Oxygen pollution prevention

COD Chemical oxygen demand PPIC Pollution prevention information clearinghouse... 

Pollution Prevention Minimal toxicity of effluents Good. Gas phase contains carbon dioxide, oxygen, and nitrogen and no dioxins. Sulfur, phosphorous, and chlorine remain in the liquid phase as dissolved salts, and oxygen probably does as well. The liquid phase also contains biodegradable organics. Solids produced can be stabilized, placed in drums, and disposed of in a permitted landfill. 

Pollution Prevention Minimal toxicity of effluents Good. Liquid effluent is evaporated, and salts are crystallized, put into drums, and sent to a hazardous waste landfill following TCLP testing. Gases (oxygen, nitrogen, and carbon dioxide) are filtered and released. Brines and salts are tested and put into drums and can be sent to hazardous waste landfill. Fate of arsenic compounds is an issue. 

The low concentrations of ozone normally present in the atmosphere are sufficient to cause severe oxidation and cracking in polyolefins (2-13) and many other polymers such as polystyrene (6,11,12,14.15). poly(vinyl chloride) ( y, J 2,J 6) and rubbers (11,12,17-20). Where the ozone concentration is increased by air pollution, higher altitudes or the present of electrical machinery, the rate of degradation considerably increases.The prevention of such degradation represents a matter of considerable economic interest since it can greatly improve service life of polymers and plastics. An additional application of this research is to apprise the suitability of polymers for upper atmosphere application (Space Shutle flights) where a plentitude of ozone and atomic oxygen prevails. 

It should also be mentioned that low oil viscosity at low temperatures is desirable in the new small 4 cylinder and V-6 cylinder fuel economy automobiles ( 5, 6). This is to permit sufficient speed of engine cranking for cold weather starting at winter temperatures. Low oil volatility must be maintained to prevent oil misting and blowby from poisoning the catalyst system and oxygen sensors in the anti-pollution devices (7). 

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