Analytical procedures for the determination of disperse azo dyes
- Environmental Protection Agency, Las Vegas, NV (USA)
- Lockheed Engineering and Management Services Co., Las Vegas, NV (USA)
Disperse Blue 79 is the most widely-used azo dye in the US. Its economic importance for the dye industry and textile industry is very great. Because of its use and potential for degradation to aromatic amines, this compound has been chosen for testing by the Interagency Testing Committee. The authors laboratory has been developing methods for the analytical determination of Disperse Blue 79 and any possible degradation products in wastewater. This work has been taking place in conjunction with the study of the fate of azo dyes in the wastewater treatment processes by the Water Engineering Research Laboratory of the US EPA in Cincinnati. There were various phases for this analytical development. The first step involved purifying the commercial material or presscake to obtain a standard for quantitative determination. A combination of HPLC, TLC and mass spectrometric methods was used to determine purity after extraction and column cleanup. Phase two involved the extraction of the dye from the matrices involved. The third phase was the actual testing of Disperse Blue 79 in the waste activated sludge system and anaerobic digester. Recovery of the dye and any degradation products at each sampling point (e.g., secondary effluent, waste activated sludge) was the goal of this phase.
- OSTI ID:
- 7072140
- Report Number(s):
- CONF-8909234--
- Journal Information:
- Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA), Journal Name: Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA) Vol. 28:2; ISSN 0099-7293; ISSN ACWCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Biological wastewater treatment of azo dyes
Degradation of disperse blue 79 in anaerobic sediment-water systems
Related Subjects
400102* -- Chemical & Spectral Procedures
400105 -- Separation Procedures
54 ENVIRONMENTAL SCIENCES
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
ACTIVATED SLUDGE PROCESS
AZO COMPOUNDS
AZO DYES
BIODEGRADATION
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHROMATOGRAPHY
DECOMPOSITION
DYES
EXTRACTION
HYDROGEN COMPOUNDS
LIQUID COLUMN CHROMATOGRAPHY
LIQUID WASTES
MANAGEMENT
MASS SPECTROSCOPY
MEASURING METHODS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTROSCOPY
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER