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카드뮴 내성균 ( Pseudomonas putida ) 의 균체내 카드뮴 축적특성 및 균체내 축적된 카드뮴의 회수
조주식,임영성,허종수 ( Ju Sik Cho,Yeong Sung Lim,Jong Soo Heo ) 한국물환경학회 1997 한국물환경학회지 Vol.13 No.1
Cadmium-tolerant bacteria, Pseudomonas putida which possessed the ability to accumulate cadmium, was isolated from mine wastewater polluted with various heavy metals. The characteristics of cadmium accumulation in the cells, recovery of the cadmium from the cells accumulating cadmium, were investigated. Removal rate of cadmium from the solution containing 100㎎/ℓof cadmium by Pseudomonas putida was more than 87% at 48 hours after inoculation of the cells. A large number of the electron-dense granules were found mainly on the cell wall and cell membrane fractions, when determined by transmission electron microscope. Energy dispersive X-ray spectroscopy revealed that the electron-dense granules were cadmium complex with the substances binding cadmium. The cadmium accumulated into the cells was not desorbed by distilled water, but more than 80% of the cadmium accumulated was desorbed by 0.1M-EDTA solution. The residues of the cells after combustion at 550% amounted to about 21% of the dry weight of the cells. EDS analysis showed that the residues were comparatively pure cadmium compound containing more than 81% of cadmium.
Adsorption capacities of nitrogen and phosphorus by biochars from water plants
Jong Hak Han(한종학),Dong-Cheol Seo(서동철),Se-Won Kang(강세원),Ik-Won Choi(최익원),Byung-Jin Lim(임병진),Jong-Hwan Park(박종환),Kap-Soon Kim(김갑순),Jun-Bae Lee(이준배),Jong-Soo Heo(허종수),Ju-Sik Cho(조주식) 한국토양비료학회 2011 한국토양비료학회 학술발표회 초록집 Vol.2011 No.10