The objective of this work was to study a process of 1,1,2,2-tetrachloroethane (TeCA) biodegradation via aerobic cometabolism by methane-utilizing and propane-utilizing microbial cultures. Both cultures were studied by means of slurry microcosm tests; the propane-utilizing culture was further studied in liquid/gas bioreactors. TeCA was biodegraded by both microbial cultures via aerobic cometabolism in the 0-600 μg/L concentration range. The process was successfully continued for several months without any apparent inhibitory or toxic effect on the microbial cultures tested. In bioaugmented microcosms, the inoculation of the propane-utilizing culture developed in the slurry microcosms led to a marked reduction of the lag-period required for the onset of TeCA degradation. The positive results obtained from the liquid/gas reactors show that it is possible to grow the isolated propane-utilizing culture in a liquid/gas bioreactor without any observable loss of TeCA degradation capacity. This conclusion is relevant with respect to the production of significant amounts of inoculum to utilize in bioaugmentation treatments.

Aerobic cometabolic biodegradation of 1,1,2,2-tetrachloroethane: a microcosms study / A. Meniconi; D. Frascari; D. Pinelli; M. Nocentini. - STAMPA. - (2006), p. 12. (Intervento presentato al convegno 7th UK Meeting - IWA UK International Researchers Conference tenutosi a Bath, UK nel 4-5 April 2006).

Aerobic cometabolic biodegradation of 1,1,2,2-tetrachloroethane: a microcosms study

MENICONI, ANDREA;FRASCARI, DARIO;PINELLI, DAVIDE;NOCENTINI, MASSIMO
2006

Abstract

The objective of this work was to study a process of 1,1,2,2-tetrachloroethane (TeCA) biodegradation via aerobic cometabolism by methane-utilizing and propane-utilizing microbial cultures. Both cultures were studied by means of slurry microcosm tests; the propane-utilizing culture was further studied in liquid/gas bioreactors. TeCA was biodegraded by both microbial cultures via aerobic cometabolism in the 0-600 μg/L concentration range. The process was successfully continued for several months without any apparent inhibitory or toxic effect on the microbial cultures tested. In bioaugmented microcosms, the inoculation of the propane-utilizing culture developed in the slurry microcosms led to a marked reduction of the lag-period required for the onset of TeCA degradation. The positive results obtained from the liquid/gas reactors show that it is possible to grow the isolated propane-utilizing culture in a liquid/gas bioreactor without any observable loss of TeCA degradation capacity. This conclusion is relevant with respect to the production of significant amounts of inoculum to utilize in bioaugmentation treatments.
2006
IWA UK International Researchers Conference
12
Aerobic cometabolic biodegradation of 1,1,2,2-tetrachloroethane: a microcosms study / A. Meniconi; D. Frascari; D. Pinelli; M. Nocentini. - STAMPA. - (2006), p. 12. (Intervento presentato al convegno 7th UK Meeting - IWA UK International Researchers Conference tenutosi a Bath, UK nel 4-5 April 2006).
A. Meniconi; D. Frascari; D. Pinelli; M. Nocentini
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/30180
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