AQS Sustainable Practices & Conservation 4

Question 1

When evaluating green chemistry alternatives for industrial solvents, an air quality specialist prioritizes compounds with:

Accepted Answer

High boiling points and low vapor pressure to minimize VOC evaporation

Answer

High boiling points and low vapor pressure mean solvents evaporate slowly, minimizing VOC release to the atmosphere and reducing ozone precursor emissions.

Question 2

Demand-controlled ventilation (DCV) systems improve building air quality sustainability by:

Accepted Answer

Adjusting outdoor air intake based on real-time CO₂ sensors to match actual occupancy

Answer

DCV uses CO₂ sensors as a proxy for occupancy to supply only the outdoor air needed, maintaining good IAQ while reducing energy use and associated emissions.

Question 3

The 'social cost of carbon' metric is relevant to air quality decision-making because it:

Accepted Answer

Quantifies the economic damage from CO₂ emissions to inform cost-benefit analysis of controls

Answer

The social cost of carbon estimates the monetized damage from emitting one additional ton of CO₂, providing a value used in regulatory cost-benefit analyses.

Question 4

A facility implementing zero-liquid-discharge (ZLD) technology for scrubber wastewater indirectly benefits air quality by:

Accepted Answer

Enabling reuse of scrubbing liquid, maintaining scrubber efficiency and preventing pollutant bypass

Answer

ZLD systems treat and recycle scrubbing liquid, ensuring the scrubber operates continuously at design efficiency without pollutant bypass due to liquid disposal constraints.

Question 5

Which renewable energy technology eliminates combustion emissions entirely at the point of electricity generation?

Accepted Answer

Photovoltaic solar panels

Answer

Photovoltaic solar panels convert sunlight directly to electricity through the photoelectric effect with no combustion and no point-source air emissions.

(AQS) Air Quality Specialist Certification Practice Test

(AQS) Air Quality Specialist Certification Practice Test

AQS Sustainable Practices & Conservation 4