Another case where the actual power plant engineers know more about what is going on than do the "greenies". I know from reading comments in my IEEE pubs that wood and biomass were dirtier than coal, I was able to easily confirm this.
The advantages of wood:
1) Although both coal and wood are renewable, wood renews in a much faster cycle (decades) while coal takes millions of years to fossilize. Still, the peat being deposited in our wetlands will one day become coal, unless it is dug up and dried and burned as biomass.
The disadvantages of wood:
1) Wood is much dirtier than coal. http://www.pfpi.net/wp-content/uploads/2014/04/PFPI-Biomass-is-the-New-Coal-April-2-2014.pdf
$this->bbcode_second_pass_quote('', 'C')omparison of permits from modern coal, biomass, and gas plants shows that a even the “cleanest” biomass plants can emit > 150% the nitrogen oxides, > 600% the volatile organic compounds, > 190% the particulate matter, and > 125% the carbon monoxide of a coal plant per megawatt-hour, although coal produces more sulfur dioxide (SO2). Emissions from a biomass plant exceed those from a natural gas plant by more than 800% for every major pollutant.





