Solvent-driven aqueous separations for hypersaline brine concentration and resource recovery

Distributed desalination using solar energy: A technoeconomic framework to decarbonize nontraditional water treatment

“…Emerging treatment technologies are promising in this regard as they comprise inexpensive materials and can be driven by heat ( e.g., membrane distillation and humidification-dehumidification) 83 and in some cases leverage non-evaporative thermal phase transitions to be more energy-efficient ( e.g., forward osmosis and solvent extraction). 45 , 84 , 85 Pilot-scale demonstrations using salinities higher than seawater 86 will be needed to assess viability under scale-inducing conditions in ZLD.…”

Phase equilibria insights into amine-water-NaCl interactions in liquid-liquid biphasic systems for temperature swing solvent extraction desalination

“…The product water is physically separated, and the regenerated solvent is recycled back to the process. Because TSSE is both membrane-less and non-evaporative, the approach avoids many of the limitations faced by traditional high-salinity desalination technologies [9,[14][15][16]21].…”

“…Although TSSE was first explored for brackish and seawater desalination in the 1950s and 1960s [14,[22][23][24], recent research has focused on its potential for hypersaline desalination [16,17,21,25,26]. Experimental studies have demonstrated desalination capabilities for a range of solvent classes, including amines, aliphatic acids, and ionic liquids [16,25,26].…”

Role of Nanoscale Morphology on the Efficiency of Solvent-Based Desalination Method

“…The use of solvents to extract fresh water from saline sources has recently generated wide attention 20,21 because this approach avoids both the osmotic pressure issues that limit RO and the phase change energy needs of thermal desalination technologies 22−29 However, as early as 1960, Davison, Hood, and co-workers identified the prospects of using the variable solubility of water in organic solvents as a method of desalination of brine. 30,31 Because the solubility of a solvent can be governed by its intrinsic properties (like volatility) as well as by numerous external conditions, the use of solvents in aqueous solutions becomes a multi-stage process.…”

“…The use of solvents to extract fresh water from saline sources has recently generated wide attention , because this approach avoids both the osmotic pressure issues that limit RO and the phase change energy needs of thermal desalination technologies − However, as early as 1960, Davison, Hood, and co-workers identified the prospects of using the variable solubility of water in organic solvents as a method of desalination of brine. , Because the solubility of a solvent can be governed by its intrinsic properties (like volatility) as well as by numerous external conditions, the use of solvents in aqueous solutions becomes a multi-stage process . This solvent-based desalination (SBD) method (can be observed in Figure a and with more detail in Figure S1 of the Supporting Information), also frequently defined as solvent-driven aqueous separation (SDWE), solvent extraction desalination (SED), and temperature swing solvent extraction (TSSE), leverages the solvent’s temperature-dependent solubility in water to extract pure water from a brine solution.…”