| Title |
Adsorption Characteristics of Heavy Metals in Wastewater on Bone Charcoal |
| Authors |
정팔진(Paul Gene Chung),곽동희(Dong Heul Kwak),이재욱(Jae Wook Lee) |
| Abstract |
The study was conducted to evaluate the adsorption equilibrium of heavy metals on bone charcoal made of livestock bone which was sintered at 550-600℃. Analysis of bone charcoal by XRD and FT-IR showed that crystal structure was similar to that of synthetic hydroxyapatite. Adsorprption equilibrium capacity of single component (Pb, Cd, and Zn) on bone charcoal could be expressed as Langmuir, Freundlich, and Sips equations. Sips isotherm was best among the three isotherms. The values predicted by IAST (ideal adsorbed solution theory) showed good relationship to the experimental data in multicomponent adsorption equilibrium. Adsorption affinity was in order of Pb. Cd, and Zn. The order was same in case of activated carbon or synthetic hydroxyapatite. Through the study results, it would be expected that bone charcoal made of livestock could be used in field of wastewater treatment plants as adsorbent to remove heavy metal. |