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OIL SEPARATORS - OILY MOUSSE
Question: Will this hot water separator system separate all types of oily mousse?
Answer: The system will handle mousse, although it becomes increasingly limited as viscosity increases.
OIL SEPARATORS - SCIENTIFIC PRINCIPLES Question: What is the scientific principle behind this hot water system?
Answer: High viscosity increases the drag forces which significantly increase the time required for gravity separation of oil and water. Increasing the temperature reduces the viscosity thereby speeding separation.
OIL SEPARATORS - ALTERNATIVE METHODS
Question: What other methods are there to break apart oily mousse?
Answer: Stable water-in-oil emulsions (oily mousses) can be broken apart by heating, injecting chemical emulsion breakers or by a combination of heat and emulsion breaker. Further refinement and efficiencies of the application of these methods toward breaking apart oily mousse continues to be the subject of research and experimentation. However, the Juniper Class separation system is equipped for both heat transfer and emulsion breaker injection to take advantage of the potential of these methods.
Other methods used rely upon centrifugal separation and filtration, though they are not generally applied for large-scale recovery operations in the marine environment.
OIL SEPARATORS - ALTERNATIVE SYSTEM COST
Question: What were the costs of these alternative systems?
Answer: A formal cost estimate for the Dutch Jastram-Werke system was not developed. However, the costs likely exceed gravity type separators.
OIL SEPARATORS - SYSTEM COMPARISONS
Question: Please submit any technical papers that compare the efficiency of the hot water separator system to the alternative systems that were evaluated?
Answer: The following technical paper provides an excellent summary of the state of the technology (a copy has been provided for your review):
Nordvik, Atle B., Simmons, J. L., Bitting, K. R., Lewis, A., & Strom-Kristiansen, T. Oil and Water Separation in Marine Oil Spill Clean-up Operations. Spill Science & Technology Bulletin, Vol. 3, No 3, pp. 107-122, 1996.