Abstract
Wood is the most expensive fraction in the pulp production costs. Therefore, strategies for increasing wood quality such as faster growth, higher wood basic density and lower lignin content are drivers to pulp mills. The cultivation site as well as the eucalypt clones influence the wood quality, which, in turn, affects the pulp production performance. Thus, this work aims to evaluate the effect of the site on the wood quality for the pulp production. Three eucalypt clones from five different sites in Brazil were used in this study. These samples were selected aiming to represent a gradient of environmental stress. It was possible to observe a reduction in the content of extractives and lignin and an increase in the content of glucans in the sites with less environmental stress, reflecting in the production of pulp with less effective alkali demanded (reduction of 13.5 %) and an increase of 10.5 % in the kraft pulp screened yield. MAIP values of 22.7 ton/ha/year were obtained in the sites with less environmental stress, presenting a lower specific wood consumption. Through the production indicators, it was observed that the C1 clone is more adaptable to the regions of greater environmental stress than the other clones analyzed.
Funding source: Conselho Nacional de Desenvolvimento Científico e Tecnológico
Funding source: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Funding statement: Funding provided by the Brazilian National Council for Science and Technology Development (CNPq), and from the Coordination for the Improvement of Higher Education Personnel (CAPES), Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) is greatly appreciated.
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Conflict of interest: There is no conflict of interests regarding the submission.
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Chemical pulping
- The effects of high alkali impregnation and oxygen delignification of softwood kraft pulps on the yield and mechanical properties
- Bleaching
- Evaluation of pulp and paper properties produced from two new bleaching sequences
- Mechanical pulping
- The effects of wood chip compression on cellulose hydrolysis
- Physical meaning of cutting edge length and limited applications of Specific Edge Load in low consistency pulp refining
- Paper technology
- Enhancement in tissue paper production by optimizing creeping parameters such as application of various blade material (MOC) and creep pocket geometry
- Paper physics
- The effect of some office papers quality characteristics on offset printing process
- Paper chemistry
- Application of hydrophobically modified hydroxyethyl cellulose-methyl methacrylate copolymer emulsion in paper protection
- Application of cyclohexene oxide modified chitosan for paper preservation
- Application of carboxymethyl cellulose-acrylate-OVPSS graft copolymer emulsion in paper reinforcement and protection
- Coating
- Application of BBR-DCMC/KH-791-SiO2/HPDSP multifunctional protective fluid in paper reinforcement and protection
- Nanotechnology
- Research on ink blot evaluation of aged paper before and after restoration
- Chemical technology/modifications
- Physical properties of kraft pulp oxidized by hydrogen peroxide under mildly acidic conditions
- Miscellaneous
- High calcium content of Eucalyptus dunnii wood affects delignification and polysaccharide degradation in kraft pulping
- Refining gentleness – a key to bulky CTMP
- Electrospinning hydrophobically modified polyvinyl alcohol composite air filter paper with water resistance and high filterability properties
- Hydroxypropyl methylcellulose films reinforced with cellulose micro/nanofibrils: study of physical, optical, surface, barrier and mechanical properties
- Effects of localized environment on the eucalypt clones quality aiming kraft pulp production
- Oxidation process concept to produce lignin dispersants at a kraft pulp mill
Articles in the same Issue
- Frontmatter
- Chemical pulping
- The effects of high alkali impregnation and oxygen delignification of softwood kraft pulps on the yield and mechanical properties
- Bleaching
- Evaluation of pulp and paper properties produced from two new bleaching sequences
- Mechanical pulping
- The effects of wood chip compression on cellulose hydrolysis
- Physical meaning of cutting edge length and limited applications of Specific Edge Load in low consistency pulp refining
- Paper technology
- Enhancement in tissue paper production by optimizing creeping parameters such as application of various blade material (MOC) and creep pocket geometry
- Paper physics
- The effect of some office papers quality characteristics on offset printing process
- Paper chemistry
- Application of hydrophobically modified hydroxyethyl cellulose-methyl methacrylate copolymer emulsion in paper protection
- Application of cyclohexene oxide modified chitosan for paper preservation
- Application of carboxymethyl cellulose-acrylate-OVPSS graft copolymer emulsion in paper reinforcement and protection
- Coating
- Application of BBR-DCMC/KH-791-SiO2/HPDSP multifunctional protective fluid in paper reinforcement and protection
- Nanotechnology
- Research on ink blot evaluation of aged paper before and after restoration
- Chemical technology/modifications
- Physical properties of kraft pulp oxidized by hydrogen peroxide under mildly acidic conditions
- Miscellaneous
- High calcium content of Eucalyptus dunnii wood affects delignification and polysaccharide degradation in kraft pulping
- Refining gentleness – a key to bulky CTMP
- Electrospinning hydrophobically modified polyvinyl alcohol composite air filter paper with water resistance and high filterability properties
- Hydroxypropyl methylcellulose films reinforced with cellulose micro/nanofibrils: study of physical, optical, surface, barrier and mechanical properties
- Effects of localized environment on the eucalypt clones quality aiming kraft pulp production
- Oxidation process concept to produce lignin dispersants at a kraft pulp mill