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
Are there any current subsidy or welfare issues that are being discussed or addressed in parliament or in municipalities

Aggregate Supply and Demand 1. The equation for expenditure GDP is 2. Sketch a fully labeled aggregate supply and demand diagram for an economy that is in full employment equ

What impact will high and variable rates of inflation have on the economy? How will they influence the risk accompanying long-term contracts and related business decisions?

MEC vs MEI in detail

Explain whether, the following statements are TRUE, FALSE or UNCERTAIN. Briefly justify your answer. (i) The circular flow shows how real resources and financial payments flow

Illustrate the UK macroeconomic performance UK macroeconomic performance must be judged on economy's long-term ability to produce growth, create jobs and improve living standa

Fiscal policy is the program of government’s with respect to the amount and composition of (i) expenditure: the purchase of commodities and services, and spending in the form of su


1.    Which function of money is disrupted as a result of high inflation? Why? 2.    The central bank of Fiji has issued $1,000,000 in Fijian dollars. What is the size of m

what is the importance of the quantity theory of money