Fate and transport of mercury in portland cement manufacturing facilities

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2011-01-01
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Sikkema, Joel
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James E. Alleman
Say-kee Ong
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Altmetrics
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Civil, Construction, and Environmental Engineering
Abstract

The USEPA's 2010 mercury rule for non-hazardous waste burning portland cement manufacturing facilities will significantly reduce mercury emissions in the United States, but represents a substantial regulatory challenge for the industry. Development of mercury control technologies for these facilities is difficult due to widely varying levels of mercury inputs and transient emissions caused by a poorly understood mechanism of mercury loop concentration. Determination of mercury concentrations in baghouse dust and kiln feed samples from within the internal mercury loop represents another difficulty due to diverse analytical procedures. Little published literature exists on mercury sorption and desorption from these materials. Without this data, the potential for this loop to serve as a mercury control and removal mechanism is not possible. To advance knowledge of mercury fate and transport in cement manufacture facilities, this study highlighted data gaps and research needs, optimized a digestion method for determination of mercury in kiln feed and baghouse dust, and identified and tracked mercury desorption, sorption, and internal concentration at specific points within a facility demonstrating an internal mercury loop.

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Sat Jan 01 00:00:00 UTC 2011