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KMID : 1059520170610060339
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Journal of the Korean Chemical Society
2017 Volume.61 No. 6 p.339 ~ p.345
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Adsorption of Cd on Carbonaceous Adsorbent Developed from Automotive Waste Tire
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Kim Youn-Jung
Uh Eun-Jeong
Choi Jong-Ha
Hong Yong-Pyo
Kim Dae-Ik
Ryoo Keon-Sang
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Abstract
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Carbonaceous adsorbent (CA-WTP) was prepared by heat treatment at 400 oC for 2 h in N2 atmosphere using waste tire powder (WTP). WTP and CA-WTP were first characterized by thermo-gravimetric analysis (TGA), energy dispersive X-ray spectrometer (EDS), scanning electron microscopy (SEM), specific surface area analysis (BET) and FT-IR spectroscopy. Then, they were tested as adsorbents for removal of Cd in water. CA-WTP exhibited much higher specific surface area and total pore volume than WTP itself and showed higher adsorption capacity for Cd. Equilibrium data of adsorption were analyzed using Freundlich and Langmuir isotherm models. It was seen that both Freundlich and Langmuir isotherms have correlation coefficient R2 value larger than 0.95. The results of studies indicate that CA-WTP developed from WTP by heat treatment could be used as efficient adsorbent for the removal Cd from water.
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KEYWORD
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Waste tire, Adsorption, Adsorbent, Cd, Adsorption isotherm
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