Towards 1 kW power production in a reverse electrodialysis pilot plant with saline waters and concentrated brines

Tedesco, Michele; Cipollina, Andrea; Tamburini, Alessandro; Micale, G.

doi:10.1016/j.memsci.2016.09.015

Cited by 175 publications

(117 citation statements)

References 44 publications

(66 reference statements)

Supporting

Mentioning

109

Contrasting

Unclassified

Order By: Relevance

“…Firstly, investigations were limited to salts based on monovalent ions as the presence of bivalent ions (e.g. Ca 2+ , Mg 2+ and SO4 2-) was found to strongly affect the IEMs performance thus resulting into a lower power production [21,22,30,31]. As shown in Table 1, a large number of salts based on monovalent ions was included into the selection procedure to identify a few salt-water solutions to be tested in the experimental campaign.…”

Section: Pure Salts Selectionmentioning

confidence: 99%

Effect of different aqueous solutions of pure salts and salt mixtures in reverse electrodialysis systems for closed-loop applications

Micari

Bevacqua

Cipollina

et al. 2018

Journal of Membrane Science

View full text Add to dashboard Cite

Reverse Electrodialysis in a closed-loop arrangement is a viable way to convert lowgrade heat into electric power. For the first time, the present work experimentally investigates the use of pure saltwater and equimolar two salts-water as feed solutions in a lab-scale RED unit in terms of OCV, stack resistance and corrected power density. The pure salts and the mixture salts to be employed were chosen via a computational analysis. Effect of feed solution velocity and concentration was also investigated. Results concerning the pure saltwater experiments suggest the use of NH4Cl in the concentration range investigated, while higher power density values are expected with the use of LiCl at larger concentrations. As regards the salt binary mixtures, in some cases the measured stack electrical resistance was found lower than both the two values measured for the corresponding pure salts, thus resulting into higher power density values for the mixtures. This surprising experimental evidence suggests that it is possible to increase the power produced by a conventional RED unit by adding an equivalent molar quantity of another suitable salt. Finally, among the mixtures tested, the NH4Cl-LiCl mixture appears as the most promising, thanks to the combination of the favorable properties of these two salts.

show abstract

Section: Pure Salts Selectionmentioning

confidence: 99%

Effect of different aqueous solutions of pure salts and salt mixtures in reverse electrodialysis systems for closed-loop applications

Micari

Bevacqua

Cipollina

et al. 2018

Journal of Membrane Science

View full text Add to dashboard Cite

show abstract

“…When passing to desalination brines and to ultra-concentrated brines (such as those availabile in saltwroks) power density could reach values above 10 W per square meter of cell pair area [41], [42], thus boosting the potential for economical competitiveness of this technology. An important milestone of such recent developments has been the installation of a RED pilot plant in Marsala saltworks (Trapani, Italy) operating with concentrated brines and saline solutions [43], [44]. The prototype is the first plant operating in such conditions and has reached the largest power production ever registered so far worldwide.…”

Section: Fig 1 Functional Diagram Of the Red Technologymentioning

confidence: 99%

A methodology for assessing the impact of salinity gradient power generation in urban contexts

Cipollina

Silvestre

Giacalone

et al. 2018

Sustainable Cities and Society

View full text Add to dashboard Cite

-The paper proposes a methodology to assess the potential impact of salinity gradient power technology in urban contexts. The idea to employ such energy source in urban contexts derives from the observation that, among the energy districts outputs, low-salinity treated wastewater can be used to produce electricity if a suitable source of high salinity feed (seawater of a salt-works) is also available.The methodology uses the HOMER software for assessing the district's electric energy production, consumption and exchange with the main grid. Then, starting from the total gross surface and the number of inhabitants of the district, some possible realistic scenarios characterized by different wastewater flow rate are defined. Finally, for each scenario the size and the yearly energy production of the salinity gradient power system are calculated thanks to a simulator carried out by the same authors.An application example, considering three different scenarios, shows that urban density plays a crucial role in the process and that the most promising realistic scenarios are those including treated wastewater and brine and unlimited seawater and brine.The economic feasibility of the salinity gradient power technology is evaluated by a comparison with classical renewable technologies such as photovoltaic and wind systems.

show abstract

“…Inspired from these results, the plant was upscaled to a capacity of 1 kW. To achieve this objective, the membrane area was increased to 400 m 2 [16]. With the nominal capacity of 1 kW, the plant could achieve power capacity of 700 W using artificial brine and brackish water.…”

Section: Energy Consumption and Productionmentioning

confidence: 99%

Membrane Engineering for Sustainable Development: A Perspective

2017

View full text Add to dashboard Cite

Abstract:Membrane engineering can offer an important contribution in realizing sustainable industrial development. It provides opportunities to redesign the conventional process of engineering in the logic of Process Intensification. Relatively new and less exploited membrane operations offer innovative solutions to the scarcity of raw materials, freshwater and energy. Here, we identify the most interesting aspects of membrane engineering in some strategic industrial sectors. Several cases of either successful or innovative membrane technologies are discussed.

show abstract

Towards 1 kW power production in a reverse electrodialysis pilot plant with saline waters and concentrated brines

Cited by 175 publications

References 44 publications

Effect of different aqueous solutions of pure salts and salt mixtures in reverse electrodialysis systems for closed-loop applications

Effect of different aqueous solutions of pure salts and salt mixtures in reverse electrodialysis systems for closed-loop applications

A methodology for assessing the impact of salinity gradient power generation in urban contexts

Membrane Engineering for Sustainable Development: A Perspective

Contact Info

Product

Resources

About