We investigated usefulness of chicken feather as bioadsorbent for removal of hexavalent chromium[Cr(Ⅵ)] and oil from aqueous solution. Chicken feather was chemically treated with DTPA, EDTA, NaOH and SDS, respectively. Among them, EDTA was the most effective in adsorbing Cr(Ⅵ). Cr(Ⅵ) uptake by chicken feather was increased with decreasing pH; the highest Cr(Ⅵ) uptake was observed at pH 2.0. By increasing Cr(Ⅵ) concentration, Cr(Ⅵ) uptake was increased, and maximum Cr(Ⅵ) uptake was 0.34 mmol/g. Cr(Ⅵ) adsorption by chicken feather was well described by Freundlich isotherm than Langmuir isotherm and Freundlich constant(1/n) was 0.476. As the concentration of chicken feather was increased, Cr (Ⅵ) removal efficiency was increased but Cr(Ⅵ) uptake was decreased. Most of Cr(Ⅵ) was adsorbed at early reaction stage(1 h) and adsorption equilibrium was established at 5 h. On the other hand, chicken feather adsorbed effectively oils including bunker-A and bunker-C. In conclusion, our results suggest that chicken feather waste could be used to remove heavy metal and oil; it is a potential candidate for biosorption material.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험재료
  2.2. 우모의 전처리
  2.3. Cr(Ⅵ) 흡착실험
  2.4. 유류 흡착실험
  2.5. 분석방법
 3. 결과 및 고찰
  3.1. 우모 전처리 및 pH에 따른 Cr(Ⅵ) 흡착능
  3.2. Cr(Ⅵ)의 흡착평형 해석
  3.3. 우모 첨가량 및 반응시간에 따른 Cr(Ⅵ) 흡착능
  3.4. 우모의 유류 흡착능
 4. 결 론
 참 고 문 헌

• 손홍주(부산대학교 생명환경화학과) | Hong-Joo Son (Department of Life Science and Environmental Biochemistry, Pusan National University) Corresponding author
• 박근태(부산대학교 산학협력단) | Geun-Tae Park (Research & University-Industry Cooperation, Pusan National University)
• 정성윤(대구가톨릭대학교 의생명과학과) | Seong-Yun Jeong (Department of Medical Life Science, Catholic University of Daegu)
• 박성보(부산대학교 생명환경화학과) | Sung-Bo Park (Department of Life Science and Environmental Biochemistry, Pusan National University)
• 이나리(부산대학교 생명환경화학과) | Na-Ri Lee (Department of Life Science and Environmental Biochemistry, Pusan National University)
• 정진하(부산대학교 생명환경화학과) | Jin-Ha Jeong (Department of Life Science and Environmental Biochemistry, Pusan National University)