abstract |
1535481 Purifying water INSTITUT FRANCAIS DU PETROLE 11 Feb 1977 [11 Feb 1976] 05750/77 Heading C1C Organic compounds (e.g. hydrocarbons or phenols) are extracted from aqueous liquids by contact with an extraction mass, comprising an inert porous carrier impregnated with an organic solvent for the compounds. |