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Main Title Fate of Commercial Disperse Dyes in Sediments.
Author Yen, C. P. C. ; Perenich, T. A. ; Baughman, G. L. ;
CORP Author Georgia Univ., Athens. Dept. of Textiles, Merchandising and Interiors.;Environmental Research Lab., Athens, GA.
Publisher c1991
Year Published 1991
Report Number EPA-R815415; EPA/600/J-91/219;
Stock Number PB92-101401
Additional Subjects Water pollution sampling ; Sediments ; Dyes ; Environmental effects ; Reaction kinetics ; Sediment-water interfaces ; Environmental transport ; Reduction(Chemistry) ; Industrial wastes ; Azo dyes ; Anthraquinones ; Colloid chemistry ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB92-101401 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 11p
Kinetics of disappearance of seven different disperse dyes were determined in compacted sediments at room temperature. The commercial dyes (in dispersed solid form) were representative of nitroazo, anthraquinone, and quinoline structures that are widely used. Reaction rates were found to be first order over at least two half-lives and were different for the three groups of dyes. Half-lives were on the order of hours, days and months for the nitroazobenzene, aminoanthraquinone, and quinoline dyes, respectively. Stability of the latter is consistent with detection of a quinoline dye in treatment plant sludge and in sediment from a water body receiving treated effluent. The azobenzene dyes are degraded by cleavage of the azo group to give anilines and ring-substituted phenylenediamines from the diazo component of the molecule. Products from the other portion (coupling component) of the molecule are unidentified, as yet, but are expected to be N,N-disubstituted phenylenediamines. Products of the anthraquinone dyes were unidentified, except for the case of a nitrated dye on which the nitro group was reduced.