Treatment of waste water from distilleries with chitosan

Purification of vinasse-containing water by an anion-exchange process has been described. The biopolymer chitosan has been used as anion-exchanger. Model experiments with different amounts of chitosan and different time of contact between the substrate and the waste water have shown a chitosan conce...

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Veröffentlicht in:Water research (Oxford) 2000-04, Vol.34 (5), p.1503-1506
Hauptverfasser: Lalov, Ivo Georgiev, Guerginov, Illia Illiev, Krysteva, Milka Asenova, Fartsov, Kiril
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Sprache:eng
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Zusammenfassung:Purification of vinasse-containing water by an anion-exchange process has been described. The biopolymer chitosan has been used as anion-exchanger. Model experiments with different amounts of chitosan and different time of contact between the substrate and the waste water have shown a chitosan concentration of 10 g l −1 and a contact time of 30 min to be the most suitable for the purification of the model waste water with a chemical oxygen demand (COD) of 2800 mg O 2 l −1. A laboratory column process of water purification has been realized on the basis of these parameters. The possibility of subsequent biomethanation of adsorbed organic acid anions on the ion exchanger by a direct adding of chitosan to an anaerobic bioreactor before and after preliminary hydrolysis has been demonstrated.
ISSN:0043-1354
1879-2448
DOI:10.1016/S0043-1354(99)00291-2