Impact of natural organic matter and inorganic solutes on energy recovery from five real salinity gradients using reverse electrodialysis

Kingsbury, Ryan; Liu, F.; Zhu, Shen; Boggs, Christopher; Armstrong, Mikayla D.; Call, Douglas F.; Coronell, Orlando

doi:10.1016/j.memsci.2017.07.038

Cited by 94 publications

(68 citation statements)

References 48 publications

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“…R (8.314 J/(mol·K) is the universal gas constant, T (K) is the absolute temperature, F (96485 C/mol) is the Faraday constant, n (-) is the valence of the ionic species and c (mol/L) is the concentration of both feed waters. The presence of multivalent ions, which can decrease the power production through ion-exchange across the membranes, was taken into account in the same way as discussed in Kingsbury et al (2017) [15]. Activity coefficients were calculated using the Debye-Hückel theory as adapted by Davies [43].…”

Section: Membrane Permselectivity and Power Densitymentioning

confidence: 99%

“…Although it is generally accepted that electrochemical membrane systems are less prone to fouling compared to pressure driven membrane systems [4,12,13], an adequate pre-treatment would be required when using impaired water. The most significant fouling in the RED systems used in this study would be of organic and biological nature, because of the use of secondary treated wastewater [13][14][15][16][17][18]. The risk for scaling is low, since none of the streams are concentrated beyond the initial concentration of the high salinity stream.…”

Section: Introductionmentioning

confidence: 99%

“…However, Vermaas et al (2013) did observe some scaling on the CEM on the seawater side, resulting from the exchange of multivalent ions from river water across that membrane [13]. In a more recent study, Kingsbury et al (2017) compared the fouling behavior of different natural water pairs in RED. They concluded that natural organic matter (NOM) plays a major role in RED fouling effects, with NOM decreasing the power density up to 43% [15].…”

Section: Introductionmentioning

confidence: 99%

“…In a more recent study, Kingsbury et al (2017) compared the fouling behavior of different natural water pairs in RED. They concluded that natural organic matter (NOM) plays a major role in RED fouling effects, with NOM decreasing the power density up to 43% [15]. Di Salvo et al (2018) investigated the use of high salinity fishery wastewater and low salinity wastewater after a membrane bioreactor in RED.…”

Section: Introductionmentioning

confidence: 99%

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Secondary treated domestic wastewater in reverse electrodialysis: What is the best pre-treatment?

Vanoppen

Vooren

Gutierrez

et al. 2019

Separation and Purification Technology

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art Highlights  RED-RO is a promising technology for energy-efficient seawater desalination  Secondary-treated wastewater is a potential low salinity source for RED  An efficient pre-treatment of wastewater is needed before use in RED  Rapid sand filtration and 100 µm provide efficient wastewater pre-treatment  River bank filtration does not provide adequate feed water quality AbstractAlthough Reverse Electrodialysis (RED) is most commonly known as a selective separation technology used for the production of sustainable energy, it can also serve as a valuable pre-desalination tool. By coupling RED to Reverse Osmosis (RO) for seawater desalination: (1) sustainable energy is produced in the RED process and (2) seawater is partially desalinated prior to RO thus, decreasing the energy demand. In this study, secondary-treated wastewater is proposed as the low salinity source in RED and suitable pre-treatment techniques for this effluent are investigated. Although it is generally accepted that RED is less prone to fouling than typical pressure driven membrane processes, results showed that pre-treatment is a key to ensure efficient operation of the wastewater-seawater RED. Both 100 µm filtration and rapid sand filtration proved to be suitable, with an increase in pressure drop of only 0.09-0.18 bar and a permselectivity decrease of only approximately 20% during 40 days of continuous operation. Conversely, River bank filtration did not perform better than the non-pretreated sample. As such, 100 µm filtration and rapid sand filtration are considered suitable, robust, and cost efficient pretreatment options for wastewater fed RED, enabling the improvement of the hybrid process of RED-RO seawater desalination.

