Partitioning of semi-soluble organic compounds between the water phase and oil droplets in produced water |
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| Authors: | Faksness Liv-Guri Grini Per Gerhard Daling Per S |
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| Institution: | SINTEF Applied Chemistry, S.P. Andersens vei 15a, 7465 Trondheim, Norway. liv-guri.faksness@sintef.no |
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| Abstract: | When selecting produced water treatment technologies, one should focus on reducing the major contributors to the total environmental impact. These are dispersed oil and semi-soluble hydrocarbons, alkylated phenols, and added chemicals. Experiments with produced water have been performed offshore on the Statoil operated platforms Gullfaks C and Statfjord B. These experiments were designed to find how much of the environmentally relevant compounds were dissolved in the water phase and not associated to the dispersed oil in the produced water. Results show that the distribution between the dispersed oil and the water phase varies highly for the different components groups. For example the concentration of PAHs and the C6-C9 alkylated phenols is strongly correlated to the content of dispersed oil. Therefore, the technologies enhancing the removal of dispersed oil have a higher potential for reducing the environmental impact of the produced water than previously considered. |
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