| Main Title |
Studies of low molecular weight lignin sulfonates / |
| Author |
Glasser, Wolfgang G., ;
Gratzl, Josef S. ;
Forss, Kaj ;
Hrutfiord, Bjorn F. ;
Johanson., Lennart N.
|
| CORP Author |
Washington Univ., Seattle. Dept. of Chemical Engineering.;Pacific Northwest Environmental Research Lab., Corvallis, Oreg. |
| 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-660/2-74-069; EPA-12040-DEH |
| Stock Number |
PB-239 368 |
| OCLC Number |
02036593 |
| Subjects |
Sulfite pulping process ;
Wood-pulp industry--Waste disposal ;
Lignin ;
Sulphite pulping process
|
| Additional Subjects |
Lignin ;
Sulfonates ;
Spent sulfite liquors ;
Industrial wastes ;
Chemical composition ;
Chemical structure ;
Separation ;
Molecular weight
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 660-2-74-069 |
c.1 |
Headquarters Library/Washington,DC |
11/20/2012 |
| ELBD ARCHIVE |
EPA 660-2-74-069 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD RPS |
EPA 660-2-74-069 |
repository copy |
AWBERC Library/Cincinnati,OH |
03/30/2015 |
| NTIS |
PB-239 368 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
viii, 83 pages : illustrations ; 27 cm. |
| Abstract |
Low molecular weight lignin sulfonates have been separated in purified form and characterized by physicochemical and chemical methods. Their structure and reactions have been evaluated. Lignin sulfonates from the spent sulfite liquor of a mild acid bisulfite cook of Western Hemlock (Tsuga heterophylla) were purified and fractionated in Sephadex G-25 column chromatography. Complete elemental and functional group compositions were established for lignin sulfonates from a spent sulfite liquor and compared to those from milled wood lignin preparation. Extended separation studies indicated the low molecular weight lignin sulfonates to be the reaction product of a difunctional vinyl-type polymerization. The feasibility of large scale separations was determined using (1) the extraction and precipitation of the dry matter in a spent sulfite liquor with alcohol, and (2) the fractionation of the material by ion exclusion in a column arrangement. |
| Notes |
"June 1974." "Project officer, Dr. H. Kirk Willard, Pacific Northwest Environmental Research Laboratory." U.S. G.P.O. sales statement incorrect in publication. Includes bibliographical references (pages 77-79). For the Office of Research and Development, U.S. Environmental Protection Agency |
