𝔖 Bobbio Scriptorium
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Biodegradation of chlorinated hydrocarbons in an immobilized bed reactor

✍ Scribed by Miller, Gary P. ;Portier, Ralph J. ;Hoover, Darryl G. ;Friday, David D. ;Sicard, Jerry L.

Publisher
American Institute of Chemical Engineers
Year
1990
Tongue
English
Weight
384 KB
Volume
9
Category
Article
ISSN
0278-4491

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✦ Synopsis

A 75 liter immobilized microbe biological reactor with a bed retention time of 20.5 hours was used in a continuous flow mde to remediate contaminated groundwater containing ethylene dichloride (EDC), tetrachloroethylene, and trichloroethylene, with EDC being the predominant contaminant. The reactor was initially seeded with Xanthobacter autotrophicus, a demonstrated halogenated aliphatic substrate utilizer. The reactor was operated fin-forty-two days. Material balance determinations for primary volatile aliphatics of concern indicated an acerage of 90.2% mineralization of EDC, 81.7% of the trkhlorethylene (TCE) and 64.0% of the tetrachlorethylene (TeCE). In addition to Xan thobacter autotrophicus, four indigenous bacterial species from the groundwater had successfuUy acclimated to the reactor bed.

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