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Main Title Color characterization before and after lime treatment /
Author Dugal, Hardev S., ; Leekley, Robert M. ; Swanson., John W.
Other Authors
Author Title of a Work
Leekley, Robert M.,
Swanson, John W.,
CORP Author Institute of Paper Chemistry, Appleton, Wis.;National Environmental Research Center, Corvallis, Oreg.;Office of Water Resources Research, Washington, D.C.
Publisher Office of Research and Development, U.S. Environmental Protection Agency, For sale by the Superintendent of Documents, U.S. Government Printing Office,
Year Published 1974
Report Number EPA-660/2-74-029; EPA-S-800853; W74-11793
Stock Number PB-235 493
OCLC Number 01846032
Subjects Paper industry--Waste disposal ; Sulfate waste liquor ; Aquatic liming ; Water quality management ; Paper-making and trade--Waste disposal ; Sulphate waste liquor
Additional Subjects Colors(Materials) ; Water pollution control ; Pulp mills ; Industrial waste treatment ; Sulfate pulping ; Black liquors ; Spent liquors(Pulping) ; Calcium oxides ; Precipitation(Chemistry) ; Additives ; Water analysis ; Chemical analysis ; Spectroscopic analysis ; Gas chromatography
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 660-2-74-029 Headquarters Library/Washington,DC 06/17/2013
EJBD  EPA 660-2-74-029 c.1 Headquarters Library/Washington,DC 09/18/2013
ELBD RPS EPA 660-2-74-029 repository copy AWBERC Library/Cincinnati,OH 02/18/2015
NTIS  PB-235 493 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xiii, 174 pages : graphs ; 27 cm.
Approximately 90 percent of the United States' chemical wood pulp is produced by the kraft pulping process. In spite of various measures taken to reduce pollution, kraft mill effluents discharged into streams are objectionable in color, and further improvements are needed to reduce the color of these effluents. The nature of color bodies in kraft mill effluents apparently has not been fully investigated. Presumably, two wastes are believed to be the main sources of color in the effluents; weak black liquor and effluent from the caustic extraction stages in the bleach plant. In addition, some color may form in the holding ponds. The present project has been divided into two parts. The first part has been concerned with the chemical and physical characterization of the color bodies in the mill effluents both before and after lime treatment. Effluents from two different mills were studied. Part of this report deals with the study of effluents from the International Paper Company (IPCO) mill at Springhill, Louisiana, and the Continental Can Company (CONCO) mill at Hodge, Louisiana. The second part of the project has been concerned with the lime treatment of mill effluents in the presence of multivalent ions. The objective was to establish conditions for an improved lime-treatment process using small amounts of multivalent ions of other metals in addition to lime.
Report prepared by The Institute of Paper Chemistry. "Project S 800853, program element 1BB037." "Prepared for Office of Research and Development, U.S. Enivironmental Protection Agency." Includes bibliographical references (pages 167-168).