Extraction of amphoteric amino acids by an electromembrane process. pH and electrical state control by electrodialysis with bipolar membranes
| Autor: | Claude Gavach, L. Bonnal, Roger Sandeaux, Nabil Mameri, H. Grib, Jacqueline Sandeaux |
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| Rok vydání: | 1998 |
| Předmět: |
chemistry.chemical_classification
Chromatography Renewable Energy Sustainability and the Environment General Chemical Engineering Organic Chemistry Extraction (chemistry) Phenylalanine Electrodialysis Pollution Membrane technology Amino acid Separation process Inorganic Chemistry Fuel Technology Membrane chemistry Glycine Waste Management and Disposal Biotechnology |
| Zdroj: | Journal of Chemical Technology & Biotechnology. 73:64-70 |
| ISSN: | 1097-4660 0268-2575 |
| Popis: | Electrodialysis (ED) with bipolar membranes (BPM) was applied for the extraction of amino acids in an electrically neutral form. Under voltage, BPM split water, generating hydroxyl ions at the anodic side and protons at the cathodic side. The use of these membranes represents a newer method to convert neutral species into electrically charged species that are able to cross homopolar ED membranes. The ED operations were performed using a laboratory cell with a membrane area of 50 cm2. A mixture containing five amino acids (Gly, Ser, Ala, Val, Phe) was examined. The concentration of each amino acid was 100 mmol dm−3. The current density and pH in the feed and receiver compartments were varied. Extraction degrees and current efficiencies were calculated and compared under different experimental conditions. © 1998 Society of Chemical Industry |
| Databáze: | OpenAIRE |
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