Catalytic purification of wastewaters containing formaldehyde, methyl alcohol, and acetone

Journal Article · Sun Jan 10 00:00:00 EST 1982 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6729004

Rachkovskaya, L N; Anisiforov, G I; Levitskii, E A; Kundo, N N

A catalytic method for purification of wastewaters containing alcohols, aldehydes, and ketones is described in the literature. A current of steam containing gaseous organic compounds is passed over a complete-oxidation catalyst at temperatures of 250-700/sup 0/C. The organic compounds are oxidized to carbon dioxide. The main drawback of this method is that the wastewater must be evaporated and the vapor heated to high temperatures, involving a high consumption of fuel. Methods of liquid-phase catalytic oxidation under pressure are free from this drawback. A patent describes liquid-phase oxidation of phenol, analine, nitrobenzene, glycol, and dimethylformamide at temperatures of 275-300/sup 0/C under air pressures up to 100 atm in presence of oxides of copper, chromium, and zinc; a metallic catalyst consisting of copper, chromium, and manganese; copper oxide deposited on magnesium silicate. In a contact time of 8-10 min the degree of oxidation is 90-99%. It is known that liquid-phase oxidation of formaldehyde without a catalyst at 200/sup 0/C and 120 atm with a contact time of 4 h results in 80% oxidation of formaldehyde to methyl formate undergoes 10% conversion into acetic acid, while methyl alcohol is not oxidized at all. In this communication we describe liquid-phase catalytic oxidation of model wastewater containing formaldehyde, methyl alcohol, and acetone at temperatures up to 250/sup 0/C and oxygen pressures up to 20 atm.

• OSTI ID: 6729004
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Vol. 54:7; Other Information: Translated From Zh. Prikl. Khim.; 54: No. 7, 1619-1620 (Jul 1981)
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
54 ENVIRONMENTAL SCIENCES
AQUEOUS SOLUTIONS
OXIDATION
CATALYTIC EFFECTS
QUANTITATIVE CHEMICAL ANALYSIS
WASTE WATER
PURIFICATION
ACETONE
EXPERIMENTAL DATA
FORMALDEHYDE
HIGH TEMPERATURE
KETONES
METHANOL
PARTICLE SIZE
POWDERS
ALCOHOLS
ALDEHYDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
DATA
DISPERSIONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
LIQUID WASTES
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SIZE
SOLUTIONS
WASTES
WATER
424000* - Engineering- Pollution Control Equipment- (1980-1989)
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)