Since decades, kieselguhr as filter aid is the most common method for beer filtration. However, despite satisfying results, kieselguhr seems to present drawbacks such as health hazards and increasing costs for disposal. Beer filtration using a regenerable synthetic filter aid seems to be an alternative to kieselguhr. In this field, oxidised high density polyethylene (PEox) is characterised and tested on a pilot candle filter. Results show an appreciable clarifying ability using PEox, whereas the use of an additive responsible for the formation of stable flocks allows to reach industrial expectations in term of haze. Regeneration of the oxidised polymer (PEox reg.) is also examined and is efficient without any alterations of its properties.
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