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A comparative study...
A comparative study of enzymatic and Fenton pretreatment applied to a birch kraft pulp used for MFC production in a pilot scale high-pressure homogenizer
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- Hellström, Pia, 1960- (author)
- Karlstads universitet,Institutionen för ingenjörs- och kemivetenskaper (from 2013),Akzo Nobel Pulp & Paper Performance Chem AB, Bleaching Chem Applicat RD&I, Bohus, Sweden.;Karlstad Univ, Karlstad, Sweden
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- Heijnesson-Hulten, Anette (author)
- Akzo Nobel Pulp & Paper Performance Chem AB, Bleaching Chem Applicat RD&I, Bohus, Sweden.
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- Paulsson, Magnus (author)
- Mittuniversitetet,Avdelningen för kemiteknik,Akzo Nobel Pulp & Performance Chem AB, Bleaching Chem Applicat RD&I, Bohus, Sweden.;Mid Sweden Univ, Sundsvall, Sweden.
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- Håkansson, Helena (author)
- Karlstads universitet,Institutionen för ingenjörs- och kemivetenskaper (from 2013),Karlstad Univ, Chem Engn, Karlstad, Sweden
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- Germgård, Ulf, 1950- (author)
- Karlstads universitet,Institutionen för ingenjörs- och kemivetenskaper (from 2013),Karlstad Univ, Pulp Technol, Karlstad, Sweden
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(creator_code:org_t)
- TAPPI Press, 2016
- 2016
- English.
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In: TAPPI Journal. - : TAPPI Press. - 0734-1415. ; 15:6, s. 375-381
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Abstract
Subject headings
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- Microfibrillated cellulose (MFC) was produced in pilot scale from a bleached birch (Betula verrucosa) kraft pulp that was pretreated with either Fenton's reagent or with a combined mechanical and enzymatic method used at the Centre Technique du Papier (CTP; Grenoble, France). The change in fiber fibrillation during the homogenization treatment was monitored by analyzing the fiber and the fines content, size fractionation, rheological properties and visualization by light-and scanning electron microscopy (SEM). The Fenton pretreatment resulted in MFC suspensions that contained a high amount of small sized elements. After five passes through the high-pressure homogenizer, the amount of particles smaller than 20 mu m was 37% for the Fenton pretreated MFC compared to 13% for the enzymatically (endoglucanase) pretreated MFC. Altogether, the Fenton pretreatment enabled preparation of MFC with a higher degree of fibrillation after the same number of passes through the high-pressure homogenizer. Another option is to produce MFC of the same amount of fibrillation as after an enzymatic stage, but at significantly lower energy consumption.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Keyword
- Chemical Engineering
- Kemiteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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