作者: Robert Daniel Haynes , Scott Barton Auger
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摘要: A method for removing ink from printed paper comprising: (a) pulping at least 25 wt% of which is old newsprint a consistency about 3% to obtain pulp slurry; (b) treating the slurry with an system, system comprises: (i) combination lipase and one second enzyme chosen amylase, xylanase or cellulase, (ii) non-ionic surfactant, in amounts effective release said slurry, wherein present amount 0.001 based on dry content ratio enzyme:lipase 1.2:1; (c) separating released step carried out prior deinking flotation stage.