Kinetics of Vapor-Phase Mercury Uptake by Virgin and Sulfur-Impregnated Activated Carbons

Journal of the Air & Waste Management Association
Radisav D VidicRobert C Thurnau

Abstract

The injection of powdered activated carbon (PAC) into combustion flue gas, with subsequent collection in a particulate control device, and granular activated carbon (GAC) fixed-bed adsorption offer new promise for achieving high-quality air emissions with respect to elemental mercury concentrations. One of the key parameters that governs the applicability of adsorption technology to flue gas cleanup is the rate of vapor-phase mercury removal, which was the main focus of this study. The kinetics of vapor-phase mercury uptake by a virgin bituminous coal-based activated carbon (BPL), a commercially available sulfur impregnated activated carbon (HGR), and a BPL carbon impregnated with sulfur at 600 (o)C (BPL-S) was evaluated as a function of temperature and elemental mercury concentration. For all three carbons, an increase in mercury concentration and a decrease in temperature resulted in an increased overall mercury uptake. The rate of mercury uptake by HGR carbon was slower at higher temperatures due to the change in sulfur structure, which induced a decreased number of terminal sulfur atoms available to react with mercury. For a given flue gas temperature, an increase in mercury concentration resulted in slower mercury uptake k...Continue Reading

References

Aug 1, 1994·Environmental Science & Technology·S V KrishnanW Jozewicz

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Citations

Dec 24, 2003·Environmental Science and Pollution Research International·Rong YanJoo Hwa Tay
Mar 8, 2014·Environmental Technology·K Suresh Kumar ReddyC Srinivasakannan
Jan 12, 2019·Environmental Science and Pollution Research International·Hui LiuXu Yan
Aug 12, 2004·Journal of the Air & Waste Management Association·Chung-Shin YuanChung-Hsuang Hung
May 18, 2001·Journal of the Air & Waste Management Association·S D SerreS B Ghorishi
Oct 22, 2002·Environmental Science & Technology·Paul T Bolger, David C Szlag
May 11, 2006·Environmental Science & Technology·Joo-Youp LeeRajender S Varma

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