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|Title: ||Pilot Plant Bioremediation of Hydrocarbon Contaminated Drill Mud - Case Study in Ghana|
|Authors: ||Osei-Twumasi, D.|
Boateng, D. A.
|Issue Date: ||2016|
|Publisher: ||Society of Petroleum Engineers|
|Citation: ||Society of Petroleum Engineers, 2016|
|Abstract: ||Hydrocarbon-contaminated drill mud waste associated with oil and gas activities constitutes a major risk
to the environment, but current conventional treatment methods have not been effective in removing Total
Petroleum Hydrocarbon (TPH). In this study, the remedial potential of nutrients addition to stimulate the
growth of indigenous microbes was harnessed to treat drill mud contaminated with hydrocarbons as an
alternative to the conventional treatment methods.
Baseline study of the hydrocarbon contaminated drill mud was carried out to establish the inherent
physicochemical and biological characteristics. Homogenized sample of the hydrocarbon contaminated drill
mud was inoculated with adequate amount of nutrient and bulking agent into various ratios of contaminated
drill mud/nutrients/bulking agent. The specification for each microcosm experiment was 0.2 m × 0.5 m ×
1.5 m for depth, breadth and length respectively.
The experimental results showed a high TPH level of 8.88 × 105 mg/kg, low nitrogen content of 0.4% and
low microbial load of 1.34 × 103 CFU/100ml for the drill mud. TPH degraded sharply, averaging 98% after
three weeks and 99.5% after seven weeks augmentation with nutrients. The trends of the other measured
parameters supported that the degradation was due to the enhanced microbial activities.
The high rate of degradation achieved in this study supports the proposition that bioremediation of drill
mud is a feasible approach to effectively remove TPH components from the hydrocarbon contaminated drill
mud. This study therefore paves way for scalable studies to be pursued in similar and/or different industrial
|Description: ||An article published in Society of Petroleum Engineers, 2016|
|Appears in Collections:||College of Science|
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