Remove Pb from White Wine

Lead (Pb) is a kind of metal with strong toxicity. If the content is 0.04g, it can cause acute poisoning, and 20g can cause death. Because lead has the effect of accumulation, if each person takes 10mg lead every day, it can cause poisoning in a short time, which can lead to headache, dizziness, memory loss and poor sleep, weak grip strength, anemia, abdominal distension and constipation. Pb can enter the body from breathing, drinking water and other foods. Therefore, in formulating the hygienic standard of liquor, the factors of lead entering human body through various ways were considered, and the content of lead was clearly defined.

The lead in liquor mainly comes from the dissolution of lead in distiller, condensing tube and liquor container. The higher the lead content of the above utensils, and the higher the acidity of the wine, the greater the lead dissolution. However, when lead and its compounds enter the body, they will cause harm to nervous, hematopoietic, digestive, renal, cardiovascular and endocrine systems, and lead poisoning may occur if the amount is too high. Therefore, removing lead from food is crucial.

In order to reduce the lead content of liquor, the production management should be strengthened to avoid the pollution in the process of production equipment. Add 0.2% of gypsum in liquor or bran, stir well, and filter it with multi-layer flannelette after 1 hour of standing, which can remove the lead from the liquor. However, such treatment will affect the flavor of the liquor. Unlike traditional adsorption materials (resin, activated carbon), Si-novation functional silica material has multi-functional groups that can effectively adsorb and remove lead from liquor without damaging the flavor.

General lead removal methods include oxidation, co-precipitation, adsorption, reverse osmosis, etc. Unlike traditional adsorption materials (resin, activated carbon), Si-novation functional silica material has multi-functional groups that can effectively adsorb and remove lead and can be reused.

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