Utilization of hydrocarbons of two types of crude oil by the action of one species of bacteria and two species of fungi and synergism between them

الملخص EN

This research includes many dimensions aims to know the range of capability of Bacillus cereus (Bc) and each of two fungi Aspergillus niger (An) and Penicillium vendicatum (Pv) to biodegrade each of Kirkuk crude-mid oil and Al-Qayarah crude heavy-oil by the action of above bacteria and two fungi and by synergism between them.

The results developed that capability are varied between each of bacteria and two fungi used in this research, so the percent of biodegrade of Kirkuk crude-mid oil were 63% by B.

cereus and 57% by synergism between B.

Cereus and A.

niger and 54% by P.

vendicatum and 53% by synergism between B.

cereus and P.

vendicatum and 52% by synergism between three microorganisms and 46% by synergism between A.

niger and P.

vendicatum, then the action of A.

niger at the last stage by percent 38%.

The ability for the same microorganisms to biodegrade Al-Qayarah crude heavy-oil were differ from Kirkuk crude mid-oil.

The synergism between B.

cereus and P.

vendicatum was 69%, synergism between the same bacteria and A.

niger was 67% but the synergism between three microorganisms used in this research was 54%.

The percent of biodegradation by B.

cerceus was 36% and 32% for P.

vendiactum, the synergism between two fungi P.

vendicatum and A.

niger were 31%, the last step was 29% by A.

niger.

Results of viable counts reflex the ability of biodegradation of microorganism and adaptation for the new contaminated ecology, the analysis of two kinds of crude oil by Gas-chromatography determine the data in this research.