Abstract Disperse Orange 1, colour index 11080, is an azo dye. Collectively, dyes are a common cause of textile-related allergic contact dermatitis (ACD). A 2006 European Union (EU) directive restricts the sale any articles or dyed items that have direct and prolonged with skin oral cavity contain more than 30-ppm dyes. These include wide range such clothing, bedding, furniture, toys yarn. Desp...

Abstract For conjugating sulfa drug moieties with Schiff’s bases scaffold in the same build through an azo linker to take advantage of bioactive feature both motifs, we designed and synthesized a series disperse dyes. The target dyes, methyl 2-( E -2-hydroxy-5-(( )-(4-sulfa-derivative) diazenyl)benzylidene) hydrazine-1-carbodithioates 4a – e have been via acidic reaction dyes 3a hydrazine carbo...

Work summarized in this final report covering three years of research includes: 1) A method for real-time monitoring of disperse dye exhaustion on polyester and acetate; 2) A method for realtime monitoring of both reactive dye exhaustion and hydrolysis; 3) A comparison of a newly developed method for real-time monitoring of indigo with the conventional titrametric method; 4) Models of direct dy...

In this study, the cationic lignin-based flocculant was prepared and used with polyferric chloride (PFC) to treat disperse and reactive dyes wastewater. The effects of dosage, initial pH, hardness and ionic strength on the interactions and floc properties were studied. Results showed that hydroxyl and quaternary ammonium groups of LBF could combine with -NHand sulfo groups of dyes. Large flocs ...

After the dyeing process, part of the dyes used to color textile materials are not fixed into the substrate and are discharged into wastewater as residual dyes. In this study, a heterogeneous photocatalytic process combined with microfiltration has been investigated for the removal of C.I. Disperse Red 73 from synthetic textile effluents. The titanium dioxide (TiO2) Aeroxide P25 was selected as...

ABSTMCT: Reduction in the requirements for water, energy, and chemicals have been achieved by changes in carpet beck dyeing procedures. Instead of discharging the dyebath following each dye cycle, in the new procedure the spent bath is analyzed, reconstituted to the desired concentration of dyes and auxiliary chemicals, and reused. Bench scale dyeings were conducted initially to define operat...