Aquatech membrane technology for recovery of acid/base values for salt streams

Mani, Kalaivani; Chlanda, F.P.; Byszewski, Carolyn Huffer

doi:10.1016/0011-9164(88)80051-1

Cited by 88 publications

(40 citation statements)

References 4 publications

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“…Bipolar membrane electrodialysis is being developed by several companies, e.g. WSI Technologies Inc. [270] and Aquatech Systems [129,275,276]. Typical product specification ranges for the ICI electrodialysis process is summarized in Table 19.…”

Section: Two Compartment Cellmentioning

confidence: 99%

Electrochemistry for a better environment

Bersier¹,

Carlsson

Bersier³

1994

Topics in Current Chemistry

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Section: Two Compartment Cellmentioning

confidence: 99%

Electrochemistry for a better environment

Bersier¹,

Carlsson

Bersier³

1994

Topics in Current Chemistry

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“…This process is favored for treatment of spent acidic solutions containing metal salts (such as metal pickling liquors) without any waste disposal needed as it produces both hydroxide for metal precipitation and regenerated acid to recirculate to the process [111][112][113]. BMED was also applied for the splitting of sodium sulfate [114,[115][116][117], sodium chloride [9,[118][119][120][121], sodium chlorate [122,123], sodium nitrate [124], sodium and potassium iodide salts [125], KF in the production of uranium fluoride [126] to treat nitrate wastewaters [127,128], spent caustics to regenerate NaOH [129,130] and to produce silica acid from sodium metasilicate [131].…”

Section: Inorganic Acid and Base Production And Recoverymentioning

confidence: 99%

Ion-exchange membranes in chemical synthesis – a review

Jaroszek

Dydo

2016

Open Chemistry

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Abstract:The applicability of ion-exchange membranes (IEMs) in chemical synthesis was discussed based on the existing literature. At first, a brief description of properties and structures of commercially available ion-exchange membranes was provided. Then, the IEM-based synthesis methods reported in the literature were summarized, and areas of their application were discussed. The methods in question, namely: membrane electrolysis, electro-electrodialysis, electrodialysis metathesis, ionsubstitution electrodialysis and electrodialysis with bipolar membrane, were found to be applicable for a number of organic and inorganic syntheses and acid/base production or recovery processes, which can be conducted in aqueous and non-aqueous solvents. The number and the quality of the scientific reports found indicate a great potential for IEMs in chemical synthesis.

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“…( [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] This completes the proof of Lemma 1.…”

Section: Electrodiffusional Free Boundary Problem 639unclassified

Electrodiffusional free boundary problem, in a bipolar membrane (semiconductor diode), at a reverse bias for constant current

Primicerio¹,

Rubinstein²,

Zaltzman³

1999

Quart. Appl. Math.

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Abstract.A singular perturbation problem, modeling one-dimensional time-dependent electrodiffusion of ions (holes and electrons) in a bipolar membrane (semi-conductor diode) at a reverse bias is analyzed for galvanostatic (fixed electric current) conditions. It is shown that, as the perturbation parameter tends to zero, the solution of the perturbed problem tends to the solution of a limiting problem which is, depending on the input data, either a conventional bipolar electrodiffusion problem or a particular electrodiffusional time-dependent free boundary problem. In both cases, the properties of the limiting solution are analyzed, along with those of the respective boundary and transition layer solutions. Introduction.In our recent paper [1] we analyzed the electrodiffusional free boundary problem that arose asymptotically in the singularly perturbed model of electrodialysis for a vanishing perturbation parameter.This model concerned the passage of a specified direct electric current through a layer of univalent electrolyte adjacent to the wall (cathode, cation exchange membrane) selectively permeable to positive ions (cations) only. The simplest version of the governing equations was t > 0: pf = {p£x +pe4>%)x Vx€(0,l), Here p£(x,t), n£(x,t), cp£(x,t) are, respectively, the cation and anion (negative ions) concentrations and the electric potential. Equations (0.1) and (0.2) are the Nernst-Planck

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Aquatech membrane technology for recovery of acid/base values for salt streams

Cited by 88 publications

References 4 publications

Electrochemistry for a better environment

Electrochemistry for a better environment

Ion-exchange membranes in chemical synthesis – a review

Electrodiffusional free boundary problem, in a bipolar membrane (semiconductor diode), at a reverse bias for constant current

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