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US 10,501,340 B2Granted
Surfactant removal from produced waters
AssigneeConocoPhillips Company
InventorsRiley B. Needham, Sriram Solairaj
Life of this patent
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Abstract
A method for removing a surfactant from a water stream includes contacting the water stream with a particulate support having a hydrous iron oxide coating to provide a treated water stream. The treated water stream has less surfactant than the water stream.
Claims17
A method for removing a surfactant from a water stream, the method consisting essentially of:
- providing a water stream comprising produced water containing surfactant recovered from an oil well,
- contacting the water stream with a particulate support comprising sand with a hydrous iron oxide coating,
- absorbing said surfactant to said hydrous iron oxide coating to provide a surfactant-iron-sand complex, and
- separating the water stream from said particulate support to thereby provide a treated water stream comprising less surfactant than the water stream.
1 more element
Dependencies are inferred from the claim text.