公开(公告)号：EP3696142A1

公开(公告)日：2020-08-19

申请号：EP19156620.7

申请日：2019-02-12

申请人： Stichting Wageningen Research ,  Nijhuis Water Technology B.V.

发明人： REGELINK, Inge Catharina ,  SCHOUMANS, Oscar Frédéric ,  SMITH, Gerrit Oopke Jan ,  EVERLO, Sjoerd Johannes Gerardus

IPC分类号： C01B25/45 ,  C05B11/08 ,  C02F11/04

摘要： The present invention relates to a method for extracting phosphorus from organic matter, the method comprising (a) providing phosphorus-containing organic matter, wherein the organic matter further contains calcium and/or iron; (b) adding acid and sulphate-containing water to the organic matter provided in step (a) to solubilize phosphorus, allow calcium sulphate and/or iron sulphate to form, and obtain a slurry; (c) separating the slurry obtained in step (b) into a solid fraction having a water content of at most 80 wt.%, and a liquid fraction having a water content of at least 80 wt.%; (d) adding a magnesium-containing base to the liquid fraction as obtained in step (c) to obtain phosphorus precipitate in the form of struvite.