Power stations mercury emission from

ADA-ES (1) A process for removing mercury emissions from coal-fired power stations by pretieating the coal. Developed by ADA-ES, Inc. and Arch Coal, Inc. ADA-ES has also developed a method for reducing mercury emissions from power stations using powdered activated carbon. See ACI. 

Mercury has become a major concern with respect to the emissions from coal-fired power stations. Systems have been operated in the field since 2001 and have provided consistent and reliable data. 

Activated carbon is an adsorbent as described in Chapter 3, Footnote 93, and in Appendix A2. One of the first large-scale uses of activated carbon as an adsorbent was in military gas masks where complete removal of contaminants was essential. Another essential application is removal of mercury contained in emissions from coal-fired power stations, medical incinerators, and in produced natural gas at wellheads. A value provided in cleaning operations by activated carbon adsorbent is that multiple solvent components can be captured within the same apparatus... 

Mass disti ibution of mercuiy across different CUBs has been reported by Lee et al. [SCSI]. This study revealed that over 1% of mercuiy from coal burning is associated with bottom ash, 60% with fly ash, 6% with gypsum and 15-34% is emitted to the atmosphere. Meij et al. [52] reported that for some coal-fired power stations in the Netherlands the mercury is generally partitioned as 25% emitted to the atmosphere and -50% is trapped in fly ash and -25% is trapped in the FGD plant. Other studies have reported emissions of 90% or more of mercury in flue gases to the atmosphere [38,53-54],... 

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