P. Moslehi - Chemical & Petroleum Engineering, Sharif University of Technology
M. Vossoughi - Chemical and Petroleum Engineering, Sharif University of Technology
Iran Alemzadeh - Chemical Engineering, Sharif University of Technology

The amount of petroleum hydrocarbon and heavy metals in sediment of Persian Gulf’s shore at ۸ selected stations were determined and showed the maximum of ۱۴۳.۶ and ۵۸.۶ mg/kg sediment, respectively. The above maximum amounts were related to Emam Hassan zone which is located at ۵۰ kilometers to west Boushehr port. Bioremediation of contaminated sediment were studied in slurry and solid state fermentation. ۸ bacteria types were isolated. Four species Em۲, SH, GN۱ and GN۳ presented maximum PAH (Poly Aromatic Hydrocarbons) removal efficiency. Biodegradation efficiency under slurry conditions was observed after about ۴۵ days which during this period, naphthalene and phenanthrene showed ۷۳ and ۶۶% removal efficiency, respectively. Under solid-state conditions, microbial activity of mixed and pure culture was studied. The results presented that the mixed culture due to strength and tolerance of different strains for growth, showed higher degradability compared to pure strains, but due to insufficient mixing under solid state conditions, mass transfer rate of nutrient reduced which caused to reduce cell activity, therefore removal efficiency under slurry conditions was higher.

Hydrocarbon Pollutant, Heavy metal, Persian Gulf Coast, Bioremediation, Solid Phase Bioreactor