International Journal of Waste Resources

Reducing water consumption in beet distillery through condensate recycling after a membrane-based detoxification process

2^nd World Congress and Expo on Recycling

July 25-27, 2016 Berlin, Germany

Marie-Laure Lameloise

AgroParisTech, France

Posters & Accepted Abstracts: Int J Waste Resour

Abstract:

Food industry largely depends on water. Availability of good quality resource at a reasonable cost is a pregnant concern, as well as the limitation of effluents, source of matter loss and environmental disorders. Wastewater re-use/recycling may be a solution to face the issue. Low-charged wastewaters (rinsing water, condensates, etc) and process solutions (CIP solutions, brines, regeneration effluents) may be good candidates to recycling or re-use. However, food manufacturers are still reluctant to recycling and reusing water from wastes for different reasons including food safety. Continuous progress in membrane technologies (micro-, ultra -nanofiltration, reverse osmosis, electrodialysis) allow smart and cost-effective solutions to be investigated. The presentation will be illustrated by the case-study of beet distillery. Recycling of condensates arising from stillage concentration as dilution water in the fermentation step would allow significant groundwater sparing and the reduction of pregnant waste disposal problems. Removal of inhibitory molecules (acids, furan derivatives, phenolic compounds) toxic for the yeast can be achieved through convenient purification processes. According to the quality of the condensates, reverse-osmosis (RO) or a combination of RO with ion-exchange proves successful to recover high quality water suitable for the preparation of fermentation musts. Economic insights will also be provided.

Biography :

Email: marie-laure.lameloise@agroparistech.fr