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Ozonation of vinasse in acid and alkaline media

✍ Scribed by MA Martín Santos; JL Fernández Bocanegra; A Martín Martín; I García García

Publisher
Wiley (John Wiley & Sons)
Year
2003
Tongue
English
Weight
138 KB
Volume
78
Category
Article
ISSN
0268-2575

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✦ Synopsis

Abstract

The production of ethanol by fermentation and subsequent distillation generates wastewater known as ‘vinasse’. This waste is highly polluting on account of its high organic load and antibacterial activity—which arises from the presence of phenolic compounds that reduce the efficiency of the detoxification treatments best suited to this type of waste (eg anaerobic digestion). This can be avoided by using a pre‐treatment based on a chemical oxidant (ozone) at an acid or alkaline pH. Ozonation in acid media provides more selective elimination of phenolic compounds and a more readily biodegradable waste (ie an increased BOD~5~/COD ratio). Copyright © 2003 Society of Chemical Industry

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