Effects of physical and chemical factors on the growth of Tetrahymena sp. isolate
1989
Kim, J.J. | Lee, H.H. (Konkuk Univ., Seoul (Korea R.). Dept. of Biology) | Ryu, J.K. (National Institute of Environmental Research, Seoul (Korea R.). Division of Wastweater Engineering)
A protozoa, Tetrahymena sp. was isolated from domestic wastewater and identified by morphological characteristics. It was 50 to 70 micro m in length, ovoidal shape, and divided by binary fission. When Escherichia coli was fed as a food microorganism, the optimal conditions for growth were 30 to 35deg C, pH 7 to 9 and 0.05 % NaCl. The growth was inhibited by heavy metal ions; 0.3mg of Cd++/l and 0.1mg of Cu++/l. However, it was not inhibited up to 0.7 mg of Zn++/l
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