Macrowine 2021
IVES 9 IVES Conference Series 9 Development of a new sustainable filtering media for wine and beer clarification and sterilisation

Development of a new sustainable filtering media for wine and beer clarification and sterilisation

Abstract

Different separation techniques are frequently used during vinification process. Nowadays, clarification and microbiological stabilization of wine or beer can be done using precoat filters or crossflow filters to remove yeast and bacteria. Kieselguhr powders are the most used filter aids for precoat filtration. Their crystalline structure and their pulverulent nature induce ecotoxicological risks when used. Moreover, regeneration and reuse of these filter aids is not efficient and the filtration waste requires cost effective retreatment. According to crossflow filtration, microfiltration membranes have a low porosity inducing low permeate fluxes. An increase in these fluxes during filtration would induce a reduction in the number of cleaning cycles and the size of the facilities. The aim of the project is to develop new eco-friendly processes to replace Kieselguhr and microfiltration membranes. This new media would allow a more sustainable wine and beer filtration (clarification and sterilization). Economically, socially and ecologically aspects are taken into account. Powders made of bio-based polymer, polyamide 11 potentially cleanable, reusable and recyclable, are studied as an alternative to Kieselguhr. The first step consists in selecting powders with different granulometry to carry out the different type of filtration – rough filtration, clarification and fine filtration – without distorting the wine. Non-woven media composed of submicron sized fibers are tested for the filtration. Indeed, the fineness of their fibers allows them to increase the porosity without changing pore size and therefore increase the filtration permeate flux keeping good retention efficiency. Various characteristics such as structural properties and efficiency feature are investigated and both physical chemistry aspects and sensory analysis will be considered. First trials are interesting and need to be confirmed at a larger scale.

Publication date: May 17, 2024

Issue: Macrowine 2016

Type: Poster

Authors

Marie Blackford*, Martine Mietton-Peuchot, Remy Ghidossi

*ISVV

Contact the author

Tags

IVES Conference Series | Macrowine | Macrowine 2016

Citation

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