The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2022
Filed:
Aug. 18, 2016
Compagnie Industrielle DE LA Matiere Vegetale—cimv, Neuilly sur Sein, FR;
Bouchra Benjelloun Mlayah, Pompertuzat, FR;
Michel Delmas, Auzeville-Tolosane, FR;
Laurence Llovera, Castanet Tolsan, FR;
Alvaro Tejado Etayo, Estella, FR;
COMPAGNIE INDUSTRIELLE DE LA MATIERE VEGETALE—CIMV, Neuilly sur Seine, FR;
Abstract
Disclosed is a process for the extraction of silica from lignocellulosic plant matter, including the steps of: a) fractionating the lignocellulosic plant matter in the presence of an acid solution, so as to obtain a solid fraction including cellulose; b) extracting the silica from the solid fraction obtained in step a) with a basic solution, at a pH between 10 and 13 and at a temperature between 70° C. and 90° C., so as to obtain a liquid phase including silica and a solid phase; c) separating the liquid phase and of the solid phase which are obtained in step b); and d) precipitating the silica which is included in the liquid phase, at a pH between 5 and 6.