Method for treating bacterial effluents containing at least...

Chemistry: molecular biology and microbiology – Process of utilizing an enzyme or micro-organism to destroy... – Destruction of hazardous or toxic waste

Reexamination Certificate

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C435S253100, C435S821000, C435S863000, C210S611000

Reexamination Certificate

active

10129627

ABSTRACT:
A process for the treatment of aqueous effluents containing at least one of the following ethers is described: ethyl tert-butyl ether (ETBE) and/or methyl tert-butyl ether (MTBE) and/or tert-amyl methyl ether (TAME) in order to reduce the concentration of these ethers. A bacteriumGordonia terraeCIP I-2194 is innoculated under aerobic conditions. In particular, a bacteriumBurkholderia cepaciaCIP I-2052 or a bacteriumAlcaligenessp. CIP I-2561 or a bacteriumMycobacteriumsp. CIP I-2562 is added in the presence of a growth substrate and, optionally, of a cobalt salt, and the ether contained in the effluents is degraded by the bacteria thus innoculated until its mineralization. The process is useable in the ether-contaminated water treatment industry.

REFERENCES:
patent: 5814514 (1998-09-01), Steffan et al.
patent: 6040154 (2000-03-01), Fayolle et al.
patent: 6254777 (2001-07-01), Hernandez et al.
patent: 6632649 (2003-10-01), Pivetau et al.
patent: 2766478 (1999-01-01), None
Fayolle et al: “Isolation of two aerobic bacterial strains that degrade efficiently ethyl t-butyl ether (ETBE)” Biotechnology Letters, GB, Kew, Surrey, vol. 20, No. 3, Mar. 1998, pp. 283-286-288, XP002115642, ISSN: 0141-5492.

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