Clean power generation from salinity gradient using reverse electrodialysis technologies: Recent advances, bottlenecks, and future direction

Chae, Soryong; Kim, Han−Ki; Hong, Jin Gi; Jang, Jaewon; Higa, Mitsuru; Pishnamazi, Mohammad; Choi, Jiyeon; Walgama, Ramali C.; Bae, Chulsung; Kim, In Soo; Park, Jin-Soo

doi:10.1016/j.cej.2022.139482

Cited by 30 publications

(19 citation statements)

References 145 publications

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“…The development of blue energy techniques requires the discovery of efficient membranes that are selective and avoid mixing. At this stage, the discoveries of recent years give grounds for optimism. , Sulfonated poly(ether ether ketone) (SPEEK) membranes are of interest. − These articles claim that they will cost less than 10 € per m 2 and that they are selective. Note that they have not yet been commercialized.…”

Section: Resultsmentioning

confidence: 99%

A Strategy for Power Density Amelioration of Capacitive Reverse Electrodialysis Systems with a Single Membrane

Wu,

Brahmi,

Colin

2023

Environ. Sci. Technol.

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Blue energy refers to the osmotic energy released while combining solutions of different salinity. Recently, singlemembrane-based capacitive reverse electrodialysis cells were developed for blue energy harvesting. The performance of these cells is limited by the low ion-electron flux transfer efficiency of the capacitive electrodes in the current operating regimes. To optimize it, we point out an original boosting strategy of using a secondary voltage source E 0 placed in series with the capacitive concentration cell. The net recovered power is defined as the difference between the power dissipated in the load resistor and the power supplied by the secondary voltage. Experimental results indicate a maximum power density of 5.26 W•m −2 (where the salinity difference is 0.17 and 5.13 M), which corresponds to a 59.8% increase compared with its power density of 3.29 W•m −2 without boosting strategy. A good agreement on power density is reached for theoretical simulations and experimental results. Influential factors are systematically studied to further reveal the boosting strategy.

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Section: Resultsmentioning

confidence: 99%

A Strategy for Power Density Amelioration of Capacitive Reverse Electrodialysis Systems with a Single Membrane

Wu,

Brahmi,

Colin

2023

Environ. Sci. Technol.

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“…Fouling is one of the most common problems in electrodialysis (ED) using ion exchange membranes (IEMs). In general, fouling is caused by the precipitation of foulants such as organics, colloids and biomass into IEMs and/or onto the surface of IEMs [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. The fouling causes a decrease in the transport flux of ions due to fouling complications of the membrane, an increase in the membrane resistance and a loss in selectivity and thus affects negatively membrane properties and performance [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…A deep insight into the behavior of membrane fouling could facilitate the development of the technology of membrane fouling mitigation. Up to now, several mitigation techniques to mitigate the aforementioned IEMs’ fouling were introduced such as physical/mechanical, electrochemical and chemical cleaning methods [ 14 , 18 , 22 , 23 , 24 ]. However, not all the methods are effective in the mitigation of IEMs’ fouling.…”

Section: Introductionmentioning

confidence: 99%

Fouling and Mitigation Behavior of Foulants on Ion Exchange Membranes with Surface Property in Reverse Electrodialysis

Akter

Park

2023

Membranes

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In this study, two different types of ion exchange membranes are used to investigate the tendency of membrane fouling with respect to surface roughness and hydrophilicity. Commercially available membranes reinforced by electrospun nanofiber have rough and hydrophilic surfaces, and lab-made pore-filling membranes exhibit a smooth and hydrophobic surface. Three different organic surfactants (i.e., cationic, anionic and non-ionic surfactants) are chosen as foulants with similar molecular weights. It is confirmed that membrane fouling by electrical attraction mainly occurs, in which anionic and cationic foulants influence anion and cation exchange membranes, respectively. Thus, less fouling is obtained on both membranes for the non-charged foulant. The membranes with a rough surface show a higher fouling tendency than those with a smooth surface in the short-term continuous fouling tests. However, during the cyclic operations of fouling and mitigation of the commercially available membranes, the irregularities of a rough membrane surface cause a rapid increase in electrical resistance from the beginning of fouling due to excessive adsorption on the surface, but the fouling is easily mitigated due to the hydrophilic surface. On the other hand, the membranes with a smooth surface show alleviated fouling from the beginning of fouling, but the irreversible fouling occurs as foulants accumulate on the hydrophobic surface which causes membrane fouling to be favorable.

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“…It has been estimated that the global potential for harvesting osmotic energy is approximately 1TW. In comparison to other forms of energy, such as solar and wind power, osmotic energy offers several advantages including minimal daily fluctuations, lower costs associated with large‐scale facilities, and reduced greenhouse gas emissions [2–4] . Methods previously discussed for energy extraction include pressure‐retarded osmosis (PRO), reverse electro‐dialysis (RED), concentration‐based electrochemical cells, and devices that harness disparities in vapor pressure [1] .…”

Section: Introductionmentioning

confidence: 99%

“…In comparison to other forms of energy, such as solar and wind power, osmotic energy offers several advantages including minimal daily fluctuations, lower costs associated with large-scale facilities, and reduced greenhouse gas emissions. [2][3][4] Methods previously discussed for energy extraction include pressure-retarded osmosis (PRO), reverse electrodialysis (RED), concentration-based electrochemical cells, and devices that harness disparities in vapor pressure. [1] Among them, RED is an environmentally friendly and sustainable solution that enables the direct conversion of freely available energy from the combination of two liquid solutions into electrical power without requiring any additional equipment.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Nanoporous Alumina Membranes for Nanofluidic Osmotic Energy Conversion

Zhang,

Wang,

Wang

et al. 2023

Chemistry An Asian Journal

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The potential of harnessing osmotic energy from the interaction between seawater and river water has been recognized as a promising, eco‐friendly, renewable, and sustainable source of power. The reverse electrodialysis (RED) technology has gained significant interest for its ability to generate electricity by combining concentrated and diluted streams with different levels of salinity. Nanofluidic membranes with tailored ion transport dynamics enable efficient harvesting of renewable osmotic energy. In this regard, anodic aluminum oxide (AAO) membranes with abundant nanochannels provide a cost‐effective nanofluidic platform to obtain structures with a high density of ordered pores. AAO can be utilized in constructing asymmetric composite membranes with enhanced ion flux and selectivity to improve output power generation. In this review, we first present the fundamental structure and properties of AAO, followed by summarizing the fabrication techniques for asymmetric membranes using AAO and other nanostructured materials. Subsequently, we discuss the materials employed in constructing asymmetric structures incorporating AAO while emphasizing how material selection and design can resist and promote efficient energy conversion. Finally, we provide an outlook on future applications and address the challenges that need to be overcome for successful osmotic energy conversion.

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Clean power generation from salinity gradient using reverse electrodialysis technologies: Recent advances, bottlenecks, and future direction

Cited by 30 publications

References 145 publications

A Strategy for Power Density Amelioration of Capacitive Reverse Electrodialysis Systems with a Single Membrane

A Strategy for Power Density Amelioration of Capacitive Reverse Electrodialysis Systems with a Single Membrane

Fouling and Mitigation Behavior of Foulants on Ion Exchange Membranes with Surface Property in Reverse Electrodialysis

Asymmetric Nanoporous Alumina Membranes for Nanofluidic Osmotic Energy Conversion

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