MICROBIAL PROBLEMS IN PAPER AND PAPERBOARD MILLS USING RECOVERED PAPER AS RAW MATERIAL

Authors : Sami İmamoğlu, Celil Atik, Arif Karademir

Pages : 179-190

View : 572 | Download : 7696

Publication Date : 2011-03-20

Article Type : Other Papers

Abstract :: Due to the decreasing limited forest resources, the increasing paper consumption and the pressure from the environmental movements, the recycled fibre has become increasingly important. Today’s modern paper and paperboard industry is the exclusive user of recycled fibre as a raw material. On the other hand, the recycled fibre inevitably presents a number of new challenges to the paper industry, as the recycled fibres are drained more slowly, often contaminated with other materials and fibre strength is diminished with the recycling number. Microbial growth is another common problem in the papermaking system. Besides the use of recycled fibre in paper and paperboard mills, the increased closure of the water and the conversion to neutral/alkaline systems exacerbate microbiological problems and decrease mill performances.  Problems caused by micro organisms that are typically encountered in paper making systems include slime spots and holes, offensive odours, corrosion, paper breaks, brightness loss, additive spoilage, and shower and stock line plugging. These problems  are costly because they lead to poor runnability, low production rates, off-quality paper, and even shortened equipment life due to accelerated corrosion rates. Microbiological growth control has therefore become more and more important within the paper industry. The proper control of microbiological growth involves properly identifying the problem and finding the best solution.
Keywords : Kağıt-karton endüstrisi, sekonder lif, mikroorganizmalar, şlaym, biyosit

ORIGINAL ARTICLE URL