Chromic acid recovery by electro-electrodialysisI. Evaluation of anion-exchange membrane

Frenzel, I.; Holdik, H.; Stamatialis, Dimitrios; Pourcelly, G.; Weßling, Matthias

doi:10.1016/j.memsci.2005.03.031

Cited by 42 publications

(32 citation statements)

References 29 publications

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“…Acid production efficiency increased in the following order: HNO 3 > HCl > H 2 SO 4 [96,97]. ME was also used to recover NaOH from sodium sulfate [98] and to recover chromic acid from spent chromic/sulfuric acid etch baths [99,100]. In the latter case, however, presence of oxidative chromic acid solution significantly decreased AEM lifetime and EED was proposed as a better solution [101].…”

Section: Inorganic Acid and Base Production And Recoverymentioning

confidence: 99%

“…In the latter case, however, presence of oxidative chromic acid solution significantly decreased AEM lifetime and EED was proposed as a better solution [101]. In EED, CrO 4 2-is transported through AEM to the anolyte, where chromic acid is recovered [99,102]. Diluted sulfuric acid may be introduced to the catholyte to prevent precipitation of metal hydroxides and CEM blockage [99,103].…”

Section: Inorganic Acid and Base Production And Recoverymentioning

confidence: 99%

“…In EED, CrO 4 2-is transported through AEM to the anolyte, where chromic acid is recovered [99,102]. Diluted sulfuric acid may be introduced to the catholyte to prevent precipitation of metal hydroxides and CEM blockage [99,103]. EED was also successfully applied for the splitting of alkali sulfates into sulfuric acid and a hydroxide [13,14,104], NaCl into HCl and NaOH [105], conversion of ammonium nitrate from wastewaters into ammonia and nitric acid [106-Unauthenticated Download Date | 5/11/18 5:27 AM 108], and regeneration of NaOH from spent caustics [130].…”

Section: Inorganic Acid and Base Production And Recoverymentioning

confidence: 99%

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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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Section: Inorganic Acid and Base Production And Recoverymentioning

confidence: 99%

Section: Inorganic Acid and Base Production And Recoverymentioning

confidence: 99%

Section: Inorganic Acid and Base Production And Recoverymentioning

confidence: 99%

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Ion-exchange membranes in chemical synthesis – a review

Jaroszek

Dydo

2016

Open Chemistry

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“…Electrodialysis (ED) has been explored for treating plating effluents (Marder et al, 2004;Korzenowski et al, 2008;Frenzel et al, 2005;Chiapello and Gal, 1992), acid mine drainage (Buzzi et al, 2013), and effluents containing organic compounds, such as organic acids (Severo Júnior, Alves e Ferraz, 2014), effluents of tanneries and of refineries (Machado, 2008). As it can be seen, several studies were developed involving the application of the ED, or ED along with other techniques, such as ion exchange resins (Gayathri and Senthil Kumar, 2010).…”

Section: Introductionmentioning

confidence: 99%

Current-Voltage Curves for Treating Effluent Containing Hedp: Determination of the Limiting Current

Scarazzato

Buzzi

Bernardes

et al. 2015

Braz. J. Chem. Eng.

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-Membrane separation techniques have been explored for treating industrial effluents to allow water reuse and component recovery. In an electrodialysis system, concentration polarization causes undesirable alterations in the ionic transportation mechanism. The graphic construction of the current voltage curve is proposed for establishing the value of the limiting current density applied to the cell. The aim of this work was to determine the limiting current density in an electrodialysis bench stack, the function of which was the treatment of an electroplating effluent containing HEDP. For this, a system with five compartments was used with a working solution simulating the rinse waters of HEDP-based baths. The results demonstrated correlation between the regions defined by theory and the experimental data.

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“…have been employed to remove Cr(VI) from wastewater [3][4][5][6][7][8]. These methods usually consume a large amount of electricity or chemicals and may produce secondary pollution, such as concentrated Cr(VI) wastewater [9].…”

Section: Introductionmentioning

confidence: 99%