Search Results - "Holdik, H."

Development of a supported liquid membrane process for separating enantiomers of N-protected amino acid derivatives by Maximini, A., Chmiel, H., Holdik, H., Maier, N.W.

“…A continuous supported liquid membrane (SLM) process was developed to separate enantiomers of racemic N-protected amino acid derivatives using the advantages…”
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Chromic acid recovery by electro-electrodialysis I. Evaluation of anion- exchange membrane by Frenzel, I, Holdik, H, Stamatialis, D F, Pourcelly, G, Wessling, M

“…Electro-electrodialysis (EED) is a promising technology for economic recovery of chromic acid in plating shops. It could potentially achieve chromic acid…”
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Chromic acid recovery by electro-electrodialysis II. Pilot scale process, development, and optimization by FRENZEL, I, HOLDIK, H, STAMATIALIS, D. F, POURCELLY, G, WESSLING, M

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Ion selectivity and water dissociation in polymer bipolar membranes studied by membrane potential and current–voltage measurements by Alcaraz, A., Ramı́rez, P., Mafé, S., Holdik, H., Bauer, B.

“…A polymer bipolar ion-exchange membrane consists of a layered structure involving one cation and one anion ion-exchange layer joined together in series. In…”
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Chromic acid recovery by electro-electrodialysis by Frenzel, I., Holdik, H., Stamatialis, D.F., Pourcelly, G., Wessling, M.

“…Electro-electrodialysis is a promising technology for chromic acid recovery and static rinse water purification. It combines the recovery of the plating…”
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Electric field enhanced water dissociation at the bipolar membrane junction from ac impedance spectra measurements by Holdik, H, Alcaraz, A, Ramı́rez, P, Mafé, S

“…Preliminary experimental results of the ac impedance spectra of a bipolar ion-exchange membrane are reported and interpreted on the basis of a previous…”
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Chromic acid recovery by electro-electrodialysis by Frenzel, I., Holdik, H., Stamatialis, D.F., Pourcelly, G., Wessling, M.

“…Electro-electrodialysis (EED) is a promising technology for economic recovery of chromic acid in plating shops. It could potentially achieve chromic acid…”
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Electrochemical reduction of dilute chromate solutions on carbon felt electrodes by FRENZEL, Ines, HOLDIK, Hans, BARMASHENKO, Vladimir, STAMATIALIS, Dimitrios F, WESSLING, Matthias

“…Carbon felt is a potential material for electrochemical reduction of chromates. Very dilute solutions may be efficiently treated due to its large specific…”
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Chromic acid recovery by electro-electrodialysisI. Evaluation of anion-exchange membrane by FRENZEL, I, HOLDIK, H, STAMATIALIS, D, POURCELLY, G, WESSLING, M

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AC impedance spectra of bipolar membranes: an experimental study by Alcaraz, Antonio, Holdik, Hans, Ruffing, Thomas, Ramı́rez, Patricio, Mafé, Salvador

“…A bipolar membrane (BM) is composed of one cation and one anion ion-exchange layers joined together in series. In order to obtain the AC electrical impedance…”
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