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    • ISSN: 2010-0221 (Print)
    • Abbreviated Title: Int. J. Chem. Eng. Appl.
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National Taipei University of Technology, Taiwan
 

HOME > Archive > 2025 > Volume 16 Number 2 (2025) >
IJCEA 2025 Vol.16(2): 93-96
doi: 10.18178/ijcea.2025.16.2.846

Removal of Fe(III) from Wastewater Using Calcium Oxide Prepared from Duck Eggshells

Wirada Artsamat1, Arnancha Intawaree1, Weerawat Clowutimon1,*, and Pornsawan Assawasaengrat2
1. Department of English Program, Samsenwittayalai School, Bangkok, Thailand
2. Department of Chemical Engineering, School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, Thailand
Email: ss48295@samsenwit.ac.th (W.A.); ss51109@samsenwit.ac.th (A.I.); t.weerawat@samsenwit.ac.th (W.C.); Pornsawan_as@kmitl.ac.th (P.A.)
*Corresponding author

Manuscript received July 14, 2025; accepted August 17, 2025; published September 23, 2025

Abstract—The adsorption of Fe3+ on CaO-standard and CaO prepared from duck eggshells was investigated. Duck eggshell CaO was prepared by calcination at 900 °C for 3 h and characterized using X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FT-IR), FT-Raman and Brunauer-Emmett-Teller (BET) techniques. The adsorption experiments were conducted in a batch process, with the parameters affecting adsorption capacity, i.e., contact time and initial concentration, were studied. Characterization methods revealed that duck eggshell CaO exhibited similar properties to CaO-standard but had a slightly lower surface area. Equilibrium adsorption was achieved within 60 min, and the adsorption behavior of Fe3+ on both CaO materials was better described by the Langmuir isotherm model. The maximum adsorption capacity of duck eggshell CaO was approximately 89% of that of CaO-standard, demonstrating its potential as an alternative and effective adsorbent for Fe3+ removal.

Keywords—adsorption, calcium oxide, duck eggshell, wastewater

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Cite: Wirada Artsamat, Arnancha Intawaree, Weerawat Clowutimon, and Pornsawan Assawasaengrat, "Removal of Fe(III) from Wastewater Using Calcium Oxide Prepared from Duck Eggshells," International Journal of Chemical Engineering and Applications vol. 16, no. 2, pp. 93-96, 2025.

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