Reducing concentration of undesirable compound present in contaminated fermented drink e.g. wines and beers, comprises contacting drink in constant flow with adsorbent medium constituted of nanoporous granules with monodisperse granulometry

摘要

The process for reducing a concentration of an undesirable compound present in a contaminated fermented drink (11) such as wines, beers and liqueurs, comprises contacting the drink in constant flow with an adsorbent medium (1) constituted of nanoporous granules with monodisperse granulometry for a duration delta t, determining the concentration of the compound of the treated drink, and comparing the obtained concentration with a threshold value of concentration of a predetermined compound corresponding to non-contaminated drink. The process for reducing a concentration of an undesirable compound present in a contaminated fermented drink (11) such as wines, beers and liqueurs, comprises contacting the drink in constant flow with an adsorbent medium (1) constituted of nanoporous granules with monodisperse granulometry for a duration delta t, determining the concentration of the compound of the treated drink, and comparing the obtained concentration with a threshold value of concentration of a predetermined compound corresponding to non-contaminated drink. A diameter of the pores is 0.5-10 nm to selectively trap the undesirable compound having a corresponding size. The determined concentration is higher than the threshold value. The adsorbent medium is reticulated non-functional polystyrene, which has an internal surface higher than 1500 m2>/g. A reticulation rate of the polystyrene is higher than 50%. An external surface of the granule has a physico-chemical affinity to attract the undesirable compound present on an internal wall of the pores. The medium is regenerated after the determined concentration is higher than the threshold value.