Write the mass balance equation, Macroeconomics

Environmental engineers and scientists are becoming concerned about pharmaceuticals in the environment. An antibiotic is discharged into a small lake at an influent concentration of 0.05 mg/L. The lake has a surface area of 1.5 acres and a mean depth of 6 feet. The flow into the river is 100 cubic feet per second (cfs). The antibiotic is degraded naturally in the lake with a first-order rate constant of 0.003 s-1.

A. What kind of hydrodynamic model should you use for a small lake?

B. Write the mass balance equation in words.

C. Write the mass balance equation for the antibiotic in symbols at steady state. Define your symbols.

D. What is the antibiotic concentration in a river draining the lake at steady state?

 

Posted Date: 3/19/2013 4:03:42 AM | Location : United States







Related Discussions:- Write the mass balance equation, Assignment Help, Ask Question on Write the mass balance equation, Get Answer, Expert's Help, Write the mass balance equation Discussions

Write discussion on Write the mass balance equation
Your posts are moderated
Related Questions
Analyze the ways in which managers could use the Federal Register to determine the single most significant challenge associated with its use, and how managers could address that ch

The mundelfleming model takes the world interst rate r* as anexogenous variable.Let,consider what happen when this variable changes.a,what maight cause the world interest rate tori

Automobiles arrive at the Elkhart exit of the Indiana Toll Road at the rate of two per minute. The distribution of arrivals approximates a Poisson distribution. A) What is the prob

For which of the following medical goods or services is the income elasticity of demand largest? a. emergency services after a car accident b. measles shots c. physical ex

factors that causes the shifts in balance of payments

Suppose that an investment tax credit is stated to be temporary in nature, and the credit will be 10% on newly acquired capital (investment) equipment and will last just one year o

What is the price elasticity of supply? Price elasticity of supply: The price elasticity of supply is a measure of the receptiveness of the quantity of a good supplied to pr

Assume the United States has the following consumption information:                                     GDP = Income              Consumption

Please explain each of the following terms and explain how each is used in the standard model. 1. Iso value line's 2. Production possibilities frontier 3. Indifference curve. You w

Suppose price elasticity of demand for HP laptops is -2.3. If the price of an HP laptop is $1,000, what should the new price be to have an increase of 10% in quantity demanded for