In a laboratory study, decolourisation of real textile dyeing wastewater by modified solar photo-Fenton (Steel scrap/ H2O2 ) process under irradiation with sunlight was examined. Batch experiments were conducted to determine optimal operating conditions .The optimal doses of H2O2 and steel scrap were 15 mL/L and 1 g/L, respectively at pH 3.Colour removal of 89% was obtained under optimum condit...

We present experimental results on the in vitro and in vivo study of dye diffusion into human skin and hair follicles. We have studied some commercially available dyes for potential using in the laser selective thermolysis. The degree and the depth of hair follicle dyeing inside the skin were determined. For hairs in different stages the sebaceous gland was stated as a reservoir for a dye admin...

Multicycle reuse of disperse dyebaths on pilot scale jet equipment was investigated in dyeing of staple and filament 100% polyester knit fabrics. Long reuse runs of single shades produced good batch-to-batch shade uniformity. Multishade reuse runs were found feasible in the forward (light-mediumdark) direction for both fabric types even though dyes were not completely common in successive shade...

Abstract A chemical modification of cotton fabrics by 2-diethylaminoethyl chloride (DEAE-Cl) was achieved, and the resulted demonstrated salt-free dyeing properties with anionic dyes. Nucleophilic property hydroxyl groups in cellulose enhanced under alkaline conditions could react DEAE-Cl, a possessing both nucleophilic electrophilic sites. The monolayered DEAE-grafted further DEAE-Cl to form m...

BACKGROUND Positive patch test reactions to p-phenylenediamine (PPD) are common. PPD is used in oxidative hair dyes and is also present in dark henna temporary 'tattoos'. Cross-sensitization to other contact allergens may occur. Because subjects sensitized to PPD are at risk of clinically severe reactions upon hair dyeing, there is a need for 'current' prevalence data on PPD sensitization. OB...