Results 101 to 110 of about 10,608,979 (207)

Isolation and Characterization of Cellulose Nanocrystals from Rejected Fibers Originated in the Kraft Pulping Process. [PDF]

Polymers (Basel), 2018
Aguayo MG, Fernández Pérez A, Reyes G, Oviedo C, Gacitúa W, Gonzalez R, Uyarte O.   +6 more
europepmc   +1 more source

Resin Profile in a Bleached Kraft Pulp Process

, 2012
Målet med projektet var att utreda hur mängden och sammansättningen av hartser varierade i den blekta björkmassan under tillverkningsprocessen på pappersbruket SCA Packaging Munksund. Att göra en litteraturstudie för att ta reda på vilka metoder som kan användas för att förbättra avhartsningen var en annan del av målet.
openaire   +1 more source

Utilization of sodium borohydride (NaBH4) in kraft pulping process

, 2009
Aim of this study is to investigate the effect of adding sodium borohydride (NaBH4) in kraft pulping. First of all, six kraft cooks were carried out for varying active alkali and sulfidity.
Gonteki, Erdem, İstek, Abdullah
core   +1 more source

Delignification, Yield, Defibreability, and Brightness of Pine Wood (Pinus sylvestris) Pulped Using the Alkaline Sulphite Method with the Addition of DDA and Ethylene Glycol

BioResources
Sodium sulfite (Na2SO3) is known as a selective chemical agent for wood delignification. In this work, Scots pine (Pinus sylvestris) wood was pulped using alkaline sulfite (AS) with the addition of 1,4-dihydro-9,10-dihydroxy anthracene (DDA) [called also
Dariusz Danielewicz
doaj  

Materials produced from plant biomass: part II: evaluation of crystallinity and degradation kinetics of cellulose

Materials Research, 2012
In this study Eucalyptus grandis (CEG) and Pinus taeda (CPT) cellulose fibers obtained from kraft and sulfite pulping process, respectively, were characterized using Fourier transform infrared (FTIR) spectroscopy and thermogravimetry (TGA).
Matheus Poletto, Vinícios Pistor, Ruth Marlene Campomanes Santana, Ademir José Zattera   +3 more
doaj  

Determining the Pulping Conditions and Properties of Unbleached Pulp from Uruguayan Pinus Taeda

Ingeniería
Context: In Uruguay, numerous Pinus taeda plantations are at final-turn age, but they still do not have commercial destination and are exported as green-wood logs.
Viviana Palombo, Leonardo Clavijo, Maria Noel Cabrera   +2 more
doaj   +1 more source

Chemical Characterisation of Compression Wood in Plantation Grown Pinus Radiata [PDF]

, 2007
The primary objective of this study was to find out if changes in chemistry could be used to quantify Pinus radiata compression wood severity or degree of compression wood development.
Nanayakkara, Bernadette
core  

Efeito do teor de lignina da madeira de Eucalyptus globulus Labill. no desempenho da polpação kraft

Ciência Florestal, 2011
In this research, it was analyzed the lignin content effect of Eucalyptus globulus Labill. wood in kraft pulping optimization. Seventy-two laboratory cooking were made with wood chips obtained from six Eucalyptus globulus trees selected from a group of ...
Gabriel Valim Cardoso, Celso Edmundo Bochetti Foelkel, Sonia Maria Bitencourt Frizzo, Claudia Adriana Broglio da Rosa, Teotônio Francisco de Assis, Patrícia de Oliveira   +5 more
doaj  

Caracterização de compostos reduzidos de enxofre gerados na produção de celulose kraft e pré-hidró lise kraft

Ciência Florestal, 2002
An environmental concern in the kraft pulping is the odor caused by the reduced sulphur compounds.There are many simple equipments to detect on-line the total reduced sulphur (TRS), like the coulometric titrator.
Afonso Moura Moraes de, Celso Edmundo Foelkel Bochetti, Sonia Maria Frizzo Bitencourt   +2 more
doaj  

Production of bio-oil from lignin extracted from kraft black liquor by the Sunmembrane process

, 2014
It is essential for the pulp and paper industry to utilize as much of the forest raw material as possible to achieve the sustainability goals and to increase the profit.
Arkell, Anders,, Wallberg, Ola,, Lund University., Stigsson, Lars,   +3 more
core