Removal of Disperse Blue 56 from synthetic textile effluent using ionic flocculation.

Area of Science:

• Environmental Science
• Chemical Engineering
• Materials Science

Background:

• Textile industry generates significant industrial effluent laden with diverse pollutants, notably dyes.
• Disperse dyes, common in textile dyeing, pose environmental challenges due to their persistence and potential toxicity.

Purpose of the Study:

• To investigate the removal of Disperse Blue 56 dye from synthetic textile effluent.
• To evaluate the efficiency of ionic flocculation using surfactant flocs derived from animal/vegetable fat.
• To analyze the process kinetics, adsorption mechanism, and equilibrium of dye removal.

Main Methods:

• Ionic flocculation employing surfactant flocs from animal/vegetable fat.
• System assessment at varying surfactant concentrations and temperatures.
• Evaluation of process kinetics (Elovich, pseudo-first order, pseudo-second order models).
• Analysis of adsorption mechanism (diffusivity) and equilibrium (Langmuir isotherm).

Main Results:

• The Elovich model best described the process kinetics, suggesting chemical adsorption.
• Outer layer diffusion controlled the dye transport to the surfactant floc.
• The Langmuir isotherm accurately represented equilibrium data, indicating favorable adsorption.
• A dye removal efficiency of 87% was achieved within 360 minutes.

Conclusions:

• Ionic flocculation using biodegradable surfactant flocs is an effective method for treating textile effluent contaminated with disperse dyes.
• The process demonstrates favorable adsorption characteristics and efficient dye removal.
• This approach presents a viable and sustainable alternative for textile wastewater treatment.