Prediction of reverse electrodialysis performance by inclusion of 2D fluorescence spectroscopy data into multivariate statistical models

Pawlowski, Sylwin; Galinha, Cláudia F.; Crespo, João G.; Велизаров, Светлозар

doi:10.1016/j.seppur.2015.06.032

Cited by 23 publications

(19 citation statements)

References 26 publications

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“…It was also observed that, with respect to artificial saline streams, the evolution/degradation of the membranes is much faster when natural feeds are used [295]. The incorporation of an optical fiber bundle probe in a membrane fouling simulator device with an optical window [299] may enable a more precise in-depth study and modeling of fouling based on data captured by 2D fluorescence spectroscopy [31,295,300,301]. Such captured information has already proved to be essential to the development of robust multivariate statistical models for the prediction of pressure drop, electric resistance and net power density in a RED stack [31].…”

Section: Fouling Studies In Redmentioning

confidence: 99%

“…Tedesco et al [30] [30] when natural saline streams were used compared to other studies [31,32,295]; the ion-exchange membranes used had almost 5 times lower electric resistance and utilization of highly concentrated saline brines allowed for a much higher salinity ratio between concentrated and dilute streams: ~150 [30], ~80 [31,295] and ~7 [32]. The utilization of highly concentrated brines, however, incurs an additional challenge as the efficiency of power extraction decreases with an increase in concentrated stream salinity since the membrane permselectivity (especially that of the anion-exchange membrane) decreases due to the weakening of the Donnan exclusion of co-ions.…”

Section: Fouling Studies In Redmentioning

confidence: 99%

“…Utilization of natural saline streams as a source for RED resulted in positive net power generation [29][30][31], but to a lesser extent when compared to artificial NaCl solutions. The presence of organic compounds and divalent ions in natural streams reduces (in some cases by more than -50%) the obtained power due to overlapping electrochemical and fouling phenomena [29-32, 268, 295].…”

Section: Concluding Remarks and Future Prospectsmentioning

confidence: 99%

“…This review focuses on RED technology which is currently witnessing a significant development and, so far, the only pilot plant producing power from SGP using RED technology [28][29][30]. Furthermore, positive net power density values have been already achieved in RED stacks operated over extended periods of time with either natural river water and seawater [31][32][33] or brackish water/seawater and brine [29,30,34,35]. The present work presents a detailed critical assessment of the potential of RED to harvest salinity gradient energy.…”

Section: Introductionmentioning

confidence: 99%

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Progress and prospects in reverse electrodialysis for salinity gradient energy conversion and storage

Tufa

Pawlowski

Veerman³

et al. 2018

Applied Energy

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Salinity gradient energy is currently attracting growing attention among the scientific community as a renewable energy source. In particular, Reverse Electrodialysis (RED) is emerging as one of the most promising membrane-based technologies for renewable energy generation by mixing two solutions of different salinity. This work presents a critical review of the most significant achievements in RED, focusing on membrane development, stack design, fluid dynamics, process optimization, fouling and potential applications. Although RED technology is mainly investigated for energy generation from river water/seawater, the opportunities for the use of concentrated brine are considered as well, driven by benefits in terms of higher power density and mitigation of adverse environmental effects related to brine disposal. Interesting extensions of the applicability of RED for sustainable production of water and hydrogen when complemented by reverse osmosis, membrane distillation, bioelectrochemical systems and water electrolysis technologies are also discussed, along with the possibility to use it as an energy storage device. The main hurdles to market implementation, predominantly related to unavailability of high performance, stable and low-cost membrane materials, are outlined. A techno-economic analysis based on the available literature data is also performed and critical research directions to facilitate commercialization of RED are identified.

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Section: Fouling Studies In Redmentioning

confidence: 99%

Section: Fouling Studies In Redmentioning

confidence: 99%

Section: Concluding Remarks and Future Prospectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Progress and prospects in reverse electrodialysis for salinity gradient energy conversion and storage

Tufa

Pawlowski

Veerman³

et al. 2018

Applied Energy

Self Cite

237

157

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show abstract

“…However, utilization of such thin channels will most probably require extensive water pretreatment in order to remove possible foulants (sands, clays, humic compounds, etc.) from the water streams[26,[72][73].…”

mentioning

confidence: 99%

Computational fluid dynamics (CFD) assisted analysis of profiled membranes performance in reverse electrodialysis

Pawlowski

Geraldes

Crespo

et al. 2016

Journal of Membrane Science

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Implementation of reverse electrodialysis (RED) is economically limited by the relatively high ion-exchange membranes price. Additionally, the shadow effect of non-conductive spacers reduces the membrane area available for counter-ion transport and increases the stack electric resistance. A promising alternative could be utilization of profiled membranes, since the reliefs formed on their surface keeps the membranes separated and provides channels for solutions flow. Herein, we have simulated, through computational fluid dynamics (CFD) tools, fluid behavior in channels formed by various profiled membranes. The highest net power density values were obtained for corrugations shape and arrangement in a form of chevrons due to the increase of the available membrane area and an excellent balance between enhancement of mass transfer and the increase of the pressure drop in the channel. When properly designed, corrugated membranes may offer a better performance even compared to the case of conductive spacers. The proposed membrane corrugation design in not limited to the RED application, and could be also extended to other electromembrane processes, such as electrodialysis and Donnan dialysis, in which high ionic mass transport rates are desirable at as low as possible energy costs.

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Reverse electrodialysis

Veerman¹,

Vermaas

2016

Sustainable Energy From Salinity Gradients

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Prediction of reverse electrodialysis performance by inclusion of 2D fluorescence spectroscopy data into multivariate statistical models

Cited by 23 publications

References 26 publications

Progress and prospects in reverse electrodialysis for salinity gradient energy conversion and storage

Progress and prospects in reverse electrodialysis for salinity gradient energy conversion and storage

Computational fluid dynamics (CFD) assisted analysis of profiled membranes performance in reverse electrodialysis

Reverse electrodialysis

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