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Inhibitory Effect of the Selected Heavy Metals on the Growth of the Phosphorus Accumulating Microorganism, Acinetobacter sp.
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Inhibitory Effect of the Selected Heavy Metals on the Growth of the Phosphorus Accumulating Microorganism, Acinetobacter sp.
Chung, Keun-Yook; Han, Seok-Soon; Kim, Hong-Ki; Choi, Guak-Soon; Kim, In-Su; Lee, Sang-Sung; Woo, Sun-Hee; Lee, Kyung-Ho; Kim, Jai-Joung;
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This study was initiated to evaluate the inhibitory effect of selected heavy metals on the growth of Acinetobacter sp. Down as one of the phosphorus accumulating microorganisms (PAO) involved in the enhanced biological phosphorus removal (EBPR) process of the wastewater treatment plant. Acinetobacter sp. was initially selected as a starting model microorganism and was grown under aerobic condition for this experiment. The heavy metals selected and investigated in this study were cadmium (Cd), copper (Cu), mercury (Hg), nickel (Ni), and zinc (Zn). Median and threshold inhibitory concentrations for Cd, Cu, Hg, Ni, and Zn were 2.95 and 1.45, 4.92 and 2.53, 0.03 and 0.02, 1.12 and 0.43, 14.84 and 5.46 mg , respectively. We demonstrated that most of heavy metals tested in the experiment inhibited the growth of Acinetobacter sp. in the range of predetermined concentrations. Based on the data obtained from the experiment, Hg was the most sensitive to Acinetobacter sp., then Ni, Cd, Cu, and Zn in order.
Inhibition;growth;heavy metals;Acinetobacter sp.;PAO;
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다양한 중금속이 인 축적 미생물 (Pseudomonas sp.)의 생장과 인 제거에 대한 효과,김희정;유리비;한석순;우선희;이문순;백기태;정근욱;

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