Herek L. Clack

Research Associate Professor

Office:  2350 Hayward, 2316 GG Brown
Phone:  (734) 763-6830
Fax:  (734) 764-4292
Email:  hclack@umich.edu

Department of Civil and Environmental Engineering
2350 Hayward, 2316 GG Brown
Ann Arbor, Michigan 48109-2125

  • Ph.D. (Mechanical Engineering), University of California, Berkeley, Berkeley, CA, 1998
  • M.S. (Mechanical Engineering), University of California, Berkeley, Berkeley, CA, 1997
  • B.S. (Aeronautical & Astronautical Engineering), MIT, Cambridge, MA, 1987
  • Harry J. White Award, International Society for Electrostatic Precipitation (2013)
  • Best Paper Award, "Computational Modeling of Electrohydrodynamically-Influenced Mercury Adsorption within ESPs", 13th International Conference on Electrostatic Precipitation, 17-20 September 2013, Bangalore, India
  • National Academies, National Research Council, Board on Army Science and Technology
    • Member, Committee on Disposal of Legacy Nerve Agent GA and Lewisite Stocks at Deseret Chemical Depot (2009)
    • Member, Committee to Examine the Disposal of Activated Carbon from the Heating, Ventilation and Air Conditioning Systems at Chemical Agent Disposal Facilities (2008-2009)
  • National Academies, National Research Council, Board on Environmental Studies and Toxicology
    • Member, Committee on Changes in New Source Review Programs for Stationary Sources of Air Pollutants (2004-2006)
  • National Academies (U.S.)/Alexander von Humboldt Foundation (Germany)
    • Invited topical review, German-American Frontiers in Engineering Symposium (2005)
  • National Science Foundation
    • Faculty Early Development (CAREER) Award (2004-2009)
  • MIT Department of Aeronautics and Astronautics
    • Sixteen Distinguished Young Alumni/ae (2000)
  • National Academies, National Research Council
    • Postdoctoral Fellow (1998-1999)

Research focuses on the study, characterization, and enhancement of fluid, thermal, and mass transport processes, primarily associated with combustion and combustion emissions control.  Specific areas of interest include: droplet combustion, especially involving radiant heating effects; control of trace toxic and metallic compounds emitted as a result of fossil fuel combustion; electrostatic precipitation and novel uses of electro-hydrodynamics (EHD) to augment heat and mass transfer; particulate carbon emissions and their climate forcing effects, especially as they intersect with other air pollutant emissions.  Activities are primarily experimental in nature, with computational modeling used to extrapolate to larger scales or to experimentally challenging environments.  This research has funding from and implications for both industrial clients and federal and international agencies tasked with addressing environmental hazards relating to air quality and the emission of air pollutants.    

Clack, H.L. “Opportunities for Post-Combustion Control of Mercury Emissions from Coal Combustion.” In:  Mercury in Coal and its Energo-Chemical Processing Products (translated from the Polish), J. Golas and A. Strugala, eds., 2013.

Clack, H.L. (2012).  ”Estimates of Increased Black Carbon Emissions from Electrostatic Precipitators during Powdered Activated Carbon Injection for Mercury Emissions Control.”  Environmental Science and Technology 46 (13), pp 7327–7333.

Ammigan, K., R.M. Miller, and H.L. Clack (2012).  “Effect of Asymmetric Radiant Heating on Monodisperse Acetone-Ethanol and Acetone-Isopropanol Bicomponent Droplets.” International Journal of Multiphase Flows 38, 67-72.

Prabhu, V., T. Kim, Y. Khakpour, S. Serre, and H.L. Clack (2012).  “On the Electrostatic Precipitation of Fly Ash-Powdered Mercury Sorbent Mixtures.”  Fuel Processing Technology 93, pp. 8-12.

Ammigan, K., R.M. Miller, and H.L. Clack (2011).  “Vaporization of Multicomponent Droplets Exposed to Radiant Heating.”  Combustion Science &Technology 183, 1412-1432.

Lee, E.M. and H.L. Clack (2010).  “In situ detection of altered particle size distributions during simulated powdered sorbent injection for mercury emissions control.”  Energy & Fuels 24, pp. 5410-5417.

Clack, H.L. (2009). “Mercury Capture within Coal-fired Power Plant Electrostatic Precipitators:  Model Evaluation.”  Environmental Science and Technology 43, pp. 1460-1466.

Scala, F. and H.L. Clack (2008).  “Mercury Emissions from Coal Combustion:  Modeling and Comparison of Hg Capture in a Fabric Filter versus an Electrostatic Precipitator.”  Journal of Hazardous Materials 152, pp. 616-623.


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