Membrane Distillation and Reverse Electrodialysis for Near-Zero Liquid Discharge and low energy seawater desalination

Abstract With a total capacity of 70 million cubic meters per day, seawater desalination industry represents the most affordable source of drinking water for many people living in arid areas of the world. Seawater Reverse Osmosis (SWRO) technology, driven by the impressive development in membrane materials, modules and process design, currently shows an overall energy consumption of 3–4 kW h per m3 of desalted water, substantially lower than thermal systems; however, the theoretical energy demand to produce 1 m3 of potable water from 2 m3 of seawater (50% recovery factor) is 1.1 kW h. In order to move towards this goal, the possibility to recover the energy content of discharged concentrates assumes a strategic relevance. In this work, an innovative approach combining Direct Contact Membrane Distillation (DCMD) and Reverse Electrodialysis (RE) is tested for simultaneous water and energy production from SWRO brine, thus implementing the concept of low energy and Near-Zero Liquid Discharge in seawater desalination. DCMD operated on 1 M NaCl RO retentate fed at 40–50 °C resulted in a Volume Reduction Factor (VRF) up to 83.6% with transmembrane flux in the range of 1.2–2.4 kg/m2 h. The performance of RE stack fed with DCMD brine (4–5.4 M) and seawater (0.5 M) was investigated at different temperatures (10–45 °C) and flow velocities (0.7–1.1 cm/s). Experimental data show the possibility to obtain an Open Circuit Voltage (OCV) in the range of 1.5–2.3 V and a gross power density of 0.9–2.4  W / m MP 2 (membrane pair). In general, optimization is required to find best operating conditions for the proposed system.

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

[2]  E. Brauns,et al.  An alternative hybrid concept combining seawater desalination, solar energy and reverse electrodialysis for a sustainable production of sweet water and electrical energy , 2010 .

[3]  Nagamany Nirmalakhandan,et al.  Renewable and sustainable approaches for desalination , 2010 .

[4]  J. Post,et al.  Energy recovery from controlled mixing salt and fresh water with a reverse electrodialysis system. , 2008, Environmental science & technology.

[5]  M. Buonomenna,et al.  Membrane processes and renewable energies , 2015 .

[6]  O. Park,et al.  Analysis of surface morphological changes in organic photovoltaic devices: bilayer versus bulk-heterojunction , 2011 .

[7]  G Jan Harmsen,et al.  Electrical power from sea and river water by reverse electrodialysis: a first step from the laboratory to a real power plant. , 2010, Environmental science & technology.

[8]  M. Elimelech,et al.  The Future of Seawater Desalination: Energy, Technology, and the Environment , 2011, Science.

[9]  F. Giménez-Casalduero,et al.  Effects of a brine discharge over soft bottom Polychaeta assemblage. , 2008, Environmental pollution.

[10]  Marek Gryta,et al.  CONCENTRATION OF NaCl SOLUTION BY MEMBRANE DISTILLATION INTEGRATED WITH CRYSTALLIZATION , 2002 .

[11]  Thomas Melin,et al.  State-of-the-art of reverse osmosis desalination , 2007 .

[12]  Kitty Nijmeijer,et al.  Doubled power density from salinity gradients at reduced intermembrane distance. , 2011, Environmental science & technology.

[13]  M. Godino,et al.  Water production from brines by membrane distillation , 1997 .

[14]  João G. Crespo,et al.  Mass transfer in reverse electrodialysis: Flow entrance effects and diffusion boundary layer thickness , 2014 .

[15]  Noreddine Ghaffour,et al.  Renewable energy-driven innovative energy-efficient desalination technologies , 2014 .

[16]  E. Macpherson,et al.  Effect of brine discharge from a desalination plant on macrobenthic communities in the NW Mediterranean. , 2006, Marine environmental research.

[17]  M. Latorre.  Environmental impact of brine disposal on Posidonia seagrasses , 2005 .

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

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

[20]  S. Iso,et al.  The lethal effect of hypertonic solutions and avoidance of marine organisms in relation to discharged brine from a destination plant , 1994 .

[21]  José Miguel González-Correa,et al.  Preliminary results of the monitoring of the brine discharge produced by the SWRO desalination plant of Alicante (SE Spain) , 2005 .

