Adsorption of phenol on activated carbon in a fixed bed was studied. The effects of fixed-bed length, superficial velocity (flow rate) and particle size of adsorbent on fixed-bed performance were investigated. Some characteristic parameters such as the breakthrough time (t0.05), saturation time (t0.95), length of mass transfer zone (LMTZ), adsorptive capacity (W), and adsorption rate constant (Ka) were derived from the breakthrough curves. Adsorbent particle sizes significantly affected the shape of the breakthrough curve. Larger particle sizes resulted in an earlier breakthrough, a longer LMTZ and a lower adsorption rate. Superficial velocity was a critical factor for the external mass transfer during fixed-bed adsorption process. The external mass transfer resistance was dominant as increasing superficial velocity.

Abstract
 1. 서 론
 2. 재료 및 방법
 3. 결과 및 고찰
  3.1. 농도의 영향
  3.2. 공탑속도의 영향
  3.3. 층높이의 영향
  3.4. 입자크기의 영향
  3.5. 물질전달 고찰
 4. 결 론
 참 고 문 헌

• 유해나(부경대학교 화학공학과) | Hae-na You (Department of Chemical Engineering, Pukyong National University)
• 이민규(부경대학교 화학공학과) | Min-Gyu Lee (Department of Chemical Engineering, Pukyong National University) Corresponding author
• 감상규(제주대학교 환경공학과) | Sang-Kyu Kam (Department of Environmental Engineering, Jeju National University)