Volatile Fatty Acids Production From Winery
Wastewaters By Acidogenic Fermentation
Author(s)
F. J. Fernández, D. Infantes, I. Buendía & J. Villaseñor
Abstract
The aim of this work was to evaluate the feasibility of the acidogenic
fermentation of the winery wastewater to produce Volatile Fatty Acids (VFA).
To do that the winery wastewater was characterised in different seasons. The
wastewater generated during the vintage presented the best characteristics
because it was mainly characterised by its high sugar concentration. Glucose and
fructose were the main components with their concentrations being about 1.5 g
m-3. Two kinds of experiments were carried out. In these experiments, the
fermentation of each one of the main organic substrates in the winery wastewater
– glucose and fructose – were studied separately. As result of these experiments,
the potential VFA production from the winery wastewater was evaluated. The
potential production of these VFA from the winery wastewater generated in
Castilla-La Mancha were the following: acetic acid, about 4000 tons, butyric
acid, about 1850 tons, and propionic acid, about 370 tons.
Keywords: winery wastewaters, acidogenic fermentation, mixed culture, VFA
production.
1 Introduction
In Mediterranean countries, agro-industries play a significant role, one of the
most representative being the winery industry. The winery industry represents a
considerable share of the Spanish economy, mainly in Castilla-La Mancha and
La Rioja. Nowadays, Castilla-La Mancha is the highest grape producer in Spain
representing 53% of the national production. In 1994, 1.2 million tons of grapes
were produced; however, this production had trebled by 2004, with 3.7 million
tons being produced.
Keywords
winery wastewaters, acidogenic fermentation, mixed culture, VFA
production.
Related Book
Other papers in this volume
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