We studied the removal efficiency of five heavy metal ions (lead, cadmium, chromium, copper, and manganese) ions by three species of Korean seaweeds (Hizikia fusiformis, Laminaria and Undaria pinnatitida). Removal efficiencies of lead, cadmium, chromium and copper ions by these seaweeds were in the range of 80 to 96% as determined by using an Atomic Absorption Spectrophotometer. For pH variation from 2 to 8 at 21℃ and with agitation at 120 rpm for 120 min, the heavy metal adsorption was the lowest at pH 2 for all the five metal ions. This low level of adsorption at pH 2 was probably due to an unfavorable competition of heavy metal ions with hydrogen ions for their adsorption to seaweeds. At pHs between 3 to 8 the amount of adsorbed ions increased for lead, cadmium, and manganese ions. The amount of adsorbed lead ion increased rapidly for the first 10 min, and reached a near maximum value after 60 min. Our results indicate that pH is an important process variable when seaweeds are used as adsorbent.
키워드
heavy metal ionsmarine algaepH
저자
Chang-Ho PARK [ Dept. of Chemical Engineering, Kyung Hee University. ]
Seung-Hoon LEE [ Dept. of Chemical Engineering, Kyung Hee University. ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동