Trace metal catalysis and the activation of molecular oxygen in aquatic environments

Conference · Tue Jan 01 04:00:00 EST 1980 · Am. Chem. Soc., Div. Environ. Chem., Prepr.; (United States)

OSTI ID:5447194

Hoffmann, M R

Trace metal catalysis and the activation of molecular oxygen in aquatic environments have applications in industrial and domestic water pollution control. The oxidation of the sulfite ion by oxygen gas, which is catalyzed by cobalt(II) salts, is used in mass transfer studies on aeration devices to obtain an initial depletion of dissolved oxygen. Catalytic autoxidation of sulfur dioxide by water-soluble aerosol-borne metals may be an important nonphotolytic pathway for the rapid formation of sulfuric acid aerosols. Hydrogen sulfide autoxidation is sensitive to catalysis by manganese(II), copper(II), iron(II), nickel(II), and cobalt(II) salts. Cobalt(II)-, nickel(II)-, and copper(II)-4,4',4'',4'''-tetrasulfophthalocyanine (TSP) homogeneously autoxidizes hydrogen sulfide and sulfur dioxide in aqueous solution. The catalytic activity of Co-TSP toward the autoxidation of substituted phenolics and benzaldehyde is comparable to the dioxygenase amd monooxygenase released by certain strains of Pseudomonas.

• Research Organization: Univ. of Minnesota, St. Paul
• OSTI ID: 5447194
• Report Number(s): CONF-800303-
• Conference Information: Journal Name: Am. Chem. Soc., Div. Environ. Chem., Prepr.; (United States) Journal Volume: 20:1
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
ALDEHYDES
AQUATIC ECOSYSTEMS
AQUEOUS SOLUTIONS
AROMATICS
BENZALDEHYDE
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL ACTIVATION
CHEMICAL REACTIONS
COLLOIDS
CONTROL
DISPERSIONS
ECOSYSTEMS
ELEMENTS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROXY COMPOUNDS
MASS TRANSFER
METALS
MIXTURES
NONMETALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHENOLS
POLLUTION CONTROL
SOLS
SOLUTIONS
SULFIDES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TRACE AMOUNTS
WATER POLLUTION CONTROL