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Main Group Chemistry Vol. 7, No. 3, September 2008, 167 Coal contains a trace level of mercury of *0.1 ppm. Mercury is a neurotoxin, and can travel long distances once emitted through the stacks of coal-burning power plants. Approximately 52% of the electricity in the US is generated through the combustion of coal. Coal is an abundant resource in the US â the US has a supply for at least 200 years. The challenge is to utilize the abundant domestic coal for energy independence in environmentally-friendly ways. With the United States Environmental Protection Agencyâs Clean Air Mercury Rule recently rescinded by the courts and currently under reconsideration by the agency, and many states promulgating their own regulations, the need exists for low-cost mercury removal techniques that can be applied to coal-burning power plants. Gasiï¬cation is also an important strategy for increasing the utilization of abundant world coal reserves in a clean and environmental-friendly manner. High-temperature capture of the trace elements mercury, arsenic and selenium helps preserve the high thermal eï¬ciency of integrated gasiï¬cation combined cycle (IGCC) plants versus low-temperature capture by activated carbons. With many states in the USA promulgating regulations for mercury control, the need exists for inexpensive mercury removal techniques that can be applied to both IGCC and coal-burning power plants. With encouragement from Professor Mercedes Maroto-Valer of the University of Nottingham and the ACS Division of Fuel Chemistry, Professor Radisav D. Vidic of the University of Pittsburgh, Dr. Yinzhi Zhang of Sorbent Technologies, and I chaired and co-organized the four sessions on ââMercury and Other Trace Elements in Fuel: Emissions and Controlââ at the joint ACSâAIChE National Meetings held in New Orleans in April 2008. The four sessions covered the control of the trace elements mercury, arsenic and selenium in coal-derived gas streams, the fate of arsenic and selenium in ï¬ue and fuel gas and the online detection of mercury in ï¬ue gas. Three eminent keynote speakers representing EPRI (Dr. Ramsay Chang), Reaction Engineering (Dr. Connie Senior) and DOE (Tom Feeley) presented overviews at the sessions. The sessions were sponsored by Main Group Chemistry. Over 15,000 people from around the world attended the conference during the week of 5 April 2008 at the New Orleans Convention Center. This special issue of the journal Main Group Chemistry is culled from some of the 29 trace metal papers presented at the four sessions on âMercury and Other Trace Elements in Fuel: Emissions and Controlâ at the joint ACSâAIChE National Meeting. We hope that you will ï¬nd the papers in this special issue informative and thought provoking. Evan J. Granite National Energy Technology Laboratory, United States Department of Energy, Pittsburgh, USA ISSN 1024-1221 print/ISSN 1745-1167 online à 2008 Taylor & Francis DOI: 10.1080/10241220802659583 http://www.informaworld.com
Main Group Chemistry – IOS Press
Published: Jan 1, 2008
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