Mill-Scale Application of Enzymatic Pitch Control During Paper Production

Abstract

Pitch problems are the most common in papermaking process in the world. The mechanism in the degradation of resinous materials in wood during seasoning of logs was studied because the seasoning might be the best way to prevent the problems. From the results of the study, an enzymatic pitch control method was developed. Lipase hydrolyzes triglycerides to fatty acids and glycerol, therefore other resinous materials may not be coagulated without triglycerides cores. When lipase was added into groundwood pulping process, the effect of the enzyme addition on the product quality was detected in the long term. The enzyme did not spoil the quality and rather gave a good effect on the product. After the establishment of this technology, several mills in Japan have started to use it.In the pulp and paper industry, pitch is an unsolved problem caused by resinous components in wood. During the pulping process these components are released and stick to the tile and metal parts of the production line, pitch also accumulates and sticks to the roll and wire of the papermachine. It stains the felts and eventually reaches the dryer section. Pitch accumulation causes paper stain and web break on the papermachine which is a severe problem in paper production. Enzymes can help alleviate these problems. Fundamental ResearchWood Extractives. Extractives from wood used in papermaking, especially organic extractives from soft wood, consist of various components. They exert a number of effects on pulping and papermaking process. These extractives are hydrocarbons, alcohol, phenols, fatty acids, stilbenes, flavonoids, tannins, lignans and various terpenes

Optimization of Burkholderia sp. ZYB002 lipase production for pitch control in thermomechanical pulping (TMP) processes

“…Variables X as explained in Table 2 Activity a R u n 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 ( Um l -1 ) Europe (Fujita et al 1992;Fischer et al 1993;Hata et al 1996;Mustranta et al 2001;Franks and Page 2002). The focus of the present article is Pinus massoniana grown under subtropical conditions in Fujian province of the People's Republic of China.…”

Fungi and Their Enzymes for Pitch Control in the Pulp and Paper Industry

“…Their enzymology and structure is discussed in several review papers, some of which also provide overviews of the wide range of industrial applications of these enzymes (Bornscheuer et al 2002;Hasan et al 2006). Lipases commercialized by Novozymes A/S (Bagsvaerd, Denmark) under the trade name Resinase A2X were successfully applied at mill scale for the enzymatic control of pitch in mechanical softwood pulping in Japan in the early 1990s (Fujita et al 1991(Fujita et al , 1992Hata et al 1996;Matsukura et al 1990). This enzymatic pitch control technology was initially developed in the 1980s by Jujo Paper Company (later Nippon Paper) in conjunction with the Japanese office of Novozymes and is still nowadays in use.…”

Lipolytic enzyme production in batch and fed-batch cultures ofOphiostoma piceae andFusarium oxysporum

“…Lipolytic enzymes have an increasing use in the food and detergent industries and recently their role in paper and pulp manufacture has been emphasized 1. 2 Lipases and esterases are enzymes that hydrolyse tri‐, di‐ and mono‐glycerides present at the oil–water interface.…”