Evaluation of the bioremediation system applied for hydrocarbons removal from produced water in Heglig oil field

Mohamed Osman. Zooalnoon, Adam Musa

This paper reviewed bioremediation system applied for hydrocarbons removal form produced water in Heglig field using Phragmites Australis plant, to produce clean water and recover valuable materials from produced water with minimal negative impact on the environment. To evaluate effectiveness of bioremediation system three quantitative analysis methods (gravimetric method, spectrophotometric method and IR method) were used for determination of oil in water before and after treatment using bioremediation technology for Heglig field produced water. The results of analysis showed that determination of oil content by IR method is more accurate than by spectrophotometer and gravimetric method. According to the IR results the effectiveness of bioremediation system for hydrocarbons treatment by Phragmites Australis plant can remove more than 86.72% oil content of produced water. One qualitative analysis method (GC method) was used for determination of oil in water before and after bioremediation treatment for Heglig field and the results showed that most hydrocarbons treated by bioremediation system are n-C10 and n-C11 while components of high number of carbon (n-C22 to n-C29) are almost untreated.