Significance of thermodynamic and physical characteristics on permeation of ions during membrane separation: Hydrated radius, hydration free energy and viscous effects

Tansel, Berrin

doi:10.1016/j.seppur.2011.10.033

Cited by 548 publications

(284 citation statements)

References 38 publications

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“…NaCl, KCl and MgCl 2 have the common anion of Cl − , therefore the different water activity should be attributed to the respective cation characteristics and the cation-solvent interactions. It is believed that Mg 2+ has the smallest ionic radius and entropy of hydration among Na + , K + and Mg 2+ , while its hydrated radius and hydration free energy is the biggest [23]. In addition, K + has the smaller ionic radius and entropy of hydration but bigger hydrated radius and hydration free energy than Na + [23,24].…”

Section: Vapor Pressure Depressionmentioning

confidence: 99%

Influence of salt concentration on DCMD performance for treatment of highly concentrated NaCl, KCl, MgCl2 and MgSO4 solutions

Guan

Cheng

et al. 2015

Desalination

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Section: Vapor Pressure Depressionmentioning

confidence: 99%

Influence of salt concentration on DCMD performance for treatment of highly concentrated NaCl, KCl, MgCl2 and MgSO4 solutions

Guan

Cheng

et al. 2015

Desalination

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“…A potential explanation for the observed selectivity can be found in the size of the hydrated radii of the cations ( Figure 5B). Divalent cations have larger hydrated radii than monovalent ions, and for monovalent cations the hydrated radius is smallest for Na + and K + ions, while the hydrated radii of Li + and NH 4 [42] demonstrate the high size selectivity of this system. QCM-D was used to quantify the amount of bound cations and to determine the specificity of the binding with static, ex situ measurements.…”

Section: Size-selective Binding Of Salt Ions From Aqueous Solutionsmentioning

confidence: 95%

“…B) The hydrated radius of several cations, taken from the literature. [42] to be 7 ± 2% ( Figure 6B). It was found that Li + and Ba 2+ ions occupy 3 ± 7% and 5 ± 2% of the carboxylic acid sites, respectively, less than the nonspecific binding of the Na + ions.…”

Section: Size-selective Binding Of Salt Ions From Aqueous Solutionsmentioning

confidence: 99%

Size‐Selective Binding of Sodium and Potassium Ions in Nanoporous Thin Films of Polymerized Liquid Crystals

Bögels

Lugger

Goor

2016

Adv Funct Materials

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The development of a nanoporous material from a columnar liquid crystalline complex between a polymerizable benzoic acid derivative and a 1,3,5‐tris(1H‐benzo[d]imidazol‐2‐yl)benzene template molecule is described. The morphology of the liquid crystalline complex is retained upon polymerization and quantitative removal of the template molecule affords a nanoporous material with the same lattice parameters. The nanoporous material selectively binds cations from aqueous solution, with selectivity for sodium and potassium ions over lithium and barium ions, as shown with FT‐IR. Binding is also quantified gravimetrically with a quartz crystal microbalance with dissipation monitoring, a technique that is used for this purpose for the first time here.

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“…Ions having a strong interaction with water molecules are more easily incorporated in the ice phase during freezing. Thus, ions with smaller energy of hydration have less association with water and hence high removal percentage (Hummer et al 1996;Tansel 2012;Kang et al 2014). …”

Section: Nm = Not Measuredmentioning

confidence: 99%

Freeze Desalination as Point of Use Water Treatment Technology: A Case of Chromium (VI) Removal from Water

Melak

Ambelu

Laing

et al. 2017

The 2nd International Electronic Conference on Water Sciences

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Options to develop tanning industries could be hindered even in the presence of huge leather industry raw materials due to the requirements of high-tech contaminant removal technologies, especially in developing countries. This study was initiated to investigate the efficiency of freeze desalination for Cr(VI) removal using refrigerators to generate fresh water. Synthetic solutions that represent major ion compositions of drinking water as well as deionized water to which known concentrations of Cr(VI) spiked into it, were added and frozen in a closed freezer unit. The effects of different parameters such as initial concentration, freeze duration, ice nucleation, fraction of ice volume, and influence of co-occurring ions were evaluated in relation to the quality of produced ice. The physicochemical characteristics of the produced meltwater were also evaluated. A high total water recovery of up to 85% was achieved in the experimental evaluation. Cr(VI) removal efficiency of up to 80% from simulated tap and 93 to 97% for deionized water spiked with Cr(VI) were found in this batch partial freezing. Freeze desalination was found to be relatively viable desalination technology in terms of quality of water produced, options on the use of cost effective refrigerants and technologies which could have a pertinent importance to save energy consumption of freezers.

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Significance of thermodynamic and physical characteristics on permeation of ions during membrane separation: Hydrated radius, hydration free energy and viscous effects

Cited by 548 publications

References 38 publications

Influence of salt concentration on DCMD performance for treatment of highly concentrated NaCl, KCl, MgCl2 and MgSO4 solutions

Influence of salt concentration on DCMD performance for treatment of highly concentrated NaCl, KCl, MgCl2 and MgSO4 solutions

Size‐Selective Binding of Sodium and Potassium Ions in Nanoporous Thin Films of Polymerized Liquid Crystals

Freeze Desalination as Point of Use Water Treatment Technology: A Case of Chromium (VI) Removal from Water

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