다양한 중금속이 인 축적 미생물 ( Pseudomonas sp.)의 생장과 인 제거에 대한 효과

• Published in: Hanguk hwangyeong nonghak hoeji Vol. 29; no. 2; pp. 189 - 196
• Main Authors: 김희정, Hee Jung Kim, 유리비, Ri Bi You, 한석순, Seok Soon Han, 우선희, Sun Hee Woo, 이문순, Moon Soon Lee, 백기태, Ki Tae Baek, 정근욱, Keun Yook Chung
• Format: Journal Article
• Language: Korean
• Published: 한국환경농학회 30.06.2010
• Subjects: Growth; Heavy Metals; IC50; PAO`s; Phosphorus Accumulating MicroOrganism; Phosphorus Removal Efficiency; Pseudomonas sp; 농학; Pseudomonas sp; IC_{50}; Phosphorus Accumulating MicroOrganism(PAO's); Heavy Metals; Growth; Phosphorus Removal Efficiency
• ISSN: 1225-3537; 2233-4173

The removal of phosphorus (P) in the wastewater is essential for the prevention of eutrophication in the river and stream. This study was initiated to evaluate the effect of the various heavy metals on the growth and P removal capacity of Pseudomonas sp., which was well known as phosphorus accumulating microorganism(PAO`s) in the EBPR(Enhanced Biological Phosphorus Removal) process. The five heavy metals used in the study were Cu, As, Zn, Ni, and Cd. The growth rate of Pseudomonas sp. was the greatest at 25℃, but the removal efficiency of P was the highest at 30℃. The IC50 (median Inhibition Concentration) values of Pseudomonas sp. for the Cu, As, Zn, Ni, and Cd were 2.35, 11.04, 1.80, 4.92, and 0.24 mg/L, respectively. Therefore, it appears that the sensitivity of the heavy metals to Pseudomonas sp. was in the following order: Cd> Zn> Cu> Ni> AS. Also, the P removal efficiencies by Pseudomonas sp. were correspondingly decreased as the concentrations of heavy metals were increased.