[22]  E. Drioli,et al.  Potential of membrane distillation in seawater desalination: Thermal efficiency, sensitivity study and cost estimation , 2008 .

[23]  Enrico Drioli,et al.  Probing membrane and interface properties in concentrated electrolyte solutions , 2014 .

[24]  Jin Gi Hong,et al.  Modeling of power generation from the mixing of simulated saline and freshwater with a reverse electrodialysis system: The effect of monovalent and multivalent ions , 2013 .

[25]  E. Brauns.  Towards a worldwide sustainable and simultaneous large-scale production of renewable energy and potable water through salinity gradient power by combining reversed electrodialysis and solar power? , 2008 .

[26]  E. Hoek,et al.  Thermodynamic analysis of osmotic energy recovery at a reverse osmosis desalination plant. , 2013, Environmental science & technology.

[27]  Menachem Elimelech,et al.  Thermodynamic, energy efficiency, and power density analysis of reverse electrodialysis power generation with natural salinity gradients. , 2014, Environmental science & technology.

[28]  Xiaoyan Ji,et al.  Determination of the Activity Coefficients of NaCl in the System NaCl–NH4Cl–H2O , 2001 .

[29]  N. Hilal,et al.  Membrane distillation: A comprehensive review , 2012 .

[30]  Yongsheng Fan,et al.  Blue energy: Current technologies for sustainable power generation from water salinity gradient , 2014 .

[31]  Matthias Wessling,et al.  Practical potential of reverse electrodialysis as process for sustainable energy generation. , 2009, Environmental science & technology.

[32]  Hubertus V. M. Hamelers,et al.  Towards implementation of reverse electrodialysis for power generation from salinity gradients , 2010 .

[33]  John H. Lienhard,et al.  Scaling and fouling in membrane distillation for desalination applications: A review , 2015 .

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

[35]  Kitty Nijmeijer,et al.  Fouling in reverse electrodialysis under natural conditions. , 2013, Water research.

[36]  E. Drioli,et al.  Membrane Distillation and Related Operations—A Review , 2005 .

[37]  Enrico Drioli,et al.  Membrane distillation operated at high seawater concentration factors: Role of the membrane on CaCO3 scaling in presence of humic acid , 2010 .

[38]  Munjed A. Maraqa,et al.  Impact of land disposal of reject brine from desalination plants on soil and groundwater , 2005 .

[39]  Lei Jiang,et al.  Towards understanding the nanofluidic reverse electrodialysis system: well matched charge selectivity and ionic composition , 2011 .

[40]  T. Höpner,et al.  Environmental impact and impact assessment of seawater desalination , 2008 .

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

[42]  Chuyang Y. Tang,et al.  A novel hybrid process of reverse electrodialysis and reverse osmosis for low energy seawater desalination and brine management , 2013 .

[43]  Rien Herber,et al.  Upscale potential and financial feasibility of a reverse electrodialysis power plant , 2014 .

[44]  Y Del Pilar Ruso,et al.  Spatial and temporal changes in infaunal communities inhabiting soft-bottoms affected by brine discharge. , 2007, Marine environmental research.

[45]  Andrea Cipollina,et al.  Modelling the Reverse ElectroDialysis process with seawater and concentrated brines , 2012 .

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

[47]  Javier Romero,et al.  Impact of the brine from a desalination plant on a shallow seagrass (Posidonia oceanica) meadow , 2007 .

[48]  Jeffrey A. Ruskowitz,et al.  RO-PRO desalination: An integrated low-energy approach to seawater desalination , 2014 .

[49]  R. Chesher.  Chapter 6. Biological Impact of a Large-Scale Desalination Plant at Key West, Florida , 1975 .

[50]  Menachem Elimelech,et al.  High Efficiency in Energy Generation from Salinity Gradients with Reverse Electrodialysis , 2013 .

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

[52]  Enrico Drioli,et al.  Membrane distillation-crystallization of seawater reverse osmosis brines , 2010 .

[53]  H. Shon,et al.  Fouling and its control in membrane distillation-A review , 2015 .

[54]  Bert Hamelers,et al.  Clean energy generation using capacitive electrodes in reverse electrodialysis , 2013 .

[55]  Efrem Curcio,et al.  Membrane engineering for process intensification : a perspective , 2007 .