||Source assessment : cotton gins /
Rawlings, G. D. ;
Reznik., R. B.
||Monsanto Research Corp., Dayton, Ohio.;Industrial Environmental Research Lab.-Cincinnati, Ohio. Industrial Pollution Control Div.
|| Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service,
||EPA/600/2-78/004A; MRC-DA-726; EPA-68-02-1874
Air pollution ;
Cotton plants ;
Agricultural machinery ;
Process charting ;
Design criteria ;
Air pollution control ;
Industrial hygiene ;
Cotton gins ;
Air quality ;
Emission factors ;
Threshold limit values
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||xii, 68 p. : ill. ; 28 cm.
This report describes a study of air pollutants from cotton gins. Cotton gins separate cotton fibers from cottonseed and trash. During the 1976 crop year, 2.6 x 10 to the 6th power metric tons of lint cotton were ginned. Particulates composed of cotton dust, cotton lint, fine-leaf trash, and other trash are released to the atmosphere during each step of the ginning process. The average particulate emissions for the entire process is 3.14 g/kg of cotton ginned. Potential environmental effects from ginning were assessed by determining the source severity at a typical plant boundary. Severity is defined as the ratio of the ground level particulate concentration to a reduced TLV. Source severities for nine individual emission points at a typical gin ranged from 1 to 40, while the severity for one other point was less than 0.01. Cotton gins in the United States use a combination of cyclones, separators, condensers, and inline filters to separate cotton and trash from the conveying air stream and to reduce air emissions.
Prepared under contract 68-02-1874. Issued Jan. 1978. Includes bibliographical references. Microfiche.