Enhancement of the current efficiency for sodium hydroxide production from sodium sulphate in a two-compartment bipolar membrane electrodialysis system

Paleologou, Michael; Thibault, A.; Wong, Patrick; Thompson, Robert W.; Berry, Richard M.

doi:10.1016/s1383-5866(97)00018-x

Cited by 65 publications

(28 citation statements)

References 11 publications

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“…The current efficiency of a process is directly linked to proton leakage, ion leakage and equipment structure. This value of current efficiency is similar to the one obtained by Paleologou et al [25] with a two-compartment BMED process for the production of sodium hydroxide from sodium sulphate. However, these authors found that, for a sodium hydroxide concentration maintained at about 1 M in the basified compartment, the loss in current efficiency was 20%.…”

Section: Current Efficiency and Relative Energy Consumptionsupporting

confidence: 89%

Cationic balance and current efficiency of a three-compartment bipolar membrane electrodialysis system during the preparation of chitosan oligomers

Shee

Bazinet

2009

Journal of Membrane Science

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Section: Current Efficiency and Relative Energy Consumptionsupporting

confidence: 89%

Cationic balance and current efficiency of a three-compartment bipolar membrane electrodialysis system during the preparation of chitosan oligomers

Shee

Bazinet

2009

Journal of Membrane Science

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“…Alternatives to disposal have been developed, for instance production of Na 2 SO 4 and H 2 SO 4 by metathesis (Thompson et al, 1995), and production of NaOH and H 2 SO 4 by bipolar membrane electrodialysis, as discussed in detail by Paleologou et al (1997). Another potential option of H 2 SO 4 separation is the short-bed ion exchange process introduced by Bucher et al (2009), which enables the Na 2 SO 4 to be utilized in the pulping process and the sulfuric acid to be reused e.g.…”

Section: Recovery Boiler Esp Salt: Source Of Na and Smentioning

confidence: 99%

Separation, treatment and utilization of inorganic residues of chemical pulp mills

Kinnarinen

Golmaei

Jernström

et al. 2016

Journal of Cleaner Production

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a b s t r a c tThe major inorganic solid residues of chemical pulp mills include green liquor dregs, various lime residues, recovery boiler fly ash, and salt cake produced at the chlorine dioxide generator. Only a small proportion of these residues is currently utilized outside the mill area: landfill disposal and reuse at the mill are the most typically applied methods. The situation should be improved in the future for environmental and economical reasons. The focus of this review is on the separation of inorganic pulp mill residues to enhance the possibilities of their utilization. Solid-liquid separation operations, such as filtration and sedimentation, and the associated treatment processes, are described in close detail. The review aims at recognizing the most promising residues for utilization, as well as enhancing the understanding of the material balance of chemical pulp mills. The review also covers the most potential industrial applications for the utilization of residues, as well as the possibilities of using them as raw material in value-added products.

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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]. However, despite lower energy requirements reported, BMED still possesses many of the disadvantages of EED/EM [132].…”

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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Enhancement of the current efficiency for sodium hydroxide production from sodium sulphate in a two-compartment bipolar membrane electrodialysis system

Cited by 65 publications

References 11 publications

Cationic balance and current efficiency of a three-compartment bipolar membrane electrodialysis system during the preparation of chitosan oligomers

Cationic balance and current efficiency of a three-compartment bipolar membrane electrodialysis system during the preparation of chitosan oligomers

Separation, treatment and utilization of inorganic residues of chemical pulp mills

Ion-exchange membranes in chemical synthesis – a review

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