Explain one strategy to remediate acid mine drainage

Reference no: EM13229007

Acid Rock Drainage is a common environmental process that releases toxic metals, such as cadmium (Cd2+), and lots of acidity (i.e. H+) into streams and rivers. One strategy to remediate acid mine drainage is to fill the streams with carbonate rocks like limestone or calcite (e.g. CaCO3). This neutralizes the acid, AND it is also often possible to make the toxic metals precipitate out of solution if they will form their own carbonate mineral (such as CdCO3).

CaCO3 (s) <-> Ca2+ (aq) + CO3 2- (aq) Ksp =10^-8.4
CdCO3 (s) <-> Cd2+ (aq) + CO3 2- (aq) Ksp = 10^-12.2

Review the Ksp for calcite (CaCO3) above. Assuming there are no other sources of carbonate or metals other than the dissolution of this mineral, what is the solubility of calcite in g/L? Show your calculation (you will need to figure out moles/L that will dissolve into water to start, then determine g/L).

Reference no: EM13229007

Questions Cloud

Explain the best legal and ethical arguments : Explain the best legal and ethical arguments to hold William liable and then explain the best counter arguments in this situation (the arguments that William would make to deny liability). Explain your conclusion after your analysis is completed.

What range of k that makes the impulse response to zero : In the difference equation below K is a real number greater than 0. y[n) = x[n] + Ky[n] A) (2pt)Find the range of values of K that makes the impulse response grow without bound. B)

What are the best arguments for car lots : Be sure to base your conclusions on your analysis taking into account the facts provided, reasonable assumptions and the relevant law (as opposed to listing your personal opinion).

Calculate the electric current moving through : A glass tube with a cross-sectional area of 9^-2 m^2 contains an ionizd gas. The densities are 10^15 positive ions/m^ and 10^11 free electrons/m^3. Under the influence of an applied voltage, the postive ions are moving.

Explain one strategy to remediate acid mine drainage : Acid Rock Drainage is a common environmental process that releases toxic metals, such as cadmium (Cd2+), and lots of acidity (i.e. H+) into streams and rivers. One strategy to remediate acid mine drainage is to fill the streams with carbonate rock..

Define the solution at the equivalence point : There is a titration of 25.00 mL. The equevalence point is reached after 18.50 mL of 0.171 M HCl has been added . What is the initial concentration of ammonia in the solution? what is the pH of the solution at the equivalence point

Determine the upper and lower control limits for fraction : A medical facility does MRIs for sports injuries. Occasionally a test yields inconclusive results and must be repeated.

Develop the voltage loop equation in terms of current : A lossy resonator consisting of a series connected RLC circuit is attached to a voltage source Vs=Vo(e^(jpi/3)) a) Develop the voltage loop equation in terms of current i(t), R, L, C, and vs b) Find the corresponding phasor equation

Write equations for fixed-variable and average costs : Sven has decided to make and sell his grandmother's pasta. He rents a building for $600/month and pasta equipment for $300/month. The pasta costs $.20 /pound in raw materials to make . Sven can make up to 3000 pounds a month by himself.

User Account

All Pages