| 摘要 |
The invention relates to a method for reducing potassium content in vinasse, which is a by-product from a sugar production or fermentation process, such as bioethanol or yeast production. The method comprises obtaining a process solution comprising vinasse, adding ammonium sulphate to the process solution under agitation in order to precipitate the potassium in vinasse, and separating a potassium-rich precipitate from the process solution. Ammonia is added in excess to the process solution in order to raise p H of the process solution to a value > 7 before precipitate separation. The invention relates also to use of the method and a precipitate and process solution produced. |
