Fate of commercial disperse dyes in sediments
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.
- Research Organization:
- Georgia Univ., Athens, GA (United States). Dept. of Textiles, Merchandising and Interiors
- OSTI ID:
- 6000860
- Report Number(s):
- PB-92-101401/XAB; CNN: EPA-R815415
- Resource Relation:
- Other Information: Pub. in Environmental Toxicology and Chemistry, v10 p1009-1017 Aug 91. Sponsored by Environmental Research Lab., Athens, GA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANTHRAQUINONES
ENVIRONMENTAL TRANSPORT
NITRO COMPOUNDS
QUINOLINES
SEDIMENTS
CONTAMINATION
AZO DYES
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL EFFECTS
HALF-LIFE
INDUSTRIAL WASTES
MONITORING
SEDIMENT-WATER INTERFACES
WATER POLLUTION
AROMATICS
AZAARENES
AZINES
AZO COMPOUNDS
DAYS LIVING RADIOISOTOPES
DYES
HETEROCYCLIC COMPOUNDS
INTERFACES
ISOTOPES
MASS TRANSFER
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
POLLUTION
PYRIDINES
QUINONES
RADIOISOTOPES
WASTES
YEARS LIVING RADIOISOTOPES
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)