Pollution Issues II
Pollutant
Sources
Comments
Heavy metals,
mercury, lead,
cadmium, etc.
Coal fired power plants,
mercury is present in the
ash and is reduced to
mercury vapor
Environmental poison, health hazards to humans, difficult to
capture because concentrations are very low.  Future
regulations will impose far more stringent standards.
Fine
particulates,
sulfates,
aromatics, etc.
Coal fired power plants,
but also to a lesser extent,
cars, (diesel), and
conventional turbines
Apparent health hazard,  statistical data point to strong
correlations between fine particulate emissions from coal
fired power plants and mortality rates.  Particles smaller
than 10 micron are unregulated, are a category of particular
concern as they tend to make it into the lung where they get
captured.   Regulations are still being discussed.
Visual pollution from power plant haze (e.g. Grand
Canyon).
Carbon dioxide
Any fossil fuel based
power source, coal plants,
gas plants, cars, machinery
etc.
Climate change and environmental change, global impact,
direct human impact is considered minimal.
Carbon dioxide is the normal end result of power generation
from fossil fuels, it is therefore difficult to avoid it.