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Proceedings Paper

Anaerobic reductive dechlorination of perchloroethylene using periodic processes
Author(s): Patrick J. Hirl; Paul S. Yocum; James P. Earley; Robert L. Irvine
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Paper Abstract

The anaerobic sequencing batch biofilm reactor (AnSBBR) was used to select for, enrich, and modify the physiological state of one or more of the many possible microbial consortia that can participate in the reductive dechlorination of perchloroethylene (PCE). The AnSBBRs used in these studies are periodically operated, up-flow, packed column, biofilm reactors. Initial AnSBBR studies demonstrated that PCE, fed at 8 mg/L, could be reductively dechlorinated to cis-1,2-dichloroethylene (cDCE) using either methanol or acetate as a co- substrate. PCE fed at over 160 mg/L could be completely reductively dechlorinated to ethylene when acetate was used as the co-substrate and methanol as the solvent for PCE addition. These studies support the hypothesis that the extent of reductive dechlorination is determined by environmental parameters which effect the physiological state of the bacterial consortium.

Paper Details

Date Published: 9 October 1995
PDF: 8 pages
Proc. SPIE 2504, Environmental Monitoring and Hazardous Waste Site Remediation, (9 October 1995); doi: 10.1117/12.224122
Show Author Affiliations
Patrick J. Hirl, Univ. of Notre Dame (United States)
Paul S. Yocum, Univ. of Notre Dame (United States)
James P. Earley, Univ. of Notre Dame (United States)
Robert L. Irvine, Univ. of Notre Dame (United States)


Published in SPIE Proceedings Vol. 2504:
Environmental Monitoring and Hazardous Waste Site Remediation
Tuan Vo-Dinh, Editor(s)

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