| Issue |
E3S Web Conf.
Volume 629, 2025
2025 15th International Conference on Future Environment and Energy (ICFEE 2025)
|
|
|---|---|---|
| Article Number | 04001 | |
| Number of page(s) | 8 | |
| Section | Advanced Materials for Environmental Remediation | |
| DOI | https://doi.org/10.1051/e3sconf/202562904001 | |
| Published online | 05 June 2025 | |
Adsorption of methylene blue using calcium oxide from chicken eggshell
1 Samsenwittayalai School, Bangkok, 10400, Thailand
2 Department of Chemical Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
* Corresponding author: Pornsawan.as@kmitl.ac.th
The adsorption of methylene blue on calcium oxide synthesized from chicken eggshells was investigated as a method for wastewater purification. Calcium oxide adsorbent was prepared by calcining ground eggshells in a furnace at 900°C for 3 hours, resulting in a material with approximately 97% purity. Adsorption experiments were conducted in batch mode, using a 0.25g: 50 ml ratio of adsorbent to solution and maintaining a temperature of 35°C. The contact time and initial methylene blue concentration were varied between 0-480 minutes and 10-200 mg/L, respectively. Equilibrium was reached within 240 minutes, the adsorption isotherm can be modelled by Langmuir model with a maximum specific amount adsorbed of 27.03 mg/g.
© The Authors, published by EDP Sciences, 2025
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