| Abstract |
| The aim of this study was to investigate the Pb and Cd removal using various temperature calcined eggshell. The experiment was optimized calcined temperature, amount of calcined eggshell, concentration of Pb and Cd. As a pretrement process for the preparation of reused material from waste eggshell, calcination was performed in the furnace 200℃, 400℃, 600℃, 800℃ and 1000℃ for 2h after crushing dried waste eggshell. After calcination, the major inorganic composition was identified as Ca (lime, 99.63% at 800℃) and K, P, Si were identified as minor components and more porosity compared to the other calcined eggshell. Therefore, the optimum temperature of calcination for eggshell was at 800℃. The Pb and Cd less than 5 mg/L concentration was available completely removed by the around 4 times and 6 times amount using calcined eggshell at 800℃, respectively. From the application of calcined eggshell in the treatment of real electroplating wastewater, the calcined eggshell showed a promising removal capacity of heavy metal ions as well as had good neutralization capacity in the treatment of strong acidic wastewater. |
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| Key Words |
| Absorption, Bio-adsorbent, Calcined eggshells, Heavy metal removal |
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