公开(公告)号：US20230159402A1

公开(公告)日：2023-05-25

申请号：US17917743

申请日：2021-03-31

Applicant: SHOWA DENKO K.K.

Inventor： Hiroshi UCHIDA ,  Ichiro FUJITA ,  Naoyuki SUGAWARA ,  Makoto SAITO

IPC: C05B11/10 ,  C05G1/00 ,  C05F11/00 ,  C05G3/00 ,  C08B37/08 ,  C08B15/00

CPC classification number: C05B11/10 ,  C05G1/00 ,  C05F11/00 ,  C05G3/00 ,  C08B37/003 ,  C08B15/00

Abstract: The present invention provides a method for efficiently obtaining a fertilizer containing polysaccharide hydrolysates and nutrients such as calcium, phosphoric acid, and nitrogen. The present invention is a method for manufacturing a fertilizer, characterized by comprising: a hydrolysis step for obtaining a mixture including polysaccharide hydrolysates through hydrolysis of polysaccharides using an acid catalyst; and a neutralizing step after the hydrolysis step for adding at least one basic compound selected from the group consisting of potassium salt, phosphate, ammonium salt, and ammonia.