Title:
【発明の名称】廃液処理法
Document Type and Number:
Japanese Patent JP2913407
Kind Code:
B2
Abstract:
Alkyl phosphates, undiluted or dissolved in hydrophobic solvents are destroyed in situ by reaction with hydrogen peroxide in the presence of a catalyst system comprising a chromium compound, which dissolves in the aqueous phase, typically an alkali metal chromate, which is employed in conjunction with introduction of an alkali, preferably sodium hydroxide, or in the presence of an alkali buffer to keep the pH of the aqueous phase within a window spanning mildly acidic to mildly alkaline pH during the course of progressive introduction of the hydrogen peroxide, which often lasts from 3 to 10 hours, thereby enabling the oxidation of the alkyl phosphate to continue. The reaction is preferably carried out at a temperature of at least 60C, and particularly at about 65 to 75C, or at about the boiling point of the aqueous phase.
Inventors:
KENESU TOMASU ROOBOTOMU
JOON NIKORASU RARUFU UIRUKINSON
TERENSU MITSUCHERU KONBOI
GURAHAMU BIKUTAA HATOSON
JOON NIKORASU RARUFU UIRUKINSON
TERENSU MITSUCHERU KONBOI
GURAHAMU BIKUTAA HATOSON
Application Number:
JP12410289A
Publication Date:
June 28, 1999
Filing Date:
May 17, 1989
Export Citation:
Assignee:
SORUBEI INTEROTSUKUSU LTD
International Classes:
A62D3/38; B01J23/26; C02F1/72; C02F1/58; G21F9/06; A62D101/26; (IPC1-7): C02F1/72; B01J23/26; C02F1/58
Attorney, Agent or Firm:
Masamitsu Akizawa (1 person outside)