Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1990-07-11
1992-04-14
Cintins, Ivars
Liquid purification or separation
Processes
Ion exchange or selective sorption
134 7, 210693, 210924, 431 2, C02F 128
Patent
active
051045486
ABSTRACT:
There is disclosed a method for treatment of an oil slick resulting from an oil spill on a body of water. The oil slick is treated with a mixture of a granular elastomeric gum comprising a block copolymer of ethylene/butylene and styrene and an oleochemical synthetic wax, the latter being used in amounts of from 1 to 33 weight percent of the mixture. The adsorbent mixture has a low density, typically from 14 to about 15 pounds per cubic foot and will absorb oil and form a dry solid which has a non-tacky and non-oily surface. The adsorbent mixture is broadcast on the surface of an oil slick in proportions from about 0.2 to about 1 part per weight part of oil. The wave action on the body of water is generally sufficiently turbulent to admix the absorbent with the oil of the oil slick, resulting in the formation of floating solids which are dry to the touch and which have a non-oily, non-tacky surface. These solids can be readily recovered from the water or from a shoreline after they have washed ashore.
REFERENCES:
patent: 3518183 (1970-06-01), Evans
patent: 3630891 (1971-12-01), Peterson et al.
patent: 3819514 (1974-06-01), Clampitt et al.
patent: 4066539 (1978-01-01), Hachisu et al.
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