Clemson University

BioSci Seminar Series Presents Dr. David Freedman

“Strange Bedfellows":  Positive Interactions During

Biodegradation of Chlorinated Solvents


September 27, 2013

G33 Jordan Hall

David L. Freedman, Ph.D.


Department of Environmental Engineering and Earth Sciences

Clemson University

"The co-occurrence of certain anthropogenic compounds in contaminated aquifers often results in antagonistic interactions.  For example, chloroform and 1,1,1-trichloroethane strongly inhibit the Dehalococcoides spp. required for reductive dechlorination of polychlorinated ethenes to non-toxic ethene.  However, there are certain combinations of organic contaminants that result in synergistic opportunities.  This seminar will review the beneficial interactions that occur during anaerobic biodegradation of dichloromethane by Dehalobacter spp. in combination with organohalide respiration of tetrachloroethene by Dehalococcoides spp.; and during aerobic biodegradation of benzene and chlorinated benzenes by Rhodococcus, Ralstonia, and Variovorax spp. in combination with cometabolic oxidation of cis-1,2-dichloroethene and vinyl chloride.  The pathways involved in these interactions will be described, and the implications for in situ bioremediation at hazardous waste sites will be discussed."   

Friday, September 27, 2013 at 2:30pm to 4:00pm

Jordan Hall, G-33
130 Delta Epsilon Ct., Clemson, SC 29634, USA

Event Type

Lectures / Seminars / Speakers, Seminars


Biological Sciences, College of Agriculture, Forestry and Life Sciences, Environmental Engineering and Earth Sciences, College of Engineering, Computing and Applied Sciences

Target Audience

General Public, Students, Faculty, Staff




Contact Name:

Charlie Wei

Contact Phone:


Contact Email:


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