Adsorption of Amaranth Dye from Aqueous Solution Using Environmental Friendly Biosorbents-eggshell Powder

Area of Science:

• Environmental Chemistry
• Materials Science

Background:

• Industrial dyes and pigments pose significant environmental and health risks.
• Wastewater treatment is crucial to mitigate the hazards of dye pollutants.

Purpose of the Study:

• To investigate the efficacy of egg shell powder as a cost-effective and eco-friendly adsorbent for amaranth dye removal.
• To evaluate the performance of a novel biosorbent for industrial wastewater treatment.

Main Methods:

• Adsorption experiments were conducted using egg shell powder to remove amaranth dye.
• Key parameters including contact time, pH, adsorbent dosage, and temperature were optimized.
• Adsorption isotherms (Langmuir, Freundlich, Temkin) were employed to analyze the adsorption process.

Main Results:

• Optimal amaranth dye removal was achieved at pH 4 (98.32%), 60°C (96.30%), and with 6 g of egg shell powder (97.61%).
• The adsorbent reached saturation at 300 ppm, beyond which dye desorption occurred.
• The Freundlich isotherm model best described the amaranth dye adsorption process.

Conclusions:

• Egg shell powder demonstrates significant potential as an environmentally friendly biosorbent.
• This sustainable material offers a viable solution for the effective removal of amaranth dye from contaminated water sources.