TECHNOLOGY FOCUS - TEXTILES AND PAPER - Preferred Process: Preferably the acid and neutral cellulases used have optimum activity at a pH of 4.5 - 7. The fatty alcohol polyglycol ether (b) preferably has the formula (I).R1 = 16-22 C linear alkyl residue;n = 1-30.The buffer salts (c) are selected e.g. from alkali(ne earth) sulfates, phosphates and citrates. The collector mixture is used e.g. in an amount of 0.01-3.0 wt. % on the printed paper. Flotation is carried out at a weight ratio paper to water of 1:5 to 1:100 and preferably at a temperature of 40-60degreesC and a pH of 4.5-7.5. EXAMPLE - A sample of printed paper (250 g; 1:1 newsprint/magazines) was introduced into a pulper containing water at 50degreesC to give a pulp concentration of 10 % and stirred at 3500 rpm. The paper was allowed to swell for 10 minutes, then 10 ml of an aqueous solution (pH 6.5-7) containing 0.04 wt. % Forylase SW5056 (on final concentration) was added - alone (1) or in combination with an additive (0.1 wt. % Na2CO3, 2 wt. % H2O2, and 2 wt. % Na silicate, on final concentration) -(2), and the paper was beaten for 15 minutes. The fibre pulp, diluted to 10 % concentration with water, was passed to an air flotation unit into which air was blown through a perforated plate while the foam containing the dye particles removed from the paper formed on top and was removed. The time for complete removal of the dye-containing foam was 10 minutes. A control run was carried out using, instead of the enzyme agent according to the invention, 20 ml of an aqueous solution (pH 6.5-7) containing 0.4 wt. % Olinor RST (RTM, fatty acid Na salt) (on final concentration) - alone (V1) or in combination with an additive (1 wt. % NaOH, 2 wt. % H2O2, and 2 wt. % Na silicate, on final concentration) -(V2). The recovered cellulose fibres were tested to determine the number of colored spots per 1.5 cm2 and the degree of whiteness (on a scale white = 100 and black = 0). Results were as follows : Number of colored spots/1.5 cm2 , Forylase, no additives 35; Olinor RST, no additives 33; Forylase, with additives 29; Olinor RST, with additives 27. Degree of whiteness: Forylase, no additives 62; Olinor RST, no additives 52; Forylase, with additives 81; Olinor RST, with additives 82. The results showed almost identical results using considerably smaller amounts of Forylase according to the invention than of the previously used reagent Olinor RST.