Study of the Denitrification in Presence of Acetate, Benzene and Toluene
نویسندگان
چکیده
Denitrification was studied in a batch culture, using different concentrations acetate (95 and 140 ppm), benzene (25 and 35 ppm) and toluene (25 and 40 ppm). In the assays with acetate the substrate consumption efficiency (Efs) of N-NO3 and C-acetate was superior to 92%. The yield (YP/S) in the N2formation was 0.99. Contrary to this, when benzene was used the denitrification was not carried out. When toluene was used the Ef for toluene and nitrate was equal to 100% and the YP/S was 0.97 at 6 days of the assay. A decrease in the specific consumption rate in toluene presence was detected in comparison to acetate assays. It was found that toluene was completely denitrified, using an inoculum that was not acclimatized to the consumption of hydrocarbons.
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