To combat oil spillages and for rapid uptake of the escaped oil or oleaginous substances, there serves a process in which high-temperature-blown glass wool is hydrophobised and simultaneously bound using silicone and a starch serving as binder. The glass wool treated in accordance with this is then combined to form a cuttable, mat-shaped framework and is expediently dried at 150 DEG C. The then cohering three-dimensional framework mats are applied to the contaminated water sites and are left there for complete absorption, and are then together with the absorbed oil, subjected to intermediate storage and then mechanically or thermally disposed of or reprocessed. A corresponding adsorber is composed of this fine-fibre glass wool which is prepared and configured by coating with silicone and starch in such a way that adsorption of the oil away from the water surface or the ground surface is then possible. IMAGE
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