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이학성(Hak Sung Lee),서정호(Jung Ho Suh),서근학(Kuen Hack Suh) 한국수산과학회 2000 한국수산과학회지 Vol.33 No.1
Silver-alginate (Ag-alginate) was prepared with Na-alginate extracted from marine brown algae. The antibacterial effect of Ag-alginate against Staphylococcus aureus and Escherichia coli was carried out by measuring optical density of liquid culture at 600㎚. The cell growth of S. aureus and E. coli was very active at pH 7, and was inhibited by adding Ag-alginate with more than 0.006 wt.% of silver content. The cell growth of S. aureus and E. coli was also influenced by the characteristics of counter ion of silver. The cell growth of S. aureus was less inhibitory than E. coli at the same concentration of Ag-alginate.
비틀대모자반 , Sargassum sagamianum 을 이용한 Pb 및 Cr 생체흡착 및 회수
서근학(Kuen hack Suh),안갑환(Kab Hwan Ahn),이학성(Hack Sung Lee),이회근(Hwae Geon Lee),조진구(Jin Koo Cho),홍용기(Yong Ki Hong) 한국수산과학회 1999 한국수산과학회지 Vol.32 No.4
Biosorption of Pb and Cr to Sargassum sagamianum was evaluated in the various conditions. An adsorption equilibrium was reached in about 15 min. for Pb and Cr. The uptake capacity was 224.5 ㎎ Pb/g biomass and 77.5 ㎎ Cr/g biomass, respectively. The adsorption parameters for Pb and Cr were determined according to Langmuir and Freundlich model. Biosorption of Pb and Cr was increased with an increase in pH value. Pb and Cr adsorbed by S. sagamianum could be recovered by desorption process with 0.1M HCl, 0.1M HNO₃ and 0.1M EDTA and the efficiency of Pb desorption was above 90%, whereas the efficiency of Cr desorption was below 51%.
해조류 , Sargassum thunbergii 를 이용한 중금속의 바이오 흡착제의 개발
서근학(Kuen Hack Suh),이학성(Hak Sung Lee),서정호(Jung Ho Suh) 한국수산과학회 2000 한국수산과학회지 Vol.33 No.1
Biosorptions of Cr and Pb were evaluated for 23 species of marine algae collected from a Korean coast. Among a variety of species for biosorbent potential, Sargassum species showed higher uptake capacity for Cr and Pb. An adsorption equilibrium was reached in about 1 hr for Cr and 30 min for Pb. The maximum uptake capacity was 136.0㎎ Cr/g biomass and 232.5㎎ Pb/g biomass, respectively. In Pb biosorption in the column packed with Sargassum thunbergii, 300 and 200 bed volumes at the concentration of 50㎎/L in feed solution were processed at the column residence time of 5 and 10 min before the column breakthrough point occurred. The elutions with 0.1 M HCl solution were more than 95%. The high efficiency of continous biosorption and elution (3 cycles) indicated that Sargassum thunbergii was an effective biosorbent for Pb recovery.