scholarly journals Task-Specific Ionic Liquid Enables Highly Efficient Low Temperature Desalination by Directional Solvent Extraction

Author(s):  
Jiaji Guo ◽  
Zachary D. Tucker ◽  
Yu Wang ◽  
Brandon L. Ashfeld ◽  
Tengfei Luo

Seawater desalination plays a critical role in addressing the global water shortage challenge, and directional solvent extraction (DSE) is an emerging desalination technology to address this challenge. Herein, we demonstrate that through a combination of target-directed synthesis and computational simulations, task-specific ionic liquids (ILs) may significantly advance current DSE technology by improving the energy efficiency toward impacting the global water-energy nexus.

Author(s):  
Jiaji Guo ◽  
Zachary D. Tucker ◽  
Yu Wang ◽  
Brandon L. Ashfeld ◽  
Tengfei Luo

Seawater desalination plays a critical role in addressing the global water shortage challenge, and directional solvent extraction (DSE) is an emerging desalination technology to address this challenge. Herein, we demonstrate that through a combination of target-directed synthesis and computational simulations, task-specific ionic liquids (ILs) may significantly advance current DSE technology by improving the energy efficiency toward impacting the global water-energy nexus.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jiaji Guo ◽  
Zachary D. Tucker ◽  
Yu Wang ◽  
Brandon L. Ashfeld ◽  
Tengfei Luo

AbstractSeawater desalination plays a critical role in addressing the global water shortage challenge. Directional Solvent Extraction (DSE) is an emerging non-membrane desalination technology that features the ability to utilize very low temperature waste heat (as low as 40 °C). This is enabled by the subtly balanced solubility properties of directional solvents, which do not dissolve in water but can dissolve water and reject salt ions. However, the low water yield of the state-of-the-art directional solvent (decanoic acid) significantly limits its throughput and energy efficiency. In this paper, we demonstrate that by using ionic liquid as a new directional solvent, saline water can be desalinated with much higher production rate and thus significantly lower the energy and exergy consumptions. The ionic liquid identified suitable for DSE is [emim][Tf2N], which has a much (~10×) higher water yield than the currently used decanoic acid. Using molecular dynamics simulations with Gibbs free energy calculations, we reveal that water dissolving in [emim][Tf2N] is energetically favorable, but it takes significant energy for [emim][Tf2N] ions to dissolve in water. Our findings may significantly advance the DSE technology as a solution to the challenges in the global water-energy nexus.


ChemSusChem ◽  
2014 ◽  
Vol 7 (12) ◽  
pp. 3180-3180
Author(s):  
Shannon M. Mahurin ◽  
Pasquale F. Fulvio ◽  
Patrick C. Hillesheim ◽  
Kimberly M. Nelson ◽  
Gabriel M. Veith ◽  
...  

ChemSusChem ◽  
2014 ◽  
Vol 7 (12) ◽  
pp. 3284-3289 ◽  
Author(s):  
Shannon M. Mahurin ◽  
Pasquale F. Fulvio ◽  
Patrick C. Hillesheim ◽  
Kimberly M. Nelson ◽  
Gabriel M. Veith ◽  
...  

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