Accession Number : ADA321542

Title :   Separation of Oil from Bilge Water I. Bilge Water Characteristics and the Interaction of Bilge Water with Chemically Modified Surfaces.

Descriptive Note : Interim rept. Oct 94-Sep 95,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Chang, E. L. ; Calvert, J. M. ; Koloski, T. ; Price, R. ; Ratna, B.

PDF Url : ADA321542

Report Date : FEB 1997

Pagination or Media Count : 17

Abstract : We report on the results of a project using surface characterization and novel surface-modification techniques to address the issues of developing a minimally fouling ceramic membrane filter. We have studied the physical characteristics of a synthetic bilge water mixture, examined the surfaces of the ceramic filters for evidence of fouling, and identified several surface modifications that, under laboratory conditions, work well in prevention of foulants. These surfaces, surprisingly, include hydrophobic as well as polar coatings. For the bilge water, it was discovered that detergent, at certain concentrations, may be useful in separating and coalescing oil droplets from the bilge water. Based on the results of the studies, several strategies for optimizing the removal of oil from water are suggested.

Descriptors :   *WATER, *SEPARATION, *OILS, *FILTRATION, *BILGES, REMOVAL, INTERACTIONS, MODIFICATION, PHYSICAL PROPERTIES, MIXTURES, SURFACES, CERAMIC MATERIALS, COATINGS, COALESCENCE, FOULING, DROPS, DETERGENTS, MEMBRANES, LABORATORIES, FILTERS, POLARITY, PREVENTION, HYDROPHOBIC PROPERTIES.

Subject Categories : Industrial Chemistry and Chemical Processing
      Physical Chemistry
      Marine Engineering
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE