NOVELTY - Producing fermentation product from a lignocellulose containing material, involves: (a) pretreating the lignocellulose-containing material; (b) introducing dissolved air flotation sludge to the pretreated lignocellulose containing material; (c) exposing the pretreated lignocellulose-containing material to a hydrolyzing enzyme; and (d) fermenting with a fermenting organism.    USE - For producing fermentation product from lignocellulose containing material (claimed); to produce fermentable sugars, which is useful to produce fermentation products, such as renewable fuels and chemicals; for producing any fermentation product include alcohols (e.g. ethanol, methanol, butanol); organic acids (e.g. citric acid, acetic acid, itaconic acid, lactic acid, gluconic acid); ketones (e.g. acetone); amino acids (e.g. glutamic acid); gases (e.g. hydrogen and carbon dioxide); antibiotics (e.g. penicillin and tetracycline); enzymes; vitamins (e.g. riboflavin, B12, beta -carotene); and hormones; to produce other products include consumable alcohol industry products, e.g. beer and wine; dairy industry products, e.g. fermented dairy products; leather industry products and tobacco industry products.    ADVANTAGE - The method increases the efficiency of producing fermentation products; reduces enzyme loading in hydrolysis of lignin containing biomass slurry; reduces the overall costs of the biomass conversion processes; is economically beneficial; increases the production of fermentation products while at the same time recycling and using natural waste from agricultural processes that would otherwise have to treated using costly treatment processes and/or discarded; reduces or alleviates the need to add nitrogen to the biomass slurry for the fermentation process; and facilitates a lowering of the enzyme loading used to achieve the same target conversion percentage.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) enhancing (M2) enzymatic hydrolysis of a lignocellulose-containing material, involving: (a) introducing an lignin blocking amount of dissolved air flotation sludge to the lignocellulose-containing material, and (b) exposing the lignocellulose-containing material to a hydrolyzing enzyme; and    (2) a mixture comprising lignocellulose-containing material; dissolved air flotation sludge; and hydrolyzing enzyme.