Wet air oxidation

Journal Article · Sun Jan 01 04:00:00 EST 1995 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00040a001· OSTI ID:6550166

Mishra, V S; Mahajani, V V; Joshi, J B ^[1]

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1. Univ. of Bombay (India). Dept. of Chemical Technology

Wet air oxidation (WAO), involving oxidation at high temperature (125--320 C) and pressure (0.5--20 MPa) conditions, is useful for the treatment of hazardous, toxic, and nonbiodegradable waste streams. The process becomes self-sustaining when the feed chemical oxygen demand (COD) is about 20,000 mg/l and can be a net energy producer at sufficient higher feed COD's. All the published information on WAO has been analyzed and presented in a coherent manner. Wet air oxidation studies on pure compounds have been critically reviewed. Mechanism, kinetics, and structure-oxidizability correlation for WAO of carboxylic acids, phenols, cyanides, and nitriles have been described. The industrial applications discussed include municipal sewage sludge treatment, distillery waste treatment, black liquor treatment, cyanide and nitrile wastewater treatment, spent carbon regeneration, and energy and resource regeneration. Waste streams from other sources and some miscellaneous applications of WAO have also been included. Special emphasis is given to WAO under supercritical conditions (above the critical temperature of water) and oxydesulfurization of coal. In addition to the industrial applications, some other aspects (like various catalysts and oxidizing agents) of WAO have also been discussed. Recommendations and suggestions for further investigations have been made. 560 refs.

• OSTI ID: 6550166
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 34:1; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
320604 -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
DESULFURIZATION
DOCUMENT TYPES
ENERGY FACILITIES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HAZARDOUS MATERIALS
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
INDUSTRIAL WASTES
KINETICS
LIQUID WASTES
MANAGEMENT
MATERIALS
MUNICIPAL WASTES
OXYGEN COMPOUNDS
PROCESSING
REACTION KINETICS
RESOURCE RECOVERY FACILITIES
REVIEWS
SUPERCRITICAL STATE
TOXIC MATERIALS
USES
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PROCESSING PLANTS
WASTE WATER
WASTES
WATER
WET OXIDATION PROCESSES