Encyclopedia of Environmental Science and Engineering, Volume I and II

808 OIL SPILLAGE INTO WATER—TREATMENT

γ

γ

γ

γγγ

o w

o/w

so/w

Water

Oil

so/w, Spreading Coefficient For Oil On Water,

=

Measured Value For Kuwait Crude Oil On Sea Water

so/w = 61 - 28 - 22

= 11 Dynes/cm

w o o/w

FIGURE 2 The spreading behavior of spilled oil.

Film Thickness

Inches x 10–6

Appearance

Of Film

Approx.

Gals./Sq. Mile

1.5 Barely Visible 25

3.0 Silver Sheen 50

6.0 First Trace Of Color 100

12.0 Bright Bands Of Color 200

80.0+ Dark Colors 1330+

Oil

Spill

Water

Column

FIGURE 3 Oil slick appearance during spreading.

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