ISOLATION OF BACTERIA DEGRADING CARBAZOLE UNDER MICROAEROBIC CONDITIONS, IE NITROGEN GAS SUBSTITUTED CONDITIONS

Microorganisms degrading carbazole (CA), a model substrate of heterocyclic nitrogen compounds in crude petroleum oil, were screened under microaerobic conditions, i,e, nitrogen gas substituted conditions, Eight bacteria,vere isolated and identified, For example, Bacillus sp. KUKK-4 degraded 31% of CA when cultivated for 28 days in a medium initially containing CA at 1000 mg/l with shaking under the microaerobic conditions.