5.1. A spill of 5 kg of a soluble pesticide takes place in the first of two lakes in series. The pes- = VC, ticide is su

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5 1 A Spill Of 5 Kg Of A Soluble Pesticide Takes Place In The First Of Two Lakes In Series The Pes Vc Ticide Is Su 1 (87.56 KiB) Viewed 37 times

5.1. A spill of 5 kg of a soluble pesticide takes place in the first of two lakes in series. The pes- = VC, ticide is subject to volatilization that can be characterized by the first-order flux J where v, = a volatilization mass-transfer coefficient of 0.01 m d-!. Other parameters for the lakes are Lake 1 Lake 2 Surface area (mº) Mean depth (m) Outflow (m’ yr-)) 0.1 X 106 5 1 X 106 0.2 x 106 3 1 X 106 (a) Predict the concentration in both lakes as a function of time. Present your results as a plot. (b) The second lake is used as a water supply reservoir. Therefore it is critical to de- termine the time required for the second lake to reach its maximum concentration. Derive an analytical formulation to make this determination. Verify your results by comparing it to the plot from part (a).