Title:
PHOSPHORIC ACID SUPPLYING MATERIAL FOR WATER CULTURE AND METHOD OF WATER CULTURE
Document Type and Number:
Japanese Patent JP2001178285
Kind Code:
A
Abstract:
To obtain a phosphoric acid supplying material for a water culture allowing to efficiently use elements such as phosphorus, calcium, magnesium and iron in a mutritious liquid and capable of suppressing generation of a slime and preventing water from being polluted by drains in the water culture and to provide a method of the water culture.
This phosphoric acid supplying material is composed by bonding a phosphate ion to a particulate containing a central part 1 composed of metallic iron, covered with a metallic organic compound 3 having an anion exchange group 2 at the terminal on the peripheral thereof and having 1-100 nm mean particle diameter by ions.
Inventors:
MIYA AKIKO
ONDA KENSUKE
HAO RINYUN
ONDA KENSUKE
HAO RINYUN
Application Number:
JP36775599A
Publication Date:
July 03, 2001
Filing Date:
December 24, 1999
Export Citation:
Assignee:
EBARA CORP
International Classes:
A01G31/00; B01J31/24; C05B17/00; C07B53/00; C07B61/00; C07F9/50; C07F9/53; C07F15/00; (IPC1-7): A01G31/00
Attorney, Agent or Firm:
Isamu Watanabe (1 person outside)