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Section: Membrane Permselectivity and Power Densitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Secondary treated domestic wastewater in reverse electrodialysis: What is the best pre-treatment?

Vanoppen

Vooren

Gutierrez

et al. 2019

Separation and Purification Technology

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show abstract

“…The open circuit voltage (OCV) is the sum of the potential difference between two sides of the membranes. The value of OCV can be calculated by Equation , known as Nernst Equation:

OCV = normalα \times \frac{2 NRT}{ZF} ([], \ln \frac{C_{HC} γ_{HC}}{C_{LC} γ_{LC}})

where OCV is the open circuit voltage, V; α is the permselectivity of the membrane; R is the universal gas constant equated to 8.314 J/(mol K); T is the feed temperature, K, all experiments in this paper were carried out in normal temperature and T was fixed as 298 K; Z is the valence of the ionic species; F is the Faraday constant corresponding to 96 485 C/mol; γ is the activity coefficient of the salt in the solution which can be obtained by the extended Debye–Huckel equation, viz. Equation ; C is the concentration of the solution mol/L; subscripts HC and LC refer to the high‐concentrated feed and low‐concentrated feed, respectively …”

Section: Methodsmentioning

confidence: 99%

Performance parameters analysis of reverse electrodialysis process: Sensitive to the repeating unit pairs, inflow velocity and feed concentration

Tumba

et al. 2020

Int J Energy Res

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Summary Reverse electrodialysis (RED) is the most promising technique based on ion exchange membranes for harvesting salinity gradient energy. In the present study aimed to explore the sensitivity of the RED stack performance, different concentrations of NaCl were prepared and used to simulate the salinity of concentrated seawater and that of river water at 298 K. Some major factors including the repeating unit pairs, the flow velocity and the feeding concentration were investigated. When the positive effect by the increase of open‐circuit voltage is greater than the negative effect caused by the increase of internal resistance, the electrical performance of RED stack is improved, and the maximum power density is increased. On the contrary, the value of maximum power density is decreased. The maximum power density reached its maximum when eight repeating units were used, and the optimum flow velocity was obtained as 0.71 cm/s. At a same concentration gradient of the feed, a lower internal resistance was observed at a higher total salinity, leading to better energy generation performance.

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Nanomaterials‐Based Nanochannel Membrane for Osmotic Energy Harvesting

Li,

Wang,

et al. 2023

Adv Funct Materials

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Harvesting clean and renewable osmotic energy through reverse electrodialysis (RED) technology offers a promising solution to address energy crisis problems. The development of nanochannel membranes constructed from diverse nanomaterials plays a crucial role in enabling efficient osmotic energy conversion. In this review, first an overview of the mechanism of the RED process is provided and the physicochemical properties of nanomaterials, covering 0D, 1D, and 2D nanomaterials, and the osmotic conversion performances of the constructed nanochannel membranes. Then, the relationship between chemical properties and structural features of nanochannel membranes is specifically highlighted, including surface charge property and geometric structure, and osmotic energy conversion efficiency. Additionally, the introduction of external stimuli, such as light, temperature, pH, external pressure, and changes in electrolyte environments, are also discussed. Finally, the research directions and future challenges in the field of osmotic energy harvesting using nanochannel membranes based on nanomaterials are presented. The focus is on refining the osmotic conversion mechanism, as well as optimizing the structure design.

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Impact of natural organic matter and inorganic solutes on energy recovery from five real salinity gradients using reverse electrodialysis

Cited by 94 publications

References 48 publications

Secondary treated domestic wastewater in reverse electrodialysis: What is the best pre-treatment?

Secondary treated domestic wastewater in reverse electrodialysis: What is the best pre-treatment?

Performance parameters analysis of reverse electrodialysis process: Sensitive to the repeating unit pairs, inflow velocity and feed concentration

Nanomaterials‐Based Nanochannel Membrane for Osmotic Energy Harvesting

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