Using Oxone and TAED activator in non-chlorine bleaching of soda bagasse pulp
Author:
Zeinaly Farhad1, Gabov Konstantin2, Kanåni Sula Hadi3, Babavand Arash4, Fardim Pedro2
Affiliation:
1. Young Researchers and Elite Club, Karaj Branch , 125638 Islamic Azad University , Karaj , Iran 2. Laboratory of Fiber and Cellulose Technology, Department of Chemical Engineering, Faculty of Technology , Åbo Akademi University , Turku , Finland 3. Department of Wood and Paper Science and Technology, Faculty of Natural Resources , 48425 University of Tehran , Karaj , Iran 4. Department of Pulp & Paper Technology, Faculty of Wood & Paper Engineering , 123290 Gorgan University of Agricultural Sciences and Natural Resources , Gorgan , Iran
Abstract
Abstract
Bagasse fiber has been used in the production of bleached chemical pulp by the Pars Paper Company. In this company, a conventional three-stage sequence of hypochlorite, alkaline extraction and second hypochlorite (HEH) is applied in pulp bleaching. Pulp bleaching is one of the most important environmental pollutant stages in the pulp and paper industry. In this research, the bleaching of soda bagasse pulp by applying Oxone and TAED-activator in non-chlorine bleaching sequences has been investigated. The unbleached pulp, with kappa number of 20, 955 ml/g viscosity and 37 % brightness, was prepared from Pars Paper Company. Results indicated that, the TAED at the first and second stages were more effective than in the Oxone stages. Moreover, the sequences, which contained TAED- and Oxone-second-stage, could reach the minimum level of kappa (1.7), but the highest brightness (80 %) was attained by using only TAED with a comparatively high level of pulp viscosity (752).
Publisher
Walter de Gruyter GmbH
Subject
General Materials Science,Forestry
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