.

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.

In-situ Ion-Exchange Preparation and Topological Transformation of Trimetal-Organic Frameworks for Efficient Electrocatalytic Water Oxidation

2021 ◽  
Author(s):  
Bao Yu Xia ◽  
Ya Yan ◽  
Xianying Wang ◽  
Yuan Kong ◽  
Jiangwei Zhang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Ion Exchange ◽  
Anion Exchange ◽  
Water Oxidation ◽  
Water Electrolysis ◽  
Anion Exchange Membrane ◽  
Topological Transformation ◽  
Exchange Membrane ◽  
Kinetics Of

Anion exchange membrane water electrolysis (AEMWE) with non-precious catalysts offers a promising route for industrial hydrogen production. However, the sluggish kinetics of anodic water oxidation hinder its efficiency and cost....

Determination of ion-exchange equilibrium coefficient for a MA-41 anion-exchange membrane in sodium carbonate/hydrocarbonate solutions

Desalination ◽  
2002 ◽  
Vol 149 (1-3) ◽  
pp. 459-464 ◽  
Author(s):  
Elena Volodina ◽  
Yurii Senik ◽  
Oksana Basova ◽  
Natalia Pismenskaya ◽  
Victor Nikonenko ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Sodium Carbonate ◽  
Anion Exchange Membrane ◽  
Exchange Equilibrium ◽  
Exchange Membrane
Sign in / Sign up

Export Citation Format

Share Document