Final disposal of VOCs from industrial wastewaters
- Occidential Chemical Corp., Grand Island, NY (United States)
- Fudan Univ., Shanghai (China)
Vapor phase carbon adsorption followed by spent carbon regeneration and catalytic oxidation were evaluated as methods for disposal of volatile organic compounds (VOCs) released from industrial wastewaters during treatment operations such as aeration, air-stripping and aerobic biodegradation. Adsorptive capacities and breakthrough characteristics for eight VOCs found in many hazardous landfill leachates and contaminated groundwater were compared for selection of the best adsorbent and optimum treatment conditions. Coconut shell-based activated carbons exhibited higher VOC loading capacities than coal-based carbons, fiber carbon, molecular sieve and zeolite. Steam and hot nitrogen were both effective for regeneration of the spent carbon. A small quantity of adsorbates left in the regenerated carbon did not result in immediate VOC breakthrough in the next cycle adsorption treatment. Catalytic oxidation was found to be an attractive alternative for VOC disposal. Using a new commercial catalyst developed for destruction of halogenated organic compounds, even stable VOCs such as trichloroethylene and tetrachloroethylene were completely destroyed at <350[degrees]C when oxidation was conducted at a space velocity of 17000/hr. 25 refs., 10 figs., 10 tabs.
- OSTI ID:
- 6917347
- Journal Information:
- Environmental Progress; (United States), Vol. 13:3; ISSN 0278-4491
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GROUND WATER
REMEDIAL ACTION
ORGANIC COMPOUNDS
REMOVAL
VOLATILE MATTER
BENZENE
CHLORINATED AROMATIC HYDROCARBONS
CHLOROFORM
METHYLENE CHLORIDE
ORGANIC HALOGEN COMPOUNDS
TOLUENE
ALKYLATED AROMATICS
AROMATICS
CHLORINATED ALIPHATIC HYDROCARBONS
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENATED AROMATIC HYDROCARBONS
HYDROCARBONS
HYDROGEN COMPOUNDS
MATTER
ORGANIC CHLORINE COMPOUNDS
OXYGEN COMPOUNDS
WATER
540220* - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)