Using Oxone and TAED activator in non-chlorine bleaching of soda bagasse pulp

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Farhad Zeinaly, Konstantin Gabov, Hadi Kanåni Sula, Arash Babavand, Pedro Fardim
Förläggare: Walter de Gruyter GmbH
Publiceringsår: 2019
Tidskrift: Nordic Pulp and Paper Research Journal
Tidskriftsakronym: NPPRJ
Volym: 34
Nummer: 4
Artikelns första sida, sidnummer: 422
Artikelns sista sida, sidnummer: 432
eISSN: 2000-0669


Abstrakt

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).


Nyckelord

activated peroxide, bagasse pulp, Oxone, peroxy acid, soda pulp, Tetraacetylethylenediamine


Dokument


Senast uppdaterad 2020-28-09 vid 03:27