Usefulness of reverse osmosis in the treatment of condensates arising from the concentration of distillery vinasses
| Autor: | Marie-Laure Lameloise, Estelle Morin Couallier, Martine Decloux, Blanca Salgado Ruiz |
|---|---|
| Přispěvatelé: | Ingénierie Procédés Aliments (GENIAL), Institut National de la Recherche Agronomique (INRA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-AgroParisTech-Conservatoire National des Arts et Métiers [CNAM] (CNAM), Ecole Nationale Supérieure des Industries Agricoles et Alimentaires, Institut National de la Recherche Agronomique (INRA)-AgroParisTech-Conservatoire National des Arts et Métiers [CNAM] (CNAM)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) |
| Rok vydání: | 2006 |
| Předmět: |
[SDV]Life Sciences [q-bio]
General Chemical Engineering water 02 engineering and technology recycling Ethanol fermentation Furfural Membrane technology vinasses reverse osmosis chemistry.chemical_compound 020401 chemical engineering General Materials Science 0204 chemical engineering Reverse osmosis Water Science and Technology Chromatography Mechanical Engineering General Chemistry 021001 nanoscience & nanotechnology inhibition 6. Clean water wastewater treatment Membrane chemistry Titration Seawater Fermentation 0210 nano-technology |
| Zdroj: | Desalination Desalination, Elsevier, 2006, 196 (1-3), pp.306-317. ⟨10.1016/j.desal.2006.02.002⟩ |
| ISSN: | 0011-9164 1873-4464 |
| DOI: | 10.1016/j.desal.2006.02.002 |
| Popis: | This work forms part of a global study on the recycling into alcoholic fermentation of condensates arising from the concentration of vinasses. Its purpose is to demonstrate the usefulness of reverse osmosis (RO) in the treatment and exploitation of these condensates, i.e., elimination of the anti-fermentation molecules they contain (formic, acetic, propionic, butyric, valeric, hexanoic acids, 2,3-butanediol, furfural and phenyl-2-ethyl-alcohol) so that they could be recycled. The experimental system used was a DSS Labstack M20-0.72 filtration system with flat, Filmtec FT30 Sea Water (SW) membranes from Dow. As the inhibitory compounds include organic acids, the effect of pH was studied: trials at pH 3.0, 5.2, 7.5 and 10 were performed at 40 bar and 25–30°C, and monitored by chemical analysis and inhibition tests. Rejection coefficients were found to be higher than 85% for all compounds at pH >5. RO permeates arising from the treatment of condensates with a pH 7.5 and 10 proved not inhibitory. Because of a strong rise between 6 and 12 during the titration, working at pH higher than 6 needs a fine tuning of pH value or the use of membranes resisting high pH values. At pH 6, however, 10% inhibition is still present; in order to eliminate all traces of inhibition, it would then be necessary to envisage double RO or coupling with another process. |
| Databáze: | OpenAIRE |
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