폐 커피가루를 이용한 Methylene Blue의 흡착특성에 관한 연구
A Study on Adsorption Characteristics of Methylene Blue on Waste Coffee Powder
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Adsorption amounts of methylene blue on waste coffee powder increased withincreasing pH and temperature of the solution. The maximum adsorption amounts of methyleneblue on waste coffee powder was 0.67 mol/kg (298K, pH 10). Adsorption isotherms of methyleneblue on wasted coffee powder was well fitted by the Langmuir equation. The estimated values forthe free energy of adsorption (Δ ) were –103.96, -116.36 and –120.93kJ/mol at 288, 298 and308K, which indicated that a spontaneous process had occurred.
Abstract
Adsorption amounts of methylene blue on waste coffee powder increased withincreasing pH and temperature of the solution. The maximum adsorption amounts of methyleneblue on waste coffee powder was 0.67 mol/kg (298K, pH 10). Adsorption isotherms of methyleneblue on wasted coffee powder was well fitted by the Langmuir equation. The estimated values forthe free energy of adsorption (Δ ) were –103.96, -116.36 and –120.93kJ/mol at 288, 298 and308K, which indicated that a spontaneous process had occurred.
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