Sustainable Practices & Conservation Flashcards

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

Answer: High boiling points and low vapor pressure to minimize VOC evaporation

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

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

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

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.

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

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

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.

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

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

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

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

Answer: Photovoltaic solar panels

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

Under EPA's Energy Star program, certified industrial equipment contributes to air quality goals primarily by:

Answer: Reducing energy consumption, thereby lowering emissions from power generation

Energy Star certified equipment consumes less electricity, reducing demand on power plants and thereby cutting the associated SO₂, NOₓ, and CO₂ emissions from generation.

An industrial ecology approach to air quality improvement involves:

Answer: Designing waste streams from one facility as feedstocks for another to eliminate emissions

Industrial ecology creates closed-loop systems where one facility's waste gases or materials become another's raw inputs, reducing overall emissions and resource consumption.