STUDIES ON THE SULPHITE DIGESTION FOR RAYON PULP [NO. 2]

Further studies on the reactions of disulphides with sodium sulphite.

although the prior formation of an unstable intermediate is not excluded. 4. The poor conversion ofesters ofD-galacturonic acid into compounds ofL-galactonic acid appears to be due mainly to the reversible inhibition of the enzyme during the course of the reaction, and to a lesser extent to the instability of the galactonic acid derivative formed. The substance responsible for the inhibition of...

Studies on the feeding value of glycyrrhiza glabra L. pulp for sheep

Modification of Spruce Sulphite Pulp by Cellulase Treatment

Enzymatic treatment of different sulphite pulps with cellulases has been studied in this work. Endoglucanases were shown to beneficially alter the properties of both paper-grade and dissolving-grade pulps. In the case of the paper-grade pulp, the treatment with endoglucanase resulted in a considerable reduction of the pulp refining time without decrease in strength properties. While for the dis...

Chemical Studies on Sludge Digestion

Predictive Adaptive Control Aids Pulp Digestion

igestion is a hot topic in pulp production at Skeena Cellulose in Prince Rupert, British Columbia, Canada. A new continuous digester control system uses a new predictive adaptive process controller to provide closed-loop control of Effective Alkali and reduced Kappa Number variability. The installation of this controller has resulted in production cost savings of $0.60 per ton of pulp and proje...