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Applying Enzymatic treatment and Refining Sequence to Investigate Their Effect on Properties of Pulp and Paper Produced from Mixed Office Waste Paper | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Volume 35, Issue 2 - Serial Number 71, July 2020, Pages 195-204 PDF (949.76 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijwpr.2020.341834.1600 | ||
| Authors | ||
| Mohammad Ali Hossein1; Mohammad Talaeipoor* 2; Amir Hooman Hemmasi3; behzad baziyar4; Saeed Mahdavi5 | ||
| 11- Ph.D., Department of Wood and Paper Science, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran | ||
| 2Associate Prof., Department of Wood and Paper Science, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran, Email: m.talaeipoor@srbiau.ac.ir | ||
| 3Prof., Department of Wood and Paper Science, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran | ||
| 4Associate Prof., Department of Wood and Paper Science, Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran | ||
| 5Associate Prof., Wood & Forest Products Division, Research Institute of Forests and Rangelands, Agriculture Research Education and Extension Organization, Tehran, Iran | ||
| Abstract | ||
| The effect of applying the sequence of enzymatic treatment and refining was investigated on the properties of deinked pulp from mixed office waste paper (MOW). Refining was applied for 700 and 1500 revolutions. Enzymatic treatment was applied for 60 minutes with temperature of 60°C and 13% of consistency. Applying enzymatic treatment led to decrease in strength properties of paper and also decrease in freeness of the pulp. The refining process resulted in increase of paper properties and decrease in freeness of the pulp. By applying enzymatic treatment before refining, the freeness of pulp changed significantly so that, the freeness of the pulp was 496 and 390 for 700 and 1500 refining revolution respectively just for refining but these numbers changed to 397 and 544 for same revolutions for “enzymatic treatment + refining” sequence. In a normal condition increase of refining revolution lead to decrease in pulp freeness but that was interestingly the freeness increased for 1500 refining revolution. This means that the enzymatic treatment was effective. Generally, refining itself improved the quality parameters of pulp and paper, but applying this process after enzymatic treatment changed everything. | ||
| Keywords | ||
| Cellulase; Refining; Pulp; ERIC; MOW; Optical properties | ||
| References | ||
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