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Score 0/41 Timer 10:00
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Hint Answer % Correct
The overall goal of AMD prevention techniques is to eliminate....?Availability of oxygen
77.8%
The overall goal of AMD prevention techniques is to eliminate....?water
77.8%
Name 3 factors that influence oxidation rateBacterial Activity
66.7%
Name 3 factors that influence oxidation ratepH
66.7%
The overall goal of AMD prevention techniques is to eliminate....?sulphides
66.7%
The 5 basic methods to control AMD generation:Exclusion of water
66.7%
The 5 basic methods to control AMD generation:neutralization
55.6%
The 5 basic methods to control AMD generation:Exclusion of oxygen
55.6%
Acid production can be reduced by _______ discharge temperaturelowering
55.6%
Name two techniques used to separate the sulfides in the tailingsflotation
55.6%
Name two techniques used to separate the sulfides in the tailingsgravimetric methods
55.6%
Name four parameters that need to be monitored for recoveries to reduce water infiltration.the quality of groundwater
55.6%
By how much does Bacteria such as Thibacillus ferrooxidans increase the rate of AMD?20-1000 times
55.6%
Name four factors that influence the effectiveness and quality of water covering method.water movement
55.6%
Adding ______ materials will raise the pH and help reduce AMD productionalkaline
44.4%
What does CCBE stand for (CEBC in french)Covers with Capillary barrier effect
44.4%
2 disadvantages of desulphurizationhigh cost
44.4%
The diffusion coefficient of oxygen in water is approximately ___ times lower than it is in air. 10000
44.4%
What are the two type of movement wind can induce? local (waves and eddies)
44.4%
What are the two type of movement wind can induce? global (forms currents across the tank)
44.4%
Name four parameters that need to be monitored for recoveries to reduce water infiltration.surface erosion
44.4%
Hint Answer % Correct
Name four factors that influence the effectiveness and quality of water covering method. release of suspended metals
44.4%
Name four factors that influence the effectiveness and quality of water covering method. particle suspension
44.4%
Name 3 factors that influence oxidation rateTemperature
33.3%
The 5 basic methods to control AMD generation:Waste Conditioning
33.3%
The 5 basic methods to control AMD generation:eliminating the action of bacteria
33.3%
Name 3 ways a multilayer cover is used to prevent AMDcontrol gas migration
33.3%
Name four parameters that need to be monitored for recoveries to reduce water infiltration.the amount of leachate collected
33.3%
Dissolution fo metals in water is caused byoxidation of sulphide minerals
22.2%
2 disadvantages of desulphurization2 types of residues
22.2%
In which layer of the multilayer recovery geocomposites are used?low permeability layer
22.2%
What are the factors used to determine the method that should be used to prevent AMD? duration of effectiveness
22.2%
Dissolution fo metals in water is caused bydecrease in pH
11.1%
Name 3 ways a multilayer cover is used to prevent AMDReduce water infiltration
11.1%
Name 3 ways a multilayer cover is used to prevent AMDprevent exchanges between the waste and the environment
11.1%
Name four parameters that need to be monitored for recoveries to reduce water infiltration.differential settlement
11.1%
What are the factors used to determine the method that should be used to prevent AMD? PA and PN
11.1%
What are the factors used to determine the method that should be used to prevent AMD? characteristics of the residues
11.1%
What are the factors used to determine the method that should be used to prevent AMD? environmental conditions
11.1%
What are the factors used to determine the method that should be used to prevent AMD? sensitivity of receiving face
11.1%
Name four factors that influence the effectiveness and quality of water covering method.oxygen transportation process
11.1%

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Created May 28, 2012ReportNominate
Tags:review

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