BESC COMPREHENSIVE TEST BANK
VERIFIED QUESTIONS AND SOLUTIONS
PACK
●● Soil bioremediation is a widely used method for cleaning
contaminated soil at Superfund sites, with composting as a notable
example of this in-situ bioremediation technology.
True
False
Answer: False
●● Bioventing is an in-situ bioremediation technology that is highly
efficient for contaminated sites with high concentrations of halogenated
compounds.
True
False
Answer: False
●● Bioremediation methods can be conducted in-situ or ex-situ.
Generally speaking, ex-situ treatments are slower than in-situ treatments
because they are limited by mass transfer.
True
False
,Answer: False
●● Bioremediation technology that involves the installation of media
with carbon sources and possibly microorganisms within a trench that is
positioned perpendicular to groundwater flow and intersects the
contaminant plume.
- Biosparging
- Bioventing
- Biowalls
- Biosparging
Answer: Biowalls
●● Ex-situ bioremediation treatments can be conducted on suspended or
attached biomass reactors. What is the main advantage of using attached
biomass reactors compared to suspended biomass reactors?
No inhibition
No clogging
No washout
Improved mass transfer
Answer: No washout
●● Activated sludge and sequencing batch reactors are examples of
attached growth bioreactors used for the treatment of water
• True
, • False
Answer: False
●● It is a common in-situ physicochemical technique used to reduce the
concentration of hydrocarbons like BTEX.
In-situ pH control
In situ chemical reduction
Pump and treat
in situ chemical oxidation
Answer: In-situ chemical oxidation
●● A microbe is well known for degrading PCE and TCE. As a
bioremediation technology designer, you are required to provide the best
slow-release electron donor to keep a sustained degradation over time.
Which one of the following compounds would you suggest to use?
• Lactate
• Glucose
• Sulphate
• Emulsified vegetable oil
Answer: Emulsified vegetable oil
●● Bioventing and biosparging are two of the most efficient
technologies to degrade chlorinated solvents like PCE and TCE.
VERIFIED QUESTIONS AND SOLUTIONS
PACK
●● Soil bioremediation is a widely used method for cleaning
contaminated soil at Superfund sites, with composting as a notable
example of this in-situ bioremediation technology.
True
False
Answer: False
●● Bioventing is an in-situ bioremediation technology that is highly
efficient for contaminated sites with high concentrations of halogenated
compounds.
True
False
Answer: False
●● Bioremediation methods can be conducted in-situ or ex-situ.
Generally speaking, ex-situ treatments are slower than in-situ treatments
because they are limited by mass transfer.
True
False
,Answer: False
●● Bioremediation technology that involves the installation of media
with carbon sources and possibly microorganisms within a trench that is
positioned perpendicular to groundwater flow and intersects the
contaminant plume.
- Biosparging
- Bioventing
- Biowalls
- Biosparging
Answer: Biowalls
●● Ex-situ bioremediation treatments can be conducted on suspended or
attached biomass reactors. What is the main advantage of using attached
biomass reactors compared to suspended biomass reactors?
No inhibition
No clogging
No washout
Improved mass transfer
Answer: No washout
●● Activated sludge and sequencing batch reactors are examples of
attached growth bioreactors used for the treatment of water
• True
, • False
Answer: False
●● It is a common in-situ physicochemical technique used to reduce the
concentration of hydrocarbons like BTEX.
In-situ pH control
In situ chemical reduction
Pump and treat
in situ chemical oxidation
Answer: In-situ chemical oxidation
●● A microbe is well known for degrading PCE and TCE. As a
bioremediation technology designer, you are required to provide the best
slow-release electron donor to keep a sustained degradation over time.
Which one of the following compounds would you suggest to use?
• Lactate
• Glucose
• Sulphate
• Emulsified vegetable oil
Answer: Emulsified vegetable oil
●● Bioventing and biosparging are two of the most efficient
technologies to degrade chlorinated solvents like PCE and TCE.
