Development of a Novel Pulping Method without Generating Wastewater Using a Sodium Hydroxide Pretreatment and Steam Explosion

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A novel pulping method without generating pollutants consists of a sodium hydroxide (NaOH) treatment followed by steam explosion was proposed and evaluated in this investigation. The cellulose component (degree of glucose polymerization: about 500) from Eucalyptus globlus chips treated with 10 g·dm–3 NaOH and then exploded with steam at 2.5 MPa for a steaming time of 5 min, was converted into pulp with physical properties almost the same as those of conventional hardwood pulp.

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