scholarly journals Cellulose pulp produced from bulrush fiber

2017 ◽  
Vol 47 (5) ◽  
Author(s):  
Vania Karine Dick Wille ◽  
Cristiane Pedrazzi ◽  
Jorge Luiz Colodette ◽  
Rubens Chaves de Oliveira ◽  
Rodrigo Coldebella ◽  
...  
Keyword(s):  
Paper Industry ◽  
Short Fiber ◽  
Kraft Pulping ◽  
Pulp And Paper ◽  
Raw Material ◽  
Wood Fibers ◽  
Material Source ◽  
Pulp Industry ◽  
Cellulose Pulp ◽  
Cellulosic Pulp

ABSTRACT: Brazil continues to use wood as the principal raw material source for the pulp industry; although, non-wood fibers have been revealed to be a competent substitute to produce paper with different and exceptional properties. Keeping this in focus, this study aimed to assess potential of Schoenoplectus californicus fibers (C. A. Mey.) Soják, commonly identified as bulrush or reed, in cellulosic pulp generation, as an alternative fiber source for the pulp and paper industry. On analyzing the chemical composition of reed fibers, extractives of lignin, carbohydrates, uronic acids and minerals were reported. Physico-chemical characteristics of reed-based cellulosic pulp were estimated including viscosity, hexenuronic acids, etc., as well as anatomical features of length, width, etc. From the chemical analyses of the reed the presence of high concentrations of extractives and silica was clear, making them unfit as raw material for cellulosic pulp production. Pulp kraft pulping process produced brown pulps low in viscosity (34.5m Pa.s) and hexenuronic acid content. Reed is thus classifiable as short-fiber source for pulp and paper industries.

Non-wood fibers as raw material for pulp and paper industry

2020 ◽  
Vol 35 (2) ◽  
pp. 215-230 ◽  
Author(s):  
Essam S. Abd El-Sayed ◽  
Mohamed El-Sakhawy ◽  
Mohamed Abdel-Monem El-Sakhawy
Keyword(s):  
Raw Materials ◽  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Raw Material ◽  
Chemical Recovery ◽  
High Tech ◽  
Wood Fibers ◽  
Plant Fibers ◽  
Materials Used

AbstractPulp and paper industry in the world have been growing fast. As a result, there has been a massive request for pulp and paper raw materials. The raw materials used in papermaking can be classified into three groups: wood, non-wood, and recycled wastepaper. The Non-wood raw material is an important fiber resource in the regions where forest resources are limited. The current usage of non-wood plant fibers, as rice straws, corn stalks, cotton stalks, and bagasse would play a chief role in increasing papermaking raw materials. Using of non-wood plant fibers in the paper industry associated with some problems, including collection, transportation, storage and handling, washing, bleaching, papermaking, chemical recovery, supply of raw material and the properties of finished paper. Recently, a high-tech innovation in all the fields of papermaking has made non-wood more reasonable with wood as a raw material for papermaking. Although till now, use of non-wood fibers for pulp and paper manufacture was focused in countries with limited wood supply, it is now showing a growing effort even in countries with acceptable wood source due to environmental concerns. Consequently, the future of non-wood plant fibers as pulping and papermaking raw material looks bright.

scholarly journals Characterization and evaluation of potential impacts in the environment of residual fiber from cellulose

2019 ◽  
Vol 23 ◽  
pp. 7
Author(s):  
Alvaro João Zonta Neto ◽  
Mariana Gomes Oliveira ◽  
Everton Skoronski ◽  
Maurício Vicente Alves
Keyword(s):  
Low Cost ◽  
Paper Industry ◽  
Treatment Plant ◽  
Cellulose Fiber ◽  
Kraft Pulping ◽  
Pulp And Paper ◽  
Final Destination ◽  
Cellulose Pulp ◽  
Reducing Costs ◽  
Final Residue

The search for alternative final destinations for residue from industrial processes is a growing problem. Pulp and paper industries generate large amounts of residue, which are not always reused or do not receive adequate final destination. An alternative is its reuse, using the final disposal of the residue in the soil, for its potential to inactivate part of the chemical compounds, allowing its use as agricultural inputs of low cost. The purpose of this study was to analyze the final residue of the treatment plant of a pulp and paper industry using the kraft pulping method, which allows a high resistance and low lignin cellulose pulp with the advantage of recovering the chemicals used, reducing costs. In order to pre-evaluate this disposal possibility, this study carried out the classification of the waste classifying the hazardousness of the cellulose fiber, and its behavior under solubilization and leaching tests. The results of the analysis showed that the reactivity characteristics and solubilization of substances in water above the maximum permissible value (MPV), characterizing the residue as non-inert and Hazardous Class I due to the presence of S2- releasing H2S in concentrations above than those established by the regulations.

Non-Wood Fiber as an Alternative to Wood Fiber in Chinas Pulp and Paper Industry

Holzforschung ◽  
2001 ◽  
Vol 55 (2) ◽  
pp. 219-224 ◽  
Author(s):  
A. L. Hammett ◽  
Robert L. Youngs ◽  
Xiufang Sun ◽  
Mudit Chandra
Keyword(s):  
Raw Materials ◽  
Paper Industry ◽  
Wood Fiber ◽  
Pulp And Paper Industry ◽  
Agricultural Residues ◽  
Pulp And Paper ◽  
Raw Material ◽  
Chemical Recovery ◽  
Wood Fibers ◽  
Chinese Market

Summary The pulp and paper industry in China has been growing rapidly as the nation's population and economy have grown. As a result, there has been a huge demand for pulp and paper raw materials. China has a long tradition for using non-wood raw materials for pulp and paper due to its limited forest resources and rich supply of agricultural residues and non-wood plants. Agricultural residues, such as rice straw and wheat straw, are traditional raw materials for China's paper industry. Massive plantation of bamboo provides an increasingly important source of raw material for pulp and paper. Problems with non-wood fiber include collection and transportation, storage and handling, washing, bleaching, papermaking, and chemical recovery. Small mills, primary users of non-wood fiber, are typically deficient in pollution control and subject to government closure. This paper reviews non-wood fibers commonly used in China's pulp and paper industry. By increased knowledge of use of non-wood fibers, wood suppliers can plan for access to the growing Chinese market.

Co-cooking nonwoods with hardwoods

TAPPI Journal ◽  
2014 ◽  
Vol 13 (6) ◽  
pp. 19-24
Author(s):  
TROY RUNGE ◽  
CHUNHUI ZHANG
Keyword(s):  
High Performance Liquid Chromatography ◽  
High Performance ◽  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Strength Properties ◽  
Agricultural Residues ◽  
Kraft Pulping ◽  
Pulp And Paper ◽  
Strength Increase ◽  
Xylan Content

Agricultural residues and energy crops are promising resources that can be utilized in the pulp and paper industry. This study examines the potential of co-cooking nonwood materials with hardwoods as means to incorporate nonwood material into a paper furnish. Specifically, miscanthus, switchgrass, and corn stover were substituted for poplar hardwood chips in the amounts of 10 wt %, 20 wt %, and 30 wt %, and the blends were subjected to kraft pulping experiments. The pulps were then bleached with an OD(EP)D sequence and then refined and formed into handsheets to characterize their physical properties. Surprisingly, all three co-cooked pulps showed improved strength properties (up to 35%). Sugar measurement of the pulps by high-performance liquid chromatography suggested that the strength increase correlated with enriched xylan content.

scholarly journals Cellulosic Bioethanol from Industrial Eucalyptus globulus Bark Residues Using Kraft Pulping as a Pretreatment

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2185
Author(s):  
Mariana S. T. Amândio ