Effect of nitrate availability on chloroform production during CT destruction
- Washington State Univ., Pullman, WA (United States). Chemical Engineering Dept.
- Battelle Pacific Northwest, Richland, WA (United States)
The biological degradation of carbon tetrachloride (CT) produces two potential end products: chloroform (CF) and carbon dioxide. Previous research indicated that, under denitrifying conditions, the percentage of CT that would be degraded to CF may be a function of the availability of electron acceptors. Hence, a set of experiments was completed using a denitrifying consortium capable of transforming carbon tetrachloride (CT) which was cultured from aquifer sediments from the US Department of Energy`s (DOE`s) Hanford Site. These experiments allowed determination of the yield of CF from CT under two different conditions. In the first set of conditions, nitrate was added to the reactor on a daily basis; in the second, daily feeding of nitrate was suspended after 1 week of reactor operation so that the nitrate was depleted. The data presented here indicate that no direct link can be established between CF production and the availability of nitrate. In addition, CF production can be represented as a constant yield from CT depletion. Finally, when described using first-order reaction kinetics, the rate at which CT is degraded is not dependent on nitrate availability.
- OSTI ID:
- 474266
- Report Number(s):
- CONF-950483-; ISBN 1-57477-005-5; TRN: IM9723%%156
- Resource Relation:
- Conference: 3. international in situ and on-site bioreclamation symposium, San Diego, CA (United States), 24-27 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of Bioremediation of chlorinated solvents; Hinchee, R.E.; Leeson, A. [eds.] [Battelle Memorial Inst., Columbus, OH (United States)]; Semprini, L. [ed.] [Oregon State Univ., Corvallis, OR (United States)]; PB: 348 p.; Bioremediation, Volume 3(4)
- Country of Publication:
- United States
- Language:
- English
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