||PCB emissions from stationary sources : a theoretical study /
||Monsanto Research Corp., Dayton, Ohio. Dayton Lab.;Industrial Environmental Research Lab., Research Triangle Park, N.C.
|| Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service,
||EPA 600-7-76-028; MRC-DA-577; EPA-68-02-1320
Ash content ;
Fossil fuels ;
Electric power plants ;
Chlorine organic compounds ;
Air pollution ;
Natural gases ;
Fuel oil ;
Reaction kinetics ;
Aromatic polycyclic hydrocarbons ;
Chemical analysis ;
Combustion products ;
Industrial wastes ;
Gas analysis ;
Fly ash ;
Air pollution detection ;
Coal-fired power plants ;
Stationary sources ;
||Region 3 Library/Philadelphia, PA
||Region 4 Library/Atlanta,GA
||Research Triangle Park Library/RTP, NC
||Region 10 Library/Seattle,WA
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||iv, 39 pages : illustrations ; 28 cm.
The report gives results of a theoretical assessment of polychlorinated biphenyl (PCB) formation and destruction in conventional fossil fuel fired sources. Results suggest a small but finite possibility that PCB isomers may be found in their emissions. The study was the result of concern caused by tentative identification of PCB isomers in ash and flyash from a utility steam generating boiler. The theoretical assessment concluded that: (1) PCB emissions are more likely from higher-chlorine content coal or residual oil combustion than from refined oil or natural gas; (2) PCB isomers with four or more chlorine atoms per molecule are more of an environmental hazard than those with three or less; (3) the probability of forming PCB isomers with four or more atoms of chlorine per molecule during combustion is restricted by the short residence times and low concentrations of chlorine available in many fossil fuels; (4) the amount of PCB emissions, if any, may be related to polynuclear aromatic hydrocarbon emissions; (5) based on the above, inefficient combustion control is more likely to produce PCB emissions than optimum conditions; and (6) the highest priority for field sampling and analysis of PCB from combustion sources should be for small- and medium-sized, hand- and underfeed-stoked coal furnaces.
Prepared by Monsanto Research Corporation under Contract No. 68-02-1320, Task 26, Program Element No. EHE624A. Issued Oct. 1976. "EPA 600-7-76-028." "Cover title." Includes bibliographical references (20-22).