A5014611895- Mercury impact and mitigation studies
- Coal and Its By-products
- Thermochemical Biomass Conversion Processes
- Catalytic Processes in Materials Science
- Toxic Organic Pollutants Impact
- Coal Properties and Utilization
- Analytical chemistry methods development
- Heavy metals in environment
- Planetary Science and Exploration
- Combustion and flame dynamics
- solar cell performance optimization
- Advanced Control Systems Optimization
- Air Quality and Health Impacts
- Industrial Gas Emission Control
- Iron and Steelmaking Processes
- Radiative Heat Transfer Studies
- Distributed and Parallel Computing Systems
- Water Quality Monitoring and Analysis
- Plasma Applications and Diagnostics
- Recycling and Waste Management Techniques
- Simulation Techniques and Applications
- Aerosol Filtration and Electrostatic Precipitation
- Carbon Dioxide Capture Technologies
- Spacecraft Design and Technology
- Extraction and Separation Processes
National Institute of Clean and Low-Carbon Energy
2020-2023
ADA-ES (United States)
2013-2020
Advanced Emissions Solutions (United States)
2014-2016
University of Utah
2008-2013
Reaction Engineering International (United States)
2002-2011
Ada Technologies (United States)
2011
Physical Sciences (United States)
1992-2008
SpaceX (United States)
2008
Electric Power Research Institute
2007
University of Kentucky
2007
X-ray absorption fine structure spectroscopy has been used to determine directly the oxidation states and speciation of selenium arsenic in 10 fly ash samples collected from full-scale utility plants. Such information is needed assess health risk posed by these elements understand their behavior during combustion disposal options, such as sequestration tailings ponds. Selenium found predominantly Se(IV) selenite (SeO32-) species, whereas As(V) arsenate (AsO43-) species. Two distinct types...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTViscosity of Ash Particles in Combustion Systems for Prediction Particle StickingC. L. Senior and S. SrinivasacharCite this: Energy Fuels 1995, 9, 2, 277–283Publication Date (Print):March 1, 1995Publication History Published online1 May 2002Published inissue 1 March 1995https://pubs.acs.org/doi/10.1021/ef00050a010https://doi.org/10.1021/ef00050a010research-articleACS PublicationsRequest reuse permissionsArticle Views961Altmetric-Citations116LEARN...
Abstract A kinetic model for predicting the amount of mercury (Hg) oxidation across selective catalytic reduction (SCR) systems in coal–fired power plants was developed and tested. The incorporated effects diffusion within porous SCR catalyst competition between ammonia Hg active sites on catalyst. Laboratory data simulated flue gas slipstream from were modeled. provided good fits to eight different catalysts, both plate monolith, a temperature range 280–420 °C, with space velocities varying...
Coal fueled the Industrial Revolution and global expansion of electrification in 20th century. In 21st century, coal use has declined North America Europe but continues to increase Asia. contains many elements Periodic Table, percent levels or trace amounts (parts per million parts billion). The impact these on environment via air emissions water discharges from coal-fired plants been studied, with decades research their chemical transformations within combustion systems fates upon...
Emissions of mercury to the environment, in particular air emissions, are increasing concern United States. The U.S. EPA has surveyed sources and coal-fired power plants were found discharge largest amount into atmosphere as compared other man-made sources. In December 2000, made a determination regulate emissions from electric utility boilers. Compliance with as-yet-to-be-determined regulations may necessitate additional air-pollution control devices being installed at plants.There is...
The sorption of mercury, as Hg0 and HgCl2, in a synthetic flue gas (SFG) by three activated carbons has been examined XAFS spectroscopy. consisted sulfur-activated carbon, an iodine-activated carbon derived from lignite. In addition to the occurrence behavior sulfur, chlorine, calcium, iodine were also These other elements present either activating species on or reactive components (SO2, HCl) SFG. results showed that each type behaves differently with respect mercury For iodine- carbons,...
The results of a theoretical study the formation and growth submicron flyash aerosol around single burning coal particle are presented. vaporization ash subsequent near studied because local combustion environment influences these processes strongly. A mathematical model is developed that describes transport vapor aerosol. calculation superimposed on an existing solution to problem. Included in effects convective both homogeneous heterogeneous condensation vapor. calculations show refractory...
Oxidized mercury species may be formed in combustion systems through gas-phase reactions between elemental and halogens, such as chorine or bromine. This study examines how bromine chlorine affect oxidation the gas phase. Experiments were conducted a bench-scale, laminar, methane-fired (300 W), quartz-lined reactor, which composition (HCl, HBr, NOx, SO2) was varied. In experiments, postcombustion gases quenched from flame temperature to about 350 °C then speciated measured using wet...
Selenium has unique fate and transport through a coal-fired power plant because of high vapor pressures oxide (SeO2) in flue gas. This study was done at full-scale on 900 MW with electrostatic precipitator (ESP) wet gas desulfurization (FGD) scrubber. The first objective to quantify the partitioning selenium between condensed phases scrubber inlet outlet. second determine effect operation conditions (pH, mass transfer, SO2 removal) Se removal both particulate phases. During part testing,...