Non-membrane solvent extraction desalination (SED) technology using solubility-switchable amine

Choi, Oh Kyung; Seo, Jeong Hwan; Kim, Gyeong Soo; Hendren, Zachary; Kim, Gyu Dong; Kim, Doo-Il; Lee, Jae Woo

doi:10.1016/j.jhazmat.2020.123636

Cited by 21 publications

(13 citation statements)

References 29 publications

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“…Dipropylamine (DPA) was found to have a high salt rejection rate and efficient water recovery. 18 Also, Boo et al 19 for extracting water from high-salinity brines, with total dissolved solids as high as ∼292 g/L.…”

Section: Introductionmentioning

confidence: 99%

“…Guo et al also performed SED experiments and simulations using DA as the solvent for separating arsenic from contaminated wastewater, and the demonstrated separation efficiencies were as high as 91% for As(III) and 97% for As(V). Very recently, Choi et al performed temperature swing SED experiments using different amine-based solvents for separating water from saline solutions. Dipropylamine (DPA) was found to have a high salt rejection rate and efficient water recovery .…”

Section: Introductionmentioning

confidence: 99%

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Molecular Simulation of High-Salinity Brines in Contact with Diisopropylamine and Tripropylamine Solvents

Sappidi

Barbosa

Rabideau

et al. 2021

Ind. Eng. Chem. Res.

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All-atom molecular dynamics simulations are used to understand the structural and thermodynamic behavior of water in a biphasic system composed of a brine solution in contact with two different amine-based solvents, diisopropylamine (DiPA) and tripropylamine. As compared to the bulk brine solution, the biphasic system leads to significant salt aggregation and crystallization, and this behavior is observed over a relatively broad range of temperatures, from 278 to 343 K. In general, there are stronger hydrogen bond interactions between DiPA and water, leading to more favorable solvation and reduced diffusion rates. Detailed analysis of the solvation behavior is provided by using thermodynamic integration to calculate the free energy of water solvation in different brine and solvent mixtures. This also indicates a stronger interaction of water with the DiPA solvent, and this occurs mainly via interactions of the oxygen atoms in water with the nitrogen atoms of the solvent molecules. Overall, the structural and thermodynamic analyses in this study provide a better molecular-level understanding of solvent-based desalination of high-salinity brines.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular Simulation of High-Salinity Brines in Contact with Diisopropylamine and Tripropylamine Solvents

Sappidi

Barbosa

Rabideau

et al. 2021

Ind. Eng. Chem. Res.

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“…The application of infra red radiation in preheating section and the meso scale reactor shall reside in an enclosure consisting of infrared heating device of 100 W and 220 V, [27] the process will increase the working temperature for the DSE process, cooling is planned to achieve via a heat exchanger or a chiller or, atmospheric cooling. The total exergy and energy calculations will be conducted to see the energy requirement for the process [23,2]. Water inlet salinity will be kept around e.g.…”

Section: Methodsmentioning

confidence: 99%

“…Modern desalination technologies, including evaporative and reverse osmosis systems, are energy-intensive and not suitable to treat high salinity water. Evaporative systems such as multi-stage flash (MSF) and multi-effect distillation (MED) utilize thermal energy in the range of 90 • C and 55 • C respectively in the range to evaporate and condensate water respectively in the range to evaporate and condensate water [23]. These systems require resistant and costly materials [24] and are heat intensive (26.29-83.06 kW h/m 3 ).…”

Section: Introductionmentioning

confidence: 99%

Process intensification in Desalination operation in mesoscale systems

Chakravorty¹

2022

Preprint

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Development of desalination technologies has been identified as vital to fulfilling future water demand. Directional solvent extraction is one of the promising membrane-less seawater desalination method. Membrane based desalination technologies incur a higher cost and are subjected to fouling after certain period of time of operation and needs regular maintenance and monitoring. It is believed that, overcoming these drawbacks is possible by working in the millimeter scale through the incorporation of pulsatile flow and air damper. This work presents a theoretical approach designed for a certain nominal length of an air damper, placed on the top of the extraction column, with the flow in the desalination unit being semi pulsatile combined with secondary pulsation generated due to air suspension during solvent extraction applied for desalination operation. Henceforth a theoretical approach based on the above stated parameters, it is found theoretically that with increase in flow pulsation amplitude and frequency the extracted salt concentration in solvent increases. The application of infra red radiation in preheating section with the help of a infrared heating device is the crucial part of DSE process, cooling is planned to achieve via a heat exchanger or atmospheric cooling. The total exergy and energy calculations will be conducted to see the energy requirement for the process. It is planned to calculate the salt separation efficiency of sea water (on the basis of WHO guidelines) to fresh water, alongwith flow rate and processing time.

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“…There are numerous methods for the separation and extraction of these metals. [1] , [2] , [3] Recently, lithium has been separated from spent battery material using ultrasonic leaching with an efficiency >99%. [4] However, using a membrane is one of the most successful and environmentally friendly methods.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound-assisted of alkali chloride separation using bulk ionic liquid membrane

Shekaari

Golmohammadi

2021

Ultrasonics Sonochemistry

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Non-membrane solvent extraction desalination (SED) technology using solubility-switchable amine

Cited by 21 publications

References 29 publications

Molecular Simulation of High-Salinity Brines in Contact with Diisopropylamine and Tripropylamine Solvents

Molecular Simulation of High-Salinity Brines in Contact with Diisopropylamine and Tripropylamine Solvents

Process intensification in Desalination operation in mesoscale systems

Ultrasound-assisted of alkali chloride separation using bulk ionic liquid membrane

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