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Journals / Black Sea Journal of Engineering and Science / 2026 / Cilt: 8 Sayı: 5

Exploring the Adsorption Performance of Eggshell Powder for Methylene Blue Removal from Wastewater

Emine Kayhan(USAK UNIVERSITY)0000-0002-3015-4188
Pages
1548–1555
Publication Date
2025-09-15
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Overall, the findings demonstrate that ES is an effective, eco-friendly adsorbent for MB removal, especially under basic pH, making it a promising candidate for wastewater treatment applications.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This study investigates the potential of eggshell (ES) powder as a sustainable and low-cost adsorbent for the removal of methylene blue (MB) dye from aqueous solutions.
📊
Key Findings & Data:Batch adsorption experiments were conducted using an initial MB concentration of 20 mg/L and ES powder with an average particle size of 5.49 µm (D₀.₅).
💡
Conclusion & Impact:Overall, the findings demonstrate that ES is an effective, eco-friendly adsorbent for MB removal, especially under basic pH, making it a promising candidate for wastewater treatment applications.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Methylene blue · Eggshell powder · Adsorption

Abstract

This study investigates the potential of eggshell (ES) powder as a sustainable and low-cost adsorbent for the removal of methylene blue (MB) dye from aqueous solutions. Batch adsorption experiments were conducted using an initial MB concentration of 20 mg/L and ES powder with an average particle size of 5.49 µm (D₀.₅). The effects of pH (2, 7, and 12), contact time (0–45 minutes), and adsorbent dosage (0–40 g/L) on MB removal efficiency were evaluated. The ES powder was prepared through drying, grinding, and ball milling, and characterized using SEM, FTIR, and particle size analysis. UV–Vis spectrophotometric measurements indicated that MB adsorption was highly pH-dependent, with removal efficiency of 98% observed at pH 12, 10 g/L ES dosage, and 5 minutes contact time. The adsorption efficiency increased rapidly in the first 5 minutes, followed by a gradual plateau as equilibrium was approached. FTIR spectra confirmed interactions between MB and ES, particularly under alkaline conditions, supporting the role of electrostatic attraction. Compared to previous ES-based adsorbents, this study demonstrates improved removal efficiency at lower contact times without thermal or chemical pre-treatment, highlighting its novelty. Overall, the findings demonstrate that ES is an effective, eco-friendly adsorbent for MB removal, especially under basic pH, making it a promising candidate for wastewater treatment applications.

Özet

This study investigates the potential of eggshell (ES) powder as a sustainable and low-cost adsorbent for the removal of methylene blue (MB) dye from aqueous solutions. Batch adsorption experiments were conducted using an initial MB concentration of 20 mg/L and ES powder with an average particle size of 5.49 µm (D₀.₅). The effects of pH (2, 7, and 12), contact time (0–45 minutes), and adsorbent dosage (0–40 g/L) on MB removal efficiency were evaluated. The ES powder was prepared through drying, grinding, and ball milling, and characterized using SEM, FTIR, and particle size analysis. UV–Vis spectrophotometric measurements indicated that MB adsorption was highly pH-dependent, with removal efficiency of 98% observed at pH 12, 10 g/L ES dosage, and 5 minutes contact time. The adsorption efficiency increased rapidly in the first 5 minutes, followed by a gradual plateau as equilibrium was approached. FTIR spectra confirmed interactions between MB and ES, particularly under alkaline conditions, supporting the role of electrostatic attraction. Compared to previous ES-based adsorbents, this study demonstrates improved removal efficiency at lower contact times without thermal or chemical pre-treatment, highlighting its novelty. Overall, the findings demonstrate that ES is an effective, eco-friendly adsorbent for MB removal, especially under basic pH, making it a promising candidate for wastewater treatment applications.

🔖

Cite This Article

Kayhan, E. (2025). Exploring the Adsorption Performance of Eggshell Powder for Methylene Blue Removal from Wastewater. Black Sea Journal of Engineering and Science, Cilt: 8 Sayı: 5, 1548–1555. https://doi.org/10.34248/bsengineering.1746982

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