Study of the Leacril Dyeing Process by a Cationic Dye from an Emulsion System

Thermodynamic behaviour and the effect of temperature on the removal of dyes from aqueous solution using modified diatomite: A kinetic study

“…The adsorbent particles were thoroughly mixed with 1.7 dm 3 of the dye solution in the beaker at varying temperatures (22,35,50 and 60 • C) using a hot plate (Davidson and Hardy Ltd.). The agitation speed in the beaker was fixed at 300 rpm, pH levels were maintained at 2 (for RB and RY) and 11 (for MB), initial dye concentration 100 mg/dm 3 , particle size <106 µm and the mass of adsorbent was 1 g. These optimum experimental conditions have been chosen by performing various experimental conditions such as effect of initial concentration, effect of particle sizes and effect of agitation speed.…”

“…Diffusion is affected by temperature in a kinetic adsorption process and it follows the Arrhenius equation. It is also possible to determine the activation energy of the diffusion process, E [22], which could be calculated using the Arrhenius equation (Eq. (7)).…”

Effect of Tannic Acid on the Dyeing Process of Nylon 6 Fabric With Cationic Dye

“…4. These may conclude that the adsorption process in both systems is a diffusion controlled [13]. Figure 3 shows the effect of pH on the colour strength of both dye solution and dye emulsion phase.…”

“…Generally, the gradually increase in dyeability at higher temperature for both treated and untreated fabrics using the dye emulsion system was more favour than the fast increment of the treated fabrics with dye solution. These results may be dye to the higher activation energy for the diffusion process in the emulsion system and hence enhanced dye diffusion than in the dye solution [13].…”

“…Other studies reported that the application of tannic acid/ Rhodamine B cationic dye emulsion system can improve the dye adsorption on leacril fabric [13] .…”