A Continuous Flow Kinetic Model to Predict the Effects of Temperature on the Toxicity of Waste to Algae,

摘要

Many industries,such as pulp and paper mills, tanneries,and oil refineries,discharge toxic wastes at extremely high temperatures. The temperature of an oil refinery waste may range from 22C to 41C. These high temperatures could have a significant effect on the toxicity of a given waste. Therefore,it is necessary to develop relationships which will evaluate and predict the effects of increased temperature on the toxicity of various wastes. Equations have been developed utilizing continuous flow stirred tank reactor kinetics and enzyme inhibition kinetics to describe the effects of temperature on toxicity to microorganisms. These equations were tested by semicontinuous and continuous flow experiments with phenol and the algae Selenastrum capricornutum. Comparison of the competitive inhibition constants,KI,for S. capricornutum exposed to phenol at 20C, 24C,and 28C,indicates that phenol toxicity increases with an increase in temperature according to the Arrhenius function.