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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Recovery of palladium from wastewater using a microbial fuel cell method

등록일
2012년 2월 24일 00시 19분 32초
접수번호
1495
발표코드
ENVR.P-1347 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
환경에너지
저자 및
공동저자
최찬수
대전대학교 응용화학과, Korea
The purpose of this study is to develop a cost-effective recovery system of palladium metal from wastewaters that contain Pd(II) ion. The A built-in electromotive force from a microbial fuel cell (MFC) was used while recovering the electric energy. After 40 hours reaction, Pd recovery rates as high as 99.58±0.01, 99.74±0.00, 99.16±0.02% were achieved when the initial concentrations of were 50 ppm, 100 ppm, and 200 ppm, respectively (the remaining concentrations were 0.21±0.01, 0.26±0.00, 1.68±0.05). The limiting current densities (LCJ) obtained from the voltage vs. current density (V-J) curves with different initial Pd(II) as [PdCl4]2- concentrations (Cbulk) were found to greatly increased greatly with increase of the initial concentration of Pd(II). However, the slope of the LCJ vs. Cbulk curve in the low concentration range was 3.7 times higher than that in of the high concentration range. This indicates that the anode reaction rate affects cathode reaction rate in the higher concentration range due to the relatively low donor reaction ratio. The maximum power of 7.03 W/m2 with a fill factor of 0.638 was achieved at 1000 ppm Pd(II) concentration. Using an initial concentration of 500 ppm, the fed-batch system yielded in discharge curves showing electric energy higher than about 39.2 Wh/Kg as a byproduct.

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