Title : The dynamics of dye interactions: Simultaneous (dual) removal of two textile dyes from industrial effluents using humic substances
Industrial effluents typically consist of one or more dyes from different families mixed together. Multiple components with several dyes are usually present, and this multiplicity can affect their behavior. Interactions between different dyes can occur, and their competitive or synergistic effects should not be ignored. In this context, we found it valuable to study the simultaneous removal of a mixture of two dyes, SBL and SRL, using humic substances. The study begins with a UV-visible spectral analysis, where a solution of the binary mixture was analyzed in a wavelength range from 400 to 800 nm. The aim was to verify if the mixture's composition does not influence the maximum absorption wavelength of each dye. For an initial concentration of 500 mg/L of both dyes, the removal efficiency is approximately 68.25% for SRL and 10.32% for SBL at 298 K in single-solute experiments. However, in the presence of SRL, the removal efficiency of SBL increases to 24%, while the retention rate of SRL decreases to 58%. This follows adsorption isotherms according to the extended Langmuir and extended Freundlich models, with R² values exceeding 0.9.
Audience Takeaway Notes:
- Explains the concept of dual adsorption and how it differs from single-component adsorption. This will help the audience grasp the complexity and importance of your research.
- Discuss the environmental significance of your work. Explain how the dual adsorption process can be used for wastewater treatment and pollution control, emphasizing the potential for a cleaner environment.
- The advantages of using biosorbents with humic substances over traditional chemical adsorbents. Explains how this approach can be more sustainable and cost-effective.
- Share insights into the optimization techniques and parameters used in your study to achieve effective dual adsorption. This could include factors like pH, temperature, and biosorbent dosage.