industrial waste watcher

Articles & Data

Data and Background Papers

  • Coal Combustion Residues and Mercury Control – Chapter 9 excerpted from 2002 USEPA interim report on mercury emissions from coal-fired utilities

Use of Hg emission control technologies on coal fired electric utility boilers will probably increase the amount of Hg in certain types of CCRs,and also could change the composition and physical properties of these materials, possibly impacting their suitability for commercial reuse and recycling applications. Many of the potential retrofit Hg control technologies for coalfired electric utility power plants (discussed in Chapter 7 of Reference 9) remove Hg from the flue gas and concentrate the captured Hg into CCRs (i.e., fly ash collected by PM control devices or solids/sludges generated by wet FGD scrubbers). Concern has been raised as to whether the Hg in the CCRs may later be re-released back into the environment.” Ch.9, P.9-1 [emphasis added] <http://www.epa.gov/nrmrl/pubs/600r01109/600R01109chap9.pdf>