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Coal Ash Ponds and Ash Disposal Issues Webinar - Part II - Hot Topic Hour January 14, 2011
Two very enlightening days of discussions on the CCR issue. The extended period for public comments on the proposed rule on Coal Combustion Residuals (CCR) (commonly referred to as coal ash) concluded on November 18, 2010. According to the speakers we can expect a final rule promulgated in 2011 or 2012. The big question is “Will the final rule classify CCR as special wastes subject to regulation under Subtitle C of RCRA (Resource Conservation and Recovery Act) when destined for disposal in landfills or surface impoundments (essentially hazardous waste) or as non-hazardous wastes regulated under Subtitle D of RCRA?” If EPA decides to classify CCR as “hazardous,” under Subtitle C, EPA would create federally enforceable requirements for ash management, including waste generation, transportation and disposal. If CCR is declared non hazardous, under Subtitle D, EPA would only mandate a set of minimum national standards and leave it up to state governments and citizen litigation to enforce them.
Revision Date: 1/14/2011
Tags: 221112 - Fossil Fuel 化石燃料, Gradient, Clyde Bergemann, Frontier GeoSciences, Pneumatic Conveyor, Conveying, Testing
Patrick Garcia Strickland, Laboratory Director at Frontier GeoSciences, Inc., discussed metals mobility in coal combustion residues and analytical techniques for monitoring flyash ponds. Knowledge of the ability of metals to be released from coal combustion residues is an important factor in determining the potential effects on the environment. At the end of the presentation there was a discussion of the benefits of leaching the metals out of the flyash at the plant site. Coal –fired power plants can make 30 percent hydrochloric acid and at the same time leach metals from the flyash. The metals are captured in ion exchange resins and the purified acid is sold. This will make higher chlorine coals more attractive and result in a metal free fly ash, rare metals, hydrochloric acid and gypsum as byproducts.
Revision Date: 1/14/2011
Tags: 221112 - Fossil Fuel 化石燃料, Frontier GeoSciences, Testing