Arsenic and mercury partitioning in fly ash at a Kentucky power plant

Tanaporn Sakulpitakphon, James C. Hower, Alan S. Trimble, William H. Schram, Gerald A. Thomas

Research output: Contribution to journalArticlepeer-review

51 Scopus citations


Coal and fly ash samples were collected from a 500-MW unit at a Kentucky power plant, with the objective of studying the distribution of arsenic, mercury, and other trace elements in fly ash. The coal feed was low-sulfur, high volatile A bituminous central West Virginia coal. The plant produced a relatively low-carbon fly ash. In contrast to power plants with high-mercury feed coal, the fly ashes from the lower-mercury feed coal had low mercury values, generally not exceeding 0.01 ppm Hg. Mercury capture by fly ash varies with both the amount and type of carbon and the collection temperature; mercury capture is more efficient at lower temperatures. Arsenic in the feed coal and in the flue gas is of concern to the utility, because of the potential for catalyst poisoning in the selective catalytic reduction system (in the planning stage at the time of the sampling). Arsenic is captured in the fly ash, increasing in concentration in the more-distant (from the boiler) reaches of the electrostatic precipitator system.

Original languageEnglish
Pages (from-to)1028-1033
Number of pages6
JournalEnergy and Fuels
Issue number4
StatePublished - Jul 2003

ASJC Scopus subject areas

  • Chemical Engineering (all)
  • Fuel Technology
  • Energy Engineering and Power Technology


Dive into the research topics of 'Arsenic and mercury partitioning in fly ash at a Kentucky power plant'. Together they form a unique fingerprint.

Cite this