Calculate concentration of dnapl in the water as function

Assignment Help Civil Engineering
Reference no: EM13300180

If clean groundwater flows through an aquifer contaminated with a dense non- aqueous phase liquid (DNAPL), calculate the concentration of DNAPL in the water as a function of time if the DNAPL is dissolving into the water at a rate of k1 (mol/L/time, i.e., a zero-order process) and undergoes first-order degradation in the aqueous phase with a rate constant of k2 (time-1). Use a moving volume of water as the control volume (i.e., no water flow in or out).

Reference no: EM13300180

Questions Cloud

Determine the quick ratio for the end of the year : Determine the quick ratio for the end of the year and the discount rate used by the bank in computing the proceeds
What is the linear size of the image of the start on retina : When the eye looks at a star (a point of light), diffraction at the pupil spreads the image of the start on the retina into a small disk, What is the linear size of the image of the start on the retina
Explain the average rate for the reaction shown : which equation best describes the average rate for the reaction shown. A (aq) + B 9aq) -----> C (aq) + D (aq) A. rate= [C] [D] / [A] [B] B. rate= - deltat/-deltaB C. rate= -delta[C]/delta t D. rate= -delta[A]/delta t E. rate= [A] [B]/ [C] [D]
What size depostis must they make : They make deposits at the end of each 3-month period for 10 years and if interest is paid at 12% coumpunded quarterly what size depostis must they make?
Calculate concentration of dnapl in the water as function : If clean groundwater flows through an aquifer contaminated with a dense non- aqueous phase liquid (DNAPL), calculate the concentration of DNAPL in the water as a function of time if the DNAPL is dissolving into the water at a rate of k1
How can managers improve their perceptual skills : How can managers improve their perceptual skills?
Explain the concentrations of both no2 and n2o4 : Consider the reversible reaction: 2NO2(g) N2O4(g). If the concentrations of both NO2 and N2O4 are 0.016 mol L-1, what is the value of Qc
What must be the diameter of the aperture of the camera : Rumor has it that a photographic camera on a spy satellite can read the license plate of an automobile on the ground. what must be the diameter of the aperture of the camera
Would calcite be over or under-saturated in hot water heater : If log KSO, calcite (CaCO3(s)) = -8.61 at 50 oC, would calcite be over- or under- saturated in a hot water heater at 50 oC if the water was in equilibrium with calcite at 25 oC (log KSO = -8.30) when it entered the house

Reviews

Write a Review

 

Civil Engineering Questions & Answers

  Calculate the plume centerline temperature at 6 m height

A pump in a large industrial hall containing 30 liters gasoline breaks down, causing the gasoline to spill into a 3 m2 sump surrounding the pump. The liquid pool is ignited by sparks. Assume the combustion to be 70% effective and the heat loss due..

  Rate of diameter increasing of a balloon

A balloon is being inflated at the rate of 15m^3/min. At what rate is the diameter increasing after 5 min? Assume that the diameter is zero at time zero.

  Why the prediction are less than the observed result

why the prediction are less than the observed result of connection in tension experiment?

  How to calculate the ph of clean rain in the scenario

The pH of clean rain is influenced by the partial pressure of CO2 in the atmosphere. In addition, acid rain can be formed when sulfur dioxide (SO2) is discharged into the atmosphere. i) The atmospheric CO2 concentration could rise to 400 ppmv by 20..

  Compute the factor of safety by using an effective stress

A 2:1 natural slope is underlain by a 3-m thick (measured vertically) soil cover over bedrock. Compute the factor of safety by using an effective stress infinite slope analysis with c'=0 and o' (theres a line between that)= 35 degrees for the soil..

  Predict the temperature required in an isothermal plug flow

Using the method of Lee et al., predict the temperature required in an isothermal plug flow incinerator to reduce the xylene level in a waste gas from 100 ppm to 10 ppm. Assume a residence time of 0.7 sec.

  Determine ft and fn

for this purpose replace this force by its equivalent of two forces at At Ft parallel and Fn perpendicular to the beam. Determine Ft and Fn.

  What are the concentrations of h2po4- and hpo42-

The total phosphate concentration (TOTPO4) in a river is 3.2 mg/L as P. The pH of the river is 7.8. What are the concentrations of H2PO4- and HPO42-

  Determine the change in length of the aluminum alloy tube

An aluminum alloy tube of length 600mm and circular cross section with an inner diameter of 32mm and an external diameter of 36mm is subjected to an axial tensile force of 25kN. Find the change in length of the tube.

  Complete cycle of the motion

Find the time for one complete cycle of this motion if the spring constant is 21 N/m. (Assume that once the pendulum ball hits the spring there is no effect due to the vertical movement of the ball.)

  What is shear force exerted by oil on m long section of pipe

the flow profile is such that u=u(max)*(1-(r/R)^2) where u is the flow speed and r is the distance from the centre of the pipe in the radial direction. What is the shear stress on the pipe wall What is the shear force exerted by the oil on a 1m lo..

  Draw a small sketch that shows a situation

Name three types of metamorphic foliations, and draw a small sketch that shows a situation where a metamorphic foliation could cause problems in an excavation.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd