Development Of In Situ Bioremediation Technologies For Perchlorate
In the early 1960s, research at the University of Heidelberg, Germany, by Eberhard Hackenthal and others revealed that various heterotrophic bacteria containing nitrate reductase enzymes were capable of reducing perchlorate to chloride (Hackenthal et al., 1964). The importance of this finding to the U.S. Department of Defense (DoD) and the environmental remediation community in North America would not be recognized for more than two decades, when research by Attaway et al. (1989) and later Attaway and Smith (1993) reported the reduction of perchlorate by an anaerobic enrichment culture. This research, prompted by the desire to develop a treatment process for solid rocket propellant waste streams, also spurred several lines of further research, initially including the development of ex situ biotreatment processes targeting industrial waste streams at solid rocket manufacturing facilities, and later the development of ex situ and in situbiotreatment techniques for...
KeywordsElectron Donor Vadose Zone Ammonium Perchlorate Perchlorate Concentration Perchlorate Reduction
The author wishes to thank the following individuals and organizations for their contribution to the research cited herein: Scott Neville of Aerojet; Robert Borch, Jim Deitsch, Leslie Griffin, Thomas Krug and Michaye McMaster of Geosyntec Consultants; Paul Hatzinger of Shaw Environmental, Inc.; John Coates of the University of California at Berkeley; Robert Borden of the North Carolina State University; Richard McClure of Olin Corporation; and SERDP and ESTCP.
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