In this study a rapid at-line ATP (adenosine triphosphate) analysis is applied in papermaking. This ATP analysis takes less than a minute, and the information can be utilized instantly to adapt the biocide program. The study shows the effect of different biocide strategies at paper mills. Comparison is made between oxidative and reductive biocides on the one hand, and on the other hand between ...

various kinds of chemicals are used in papermaking to enhance paper properties and to improve efficiency of the production process. in the presence of cationic starch as an anionic charge catcher, effects of nano silica/cationic polyacrylamide complex on retention, drainage time, water volume drained by dynamic drainage jar and properties of paper recycled from old corrugated container were inv...

This paper presents an optimization strategy for a broke system design and operation in papermaking process. A multiobjective stochastic optimization model is presented featuring (i) a stochastic two-state Markov process based submodel for the broke tower, (ii) an operational submodel for the optimization of the broke dosage, and (iii) a multiobjective design problem. An efficient optimization ...

The analysis of the density of papermaking mould screen imprints is instrumental in dating, localizing and classifying papers. By dividing digital reproductions of paper structures into spots, the AD751 software offers a precise measurement tool with rich statistical possibilities, both quantitative and qualitative. AD751 is based on the Fourier transform. The technique of locating the frequenc...

Starch is one of the most important polymers for humanity: It comprises the largest single component of our food energy, and is also an important industrial polymer, for example, it is used in papermaking, biofuels, and the food and pharmaceutical industries as an additive with diverse uses. On one level, it is simple: a polymer of ➤ Starch is the largest component of our food energy and has im...

We describe a multilayer perceptron model to predict the laboratory measurements of paper quality using the instantaneous state of the papermaking production process. Actual industrial data from a pilot paper machine was used. The final model met its goal accuracy 95.7% of the time at best (tensile index quality) and 66.7% at worst (beta formation). We anticipate usage possibilities in lowering...

The synthesis and characterization of a novel fixative, guar gum-graftpoly(acrylamide-co-diallyldimethylammonium chloride) (GG-g-p(AM-coDADMAC)) polymer is described. The grafted polymer proved to be effective at adsorbing hydrophobic wood resin particles onto papermaking fibre surfaces, thus removing wood resins from the water phase where they have a tendency to aggregate and form troublesome ...

Recycled fiber use introduces fines, fillers, microbiological contaminants and stickies contaminants to the papermaking system. Deinking processes are designed to remove or control these contaminants. Important considerations in selecting a deinking processes are the type of wastepaper to be deinked and the desired quality of the deinked pulp. These will determine the extent to which contaminan...