THREE-LAYER SORBENT FOR CLEANING WATER AND SOIL SURFACE FROM CONTAMINATION WITH PETROLEUM AND PETROLEUM PRODUCTS Russian patent published in 1997 - IPC

FIELD: oil production; pipelines; environmental control. SUBSTANCE: proposed sorbent comprises cotton- containing wastes resulting from yarn spinning industry and vegetable- origin cellulose-containing wastes resulting from agriculture, said components being taken in following ratio, wt.%: cotton-containing wastes 40-70, cellulose-containing wastes 30-60. Proposed sorbent has spatially ordered frame-like lattice and porous structure. Said components are preliminarily dried and ground to develop porous structure. Sorbent has structure in form of three-layer package, in which outer layers contain cotton-containing wastes, and inner layers - cellulose-containing ones. As said cellulose-containing wastes, sorbent contains chopped straw or reeds, wood saw-dust. EFFECT: sorbent can be widely used for regenerating ecological systems polluted by spillage of petroleum and its products (during failures of oil pipelines); sorbent is extremely cheap, since it uses wastes of other industries. 3 cl, 5 tbl