In this study, adsorption of polychlorinated biphenyls(PCBs) in transformer oil on powder activated carbon (PAC) and synthetic zeolite was evaluated. Adsorption characteristics of PCBs on the PAC and zeolite has been investigated in a batch system with respect to adsorbents amount and contact time. BET results showed 908 m2/g for PAC and 483 m2/g for zeolite. The adsorption capacity of PCBs increased with an increasing input amount of absorbent. The adsorption experimental results showed that PAC removed 90% of input PCBs in transformer oil while zeolite removed only 64%. Adsorption of PCBs to PAC and zeolite fit the Freundlich model well. The Freundlich parameter, Kf, for PAC and zeolite was 193.1 and 43.0 respectively, indicating that PAC is effect adsorbent for PCBs adsorption in transformer oil.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 재료 및 시약
  2.2. 연구방법
 3. 결과 및 고찰
  3.1. 흡착제의 표면 특성
  3.2. PCBs의 흡착
  3.3. 흡착평형
 4. 결 론
 참 고 문 헌

• 추헌직(계명대학교 환경과학과) | Heon-Jik Chu (Department of Environmental Science and Engineering, Keimyung University)
• 최성우(계명대학교 환경과학과) | Sung-Woo Choi (Department of Environmental Science and Engineering, Keimyung University) Corresponding author