METHOD OF PREPARING SORBENT FOR REMOVING OIL FROM WATER AND SOLID SURFACES Russian patent published in 2001 - IPC

Abstract RU 2173578 C1

FIELD: oil pollution removal. SUBSTANCE: carrier with moisture content no higher than 60% is preliminarily dehydrated to 20-48% moisture. Dehydration can be achieved mechanically: carrier is either compacted at pressure up to 10 MPa or moisture is removed when molding organomineral carrier and drying it under normal conditions. Carrier can be, in particular, high-moor or transition peat and also woodworking waste (e.g. lignin). Dried carrier is impregnated under anaerobic conditions with water-insoluble carbon-containing resins releasing in common with carbon dioxide from carrier at heat treatment for 20 to 90 min at temperature by 15-30 C superior to temperature required to release water- insoluble resins, after which carrier is cooled to temperature no higher than 30 C. EFFECT: reduced expenses with no loss in oil sorption efficiency. 2 cl

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RU 2 173 578 C1

Authors

Azhgibitsev I.A.

Ostretsov V.I.

Dates

2001-09-20Published

2000-12-22Filed