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
Using the equilibrium in the labor market and the model IS-LM explain the different behavior described by the classic and keynessian schools when there is an increase in public spe

market structurs

An attorney supplies 40 hours of work per week when her fee is $100 per hour but supplies 60 hours of work per week when her fee rises to $120 per hour. Using the midpoint formula,

This paper empirically analyses the effect of oil price shocks on key macroeconomic indicators in the United Kingdom.The aim of the paper is to establish a relationship between oil

This problem is based on the Ricardian Model. Assume that 2 countries, Stormlands and Reach, use White Walkers' labor to produce 2 goods, lumber and wheat.

Bruno's Lunch Counter is expanding and expects operating cash flows of $26,000 a year for 4 years as a result. This expansion requires $39,000 in new fixed assets. These assets wil

To determine of the wealth is earned by nations by economic activates all around the globe. Gross National Income comprises the total value of goods and services formed within a

What is the size of the labor force if the unemployment rate is 6%, the population is 300 million, and the number unemployed is 6 million

Foreign Institutional  Investment: Foreign  investment flows in the balance of payments  (BOP) comprise FDI flows and portfolio flows. The latter consists of resources mobilis