Forward osmosis with direct contact membrane distillation using tetrabutylphosphonium p-toluenesulfonate as an effective and safe thermo-recyclable osmotic agent for seawater desalination

Zeweldi, Hana G.; Bendoy, Anelyn P.; Park, Myoung Jun; Shon, Ho Kyong; Johnson, Eldin M.; Kim, Han-Seung; Kim, Hern; Chung, Wook–Jin; Nisola, Grace M.

doi:10.1016/j.chemosphere.2020.128070

Cited by 23 publications

(5 citation statements)

References 65 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The protons on the alkyl moieties of the quaternary cations of [N 4444 ][NS] and [P 4444 ][NS] and the aromatic moieties of the anion have the ability to accept the oxygen lone pairs in water. 65 In addition, when the solution temperature increases above the LCST with gentle heating, the ion–ion interactions, which occur between [N 4444 ] + and [NS] − and between [P 4444 ] + and [NS] − , are more dominant than the ion–water interactions, contributing to the aggregation and subsequently causing turbidity and formation of a heterogeneous solution.…”

Section: Resultsmentioning

confidence: 99%

Influence of the anionic structure and central atom of a cation on the properties of LCST-type draw solutes for forward osmosis

Cho

Kang

2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Influence of the anionic structure and central atom of a cation on the properties of LCST-type draw solutes for forward osmosis

Cho

Kang

2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…These results indicated that the increasing trend of [P 4444 ][C 10 S] was more prominent in the AL-DS mode than in the AL-FS mode. This is associated with the absence of dilutive ICP as the draw solution is in direct contact with the active layer. , The AL-DS mode did not suffer from concentrative ICP owing to the use of distilled water as feed. Therefore, the overall effective osmotic pressure gradient (Δπ eff ) was higher than that in the AL-FS mode, leading to higher water flux values in the AL-DS mode.…”

Section: Resultsmentioning

confidence: 99%

Effect of the Alkyl Chain Length on Assessment as Thermo-Responsive Draw Solutes for Forward Osmosis

Cho

Kang

2022

ACS Omega

View full text Add to dashboard Cite

A series of thermo-responsive tetrabutylphosphonium 1-alkanesulfonates (abbreviated as [P 4444 ][C n S], n = 6, 8, 10, and 12), where n is the number of carbon atoms in the alkyl group on the 1-alkanesulfonate anion, were prepared by an ion-exchange reaction to investigate their potential ability toward the application of draw solutes in forward osmosis (FO). We systematically studied the recovery properties and FO performance ofThis series exhibited lower critical solution temperature (LCST) characteristics, which offer a clear advantage of being energy-efficient for recovering draw solutes; however, [P 4444 ][C 6 S] was only observed at 20 wt %. The LCSTs of the 20 wt % [P 4444 ][C 6 S], [P 4444 ][C 8 S], [P 4444 ][C 10 S], and [P 4444 ]-[C 12 S] draw solutions were approximately 83, 54, 49, and 56 °C, respectively. Moreover, when the orientation of the active layer was heading toward the draw solution (AL-DS mode), the water and reverse solute flux of [P 4444 ][C 10 S] were about 1.58 LMH and 0.81 gMH, respectively, at 20 wt % aqueous solutions. When the membrane was used in the active layer facing the feed solution (AL-FS) system, the water and reverse solute flux of [P 4444 ][C 10 S] were approximately 0.71 LMH and 0.38 gMH, respectively, at 20 wt % aqueous solutions. Thus, this study is the first to examine the structural transformations of the bulkier alkyl group on the sulfonate anion moiety and its feasibility as the new draw solute for the FO system.

show abstract

“…Several very recent papers might mark a renewed interest in the subject [ 180 , 181 , 182 ]. An urgent problem that needs to be addressed in future studies is the relatively low water flow achieved until now by thermoresponsive IL/water desalination set ups.…”

Section: Applicationsmentioning

confidence: 99%

Thermoresponsive Ionic Liquid/Water Mixtures: From Nanostructuring to Phase Separation

et al. 2022

View full text Add to dashboard Cite

The thermodynamics, structures, and applications of thermoresponsive systems, consisting primarily of water solutions of organic salts, are reviewed. The focus is on organic salts of low melting temperatures, belonging to the ionic liquid (IL) family. The thermo-responsiveness is represented by a temperature driven transition between a homogeneous liquid state and a biphasic state, comprising an IL-rich phase and a solvent-rich phase, divided by a relatively sharp interface. Demixing occurs either with decreasing temperatures, developing from an upper critical solution temperature (UCST), or, less often, with increasing temperatures, arising from a lower critical solution temperature (LCST). In the former case, the enthalpy and entropy of mixing are both positive, and enthalpy prevails at low T. In the latter case, the enthalpy and entropy of mixing are both negative, and entropy drives the demixing with increasing T. Experiments and computer simulations highlight the contiguity of these phase separations with the nanoscale inhomogeneity (nanostructuring), displayed by several ILs and IL solutions. Current applications in extraction, separation, and catalysis are briefly reviewed. Moreover, future applications in forward osmosis desalination, low-enthalpy thermal storage, and water harvesting from the atmosphere are discussed in more detail.

show abstract

Forward osmosis with direct contact membrane distillation using tetrabutylphosphonium p-toluenesulfonate as an effective and safe thermo-recyclable osmotic agent for seawater desalination

Cited by 23 publications

References 65 publications

Influence of the anionic structure and central atom of a cation on the properties of LCST-type draw solutes for forward osmosis

Influence of the anionic structure and central atom of a cation on the properties of LCST-type draw solutes for forward osmosis

Effect of the Alkyl Chain Length on Assessment as Thermo-Responsive Draw Solutes for Forward Osmosis

Thermoresponsive Ionic Liquid/Water Mixtures: From Nanostructuring to Phase Separation

Contact Info

Product

Resources

About