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

Abstract Reverse electrodialysis (RED) is a promising technology to extract energy from salinity gradients, especially in the areas where concentrated brine and saline waters are available as feed streams. A first pilot-scale plant was recently built in Trapani (Italy), and tested with real brackish water and brine from saltworks. The present work focuses on the scale-up of the pilot plant, reaching more than 400 m 2 of total membrane area installed and representing the largest operating RED plant so far reported in the literature. With a nominal power capacity of 1 kW, the pilot plant reached almost 700 W of power capacity using artificial brine and brackish water, while a 50% decrease in power output was observed when using real solutions. This reduction was likely due to the presence of non-NaCl ions in relatively large concentration, which negatively affected both the electromotive force and stack resistance. These results provide relevant and unique information for the RED process scale-up, representing the first step for the feasibility assessment of RED technology on large scale.

[1]  Ramato Ashu Tufa,et al.  Potential of brackish water and brine for energy generation by salinity gradient power-reverse electrodialysis (SGP-RE) , 2014 .

[2]  Akshay Deshmukh,et al.  Pressure-retarded osmosis for power generation from salinity gradients: is it viable? , 2016 .

[3]  Antonio Piacentino,et al.  Salinity gradient engines , 2016 .

[4]  P. M. Biesheuvel,et al.  Nernst-Planck transport theory for (reverse) electrodialysis: II. Effect of water transport through ion-exchange membranes , 2016, 1610.02833.

[5]  Doriano Brogioli,et al.  Capacitive mixing and mixing entropy battery , 2016 .

[6]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[7]  R. E. Pattle.  Production of Electric Power by mixing Fresh and Salt Water in the Hydroelectric Pile , 1954, Nature.

[8]  Michele Ciofalo,et al.  Flow and mass transfer in spacer-filled channels for reverse electrodialysis: a CFD parametrical study , 2016 .

[9]  Hubertus V. M. Hamelers,et al.  Influence of multivalent ions on power production from mixing salt and fresh water with a reverse electrodialysis system , 2009 .

[10]  A. Albanese,et al.  Investigation of electrode material – redox couple systems for reverse electrodialysis processes. Part II: Experiments in a stack with 10–50 cell pairs , 2013 .

[11]  Fang Zhang,et al.  Patterned ion exchange membranes for improved power production in microbial reverse-electrodialysis cells , 2014 .

[12]  M. Elimelech,et al.  Membrane-based processes for sustainable power generation using water , 2012, Nature.

[13]  S. Arango-Aramburo,et al.  Assessment of the marine power potential in Colombia , 2016 .

[14]  Charles James Lemckert,et al.  The power of salinity gradients: An Australian example , 2015 .

[15]  Ramato Ashu Tufa,et al.  Effect of Mg2+ ions on energy generation by Reverse Electrodialysis , 2016 .

[16]  Alessandro Galia,et al.  Investigation of electrode material – Redox couple systems for reverse electrodialysis processes. Part I: Iron redox couples , 2012 .

[17]  D. Brogioli.  Extracting renewable energy from a salinity difference using a capacitor. , 2009, Physical review letters.

[18]  J. Post,et al.  Salinity-gradient power : Evaluation of pressure-retarded osmosis and reverse electrodialysis , 2007 .

[19]  Adam Michael Weiner,et al.  Increasing the power density and reducing the levelized cost of electricity of a reverse electrodialysis stack through blending , 2015 .

[20]  E. Brauns,et al.  Reverse Electrodialysis with saline waters and concentrated brines: a laboratory investigation towards technology scale-up , 2015 .

[21]  Michael Papapetrou,et al.  REAPOWER – USE OF DESALINATION BRINE FOR POWER PRODUCTION THROUGH REVERSE ELECTRODIALYSIS , 2015 .

[22]  Dc Kitty Nijmeijer,et al.  Experimentally obtainable energy from mixing river water, seawater or brines with reverse electrodialysis , 2014 .

[23]  Michael Papapetrou,et al.  Analysis and simulation of scale-up potentials in reverse electrodialysis , 2015 .

[24]  Giorgio Micale,et al.  Performance of the first reverse electrodialysis pilot plant for power production from saline waters and concentrated brines , 2016 .

[25]  Guy Z. Ramon,et al.  Membrane-based production of salinity-gradient power , 2011 .

[26]  Bruce E Logan,et al.  Energy recovery from solutions with different salinities based on swelling and shrinking of hydrogels. , 2014, Environmental science & technology.

[27]  Kitty Nijmeijer,et al.  Influence of multivalent ions on renewable energy generation in reverse electrodialysis , 2014 .

[28]  Matthias Wessling,et al.  On the resistances of membrane, diffusion boundary layer and double layer in ion exchange membrane transport , 2010 .

[29]  Kitty Nijmeijer,et al.  Micro-structured membranes for electricity generation by reverse electrodialysis , 2014 .

[30]  Michele Ciofalo,et al.  CFD prediction of concentration polarization phenomena in spacer-filled channels for reverse electrodialysis , 2014 .

[31]  Dc Kitty Nijmeijer,et al.  Power generation using profiled membranes in reverse electrodialysis , 2011 .

[32]  Matthias Wessling,et al.  Ion conductive spacers for increased power generation in reverse electrodialysis , 2010 .

[33]  Cees J.N. Buisman,et al.  The concentration gradient flow battery as electricity storage system: Technology potential and energy dissipation , 2016 .

[34]  P. M. Biesheuvel,et al.  Direct power production from a water salinity difference in a membrane-modified supercapacitor flow cell. , 2010, Environmental science & technology.

[35]  Marta C. Hatzell,et al.  Salt Concentration Differences Alter Membrane Resistance in Reverse Electrodialysis Stacks , 2014 .

[36]  G. J. Harmsen,et al.  Reverse electrodialysis : Performance of a stack with 50 cells on the mixing of sea and river water , 2009 .

[37]  Ryan S. Kingsbury,et al.  Energy storage by reversible electrodialysis: The concentration battery , 2015 .

[38]  Giorgio Micale,et al.  A simulation tool for analysis and design of reverse electrodialysis using concentrated brines , 2015 .

[39]  Bruce E. Logan,et al.  Reducing pumping energy by using different flow rates of high and low concentration solutions in reverse electrodialysis cells , 2015 .

[40]  R. Lacey.  Energy by reverse electrodialysis , 1980 .

[41]  E. Brauns,et al.  Salinity gradient power by reverse electrodialysis: effect of model parameters on electrical power output , 2009 .

[42]  Michele Ciofalo,et al.  CFD modelling of profiled-membrane channels for reverse electrodialysis , 2015 .

[43]  João G. Crespo,et al.  Computational fluid dynamics (CFD) assisted analysis of profiled membranes performance in reverse electrodialysis , 2016 .

[44]  Michele Tedesco,et al.  Nernst-Planck transport theory for (reverse) electrodialysis: I. Effect of co-ion transport through the membranes , 2016 .

[45]  Alberto Brucato,et al.  Reactive crystallisation process for magnesium recovery from concentrated brines , 2015 .

[46]  Enver Guler,et al.  Monovalent-ion-selective membranes for reverse electrodialysis , 2014 .

[47]  Andrea Cipollina,et al.  Integrated production of fresh water, sea salt and magnesium from sea water , 2012 .