열처리 석회석을 이용한 수중 Cu2+, Cd2+의 제거 (Removal of Cu2+, Cd2+ from Water using Thermally Treated Lime Stone)

서지정보

· 발행기관 : 한국수처리학회
· 수록지 정보 : 한국수처리학회지 / 24권 / 3호 / 85 ~ 94페이지
· 저자명 : 강구, 구본운, 김영기, 박성직

초록

This study examined the removal of Cu2+ and Cd2+ from water using thermally treated lime stone (TT-LS). Adsorption experiments have been conducted in batch conditions using line stone thermally treated at different temperatures (100~900 ℃). Cation exchange capacity and adsorption capacity of TT-LS slightly increased with increasing thermal treatment temperature, and lime stone thermally treated at 900 ℃ (900TT-LS) was shown to be most effective for the removal of Cu2+ and Cd2+. 900TT-LS with highest removal efficiencies was studied in further experiments. Kinetic adsorption data obey both pseudo first and pseudo second order model. The equilibrium adsorption data for Cu2+ were fitted well to Freundlich isotherm and that for Cd2+ both Freundlich and Langmuir isotherm. The maximum adsorption capacity of 900TT-LS for Cu2+ and Cd2+ were 109.99 mg/g and 37.19 mg/g, respectively. The influence of initial solution pH on both Cu2+ and Cd2+ adsorption was insignificant. It was concluded that the 900TT-LS could be used as a cheap and effective adsorbent for the Cu2+ and Cd2+ removal.

영어초록

This study examined the removal of Cu2+ and Cd2+ from water using thermally treated lime stone (TT-LS). Adsorption experiments have been conducted in batch conditions using line stone thermally treated at different temperatures (100~900 ℃). Cation exchange capacity and adsorption capacity of TT-LS slightly increased with increasing thermal treatment temperature, and lime stone thermally treated at 900 ℃ (900TT-LS) was shown to be most effective for the removal of Cu2+ and Cd2+. 900TT-LS with highest removal efficiencies was studied in further experiments. Kinetic adsorption data obey both pseudo first and pseudo second order model. The equilibrium adsorption data for Cu2+ were fitted well to Freundlich isotherm and that for Cd2+ both Freundlich and Langmuir isotherm. The maximum adsorption capacity of 900TT-LS for Cu2+ and Cd2+ were 109.99 mg/g and 37.19 mg/g, respectively. The influence of initial solution pH on both Cu2+ and Cd2+ adsorption was insignificant. It was concluded that the 900TT-LS could be used as a cheap and effective adsorbent for the Cu2+ and Cd2+ removal.

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