MICROBIAL PROBLEMS IN PAPER AND PAPERBOARD MILLS USING RECOVERED PAPER AS RAW MATERIAL
Öz
: 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.
Anahtar Kelimeler
Kaynakça
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- Bozkurt, A.Y., Erdin, N., Ünligil, H., Odun Çürüten Mantarların Yaşam İstekleri ve Gelişmelerini Önleyen Maddeler, Ağaç Teknolojisi, Bölüm 4, İÜ Yayın No: 3998, s. 91-104, İstanbul, 1997.
- Atak, A., Kağıt ve Seluloz Üretim Prosesinde Şlaym Oluşumu ve Kontrolü, Seka Dergisi Teknik Bülten, 23 (1994) 179-184.
Ayrıntılar
Birincil Dil
İngilizce
Konular
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Bölüm
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Yayımlanma Tarihi
20 Mart 2011
Gönderilme Tarihi
20 Mart 2011
Kabul Tarihi
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Yayımlandığı Sayı
Yıl 2005 Cilt: 6 Sayı: 1
