水中に溶存する微量有機物の除去に関する研究 (第3報) : 表面改質した活性炭による直鎖飽和アルコールの吸着特性

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The adsorption equilibrium of water soluble saturated linear alcohols on the surface modified and unmodified active carbons in aqueous solutions was examined. An active carbon, Pittsburg Active Carbon (Calgon Co.), was used as an adsorbent, and this was treated with various oxidants such as nitric acid, hydrochloric-hydrofluoric acid, air, oxygen, ozone. Saturated linear alcohols used in this experiment were from ethanol to 1-octanol. The adsorption isotherms were made in accordance with Freundlich equation, and Traubes law was applied in this experiment. The adsorption capacity of saturated linear alcohols on the active carbon was less than that of fatty acids of C2-C4, but saturated linear alcohols of C5-C8 showed a reverse result in dilute solutions. The adsorption capacity of 1-butanol on the active carbon modified by various oxidants decreases in the following order : HCl-HF>ozone>O2>unmodified>HNO3>air.
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