Electron beam-induced grafting polymerization was employed to prepare Acrylic acid-grafted bacterial cellulose (BC-g-AAc). BC-g-AAc as an adsorbent was applied to remove heavy metals (e.g., As, Pb, and Cd). This study examined followings; morphological change of surface, adsorptive behavior of BC-g-AAc, and interpretation of adsorptive kinetics. Specific surface areas of BC and BC-g-AAc were 0.9527 m2 g-1 for BC and 0.2272 m2 g-1 for BC-g-AAc, respectively as measured by BET nitrogen adsorption, revealing the morphological change of the surface of BC-g-AAc. Batch adsorption test was performed to investigate adsorptive behavior of BC-g-AAc in aqueous solution. The amounts of Pb and Cd adsorbed on BC-g-AAc were 69 mg g-1 and 56 mg g-1, respectively. However, As was not adsorbed on BC-g-AAc due to its neutral nature. Both the Benaissa model and the Kurniawan model were applied in the study to interpret adsorptive kinetics. From the value of correction coefficient (R2), adsorptive kinetics of Pb and Cd were subjected to Kurniawan model referred to pseudo-second-order. Taken together, the results of this study show that BC-g-AAc has potential as a heavy metal (eg., Pb, Cd)-adsorbent made of an environmentally friendly material.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1 흡착제 제조를 위한 기본 개념
  2.2 시약 및 미생물 균주
  2.3 BC 생산
  2.4 Acrylic acid-grafted BC의 제조 및 비표면적 측정
  2.5 Batch 흡착실험
 3. 결과 및 고찰
  3.1 BC-g-AAc 흡착제의 제조 및 성분확인
  3.2 BC 및 BC-g-AAc 흡착제의 비표면적의 변화
  3.3 As, Cd 및 Pb 중금속의 등온흡착
  3.4 비소 (As), 납 (Pb) 및 카드뮴 (Cd) 수용액에서 BC-g-AAc흡착제의 속도론적 고찰
 4. 결 론
 감사의 글
 참고문헌

• 안영희(동아대학교 환경공학과) | Yeong-Hee Ahn (Department of Environmental Engineering, Dong-A University)
• 최용진(동의대학교 화학공학과) | Yong-Jin Choi (Department of Chemical Engineering, Dong-eui University) Corresponding author