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
WHAT IS THE CENTRAL PROPOSITION OF THE ORTHODOX KEYNESNIANS?

1. Should each person behave in the workplace the way they do at home? Or should each person have a separate set of ethics for each part of their life? 2. What if you are the bo

what is the impact of interest rate in consumption

What is the formula for consumer price index?

why is credit multiplier lower than money multiplier

Determine the present worth of a geometric gradient series with a cash flow of $50,000 in year 1 and increases of 6% each year through year 8. The interest rate is 10% per year.

TRADE IN SERVICES: India had objected to  the  inclusion of  trade in services  in  the agreement for  the UR  negotiations. The  Indian negotiations continued to raise object

state and explain two factors that cause the shifts in the balance of payments curve.

Q. Overnight interest rates targets and money supply? There are many ways to explain the significant connection between overnight interest rate target and money supply. We will

Suppose that between January 2011 and January 2012 the total number of people employed and the unemployment rate both fell. Briefly explain how this is possible. [2 marks]