detartrating

Verb

 * 1) * 2001, United States Patent #6,797,053, filed July 9, 2001:
 * The crude calcium tartrate used in the production of tartaric acid (min. 50% purity) is recovered from alkaline solutions resulting from the detartrating of wine vats (potentially containing 140-250 g tartaric acid/L) by acidification to a pH of maximum 8, addition of a calcium salt to precipitate calcium tartrate, and recycling of part of the filtrate.
 * The crude calcium tartrate used in the production of tartaric acid (min. 50% purity) is recovered from alkaline solutions resulting from the detartrating of wine vats (potentially containing 140-250 g tartaric acid/L) by acidification to a pH of maximum 8, addition of a calcium salt to precipitate calcium tartrate, and recycling of part of the filtrate.