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
If the firm‘s lowest average cost is $52 and the corresponding average variable cost is $26, what does it pay a perfectly competitive firm to do if • The market price is $51?

Using production possibility frontiers, and indifference curves for Argentina and Brazil, illustrate and explain the movement of both countries to the free-trade equilibrium patter


Question 1 Consider an investor who has the von Neumann-Morgenstern utility index u(x ) = 3 + 4√ x An investment provides income according to two possible future scenari

Whenever real GDP declines, nominal GDP must also decline

define production function output effect?

Calculating interest rates on a yearly basis If maturity is different from one year, interest rate is generally recalculated to a corresponding one year rate. For instance con

Introducing the Foreign Trade Sector  Most economies in the real world are open economies. They engage in trade with other economies. Goods and services are exported and import

Suppose that a widget market is described by the following supply and demand equations. Supply: Q = 3 P Demand: Q =400 - P a. Solve for the equilibrium price and the

Derive that the complex amplitude of the double convex lens shown in the image below with focal length 1/f = (n-1 ) (1/R 1 - 1/R 2 ). Hint: we derived an plano convex lens in cla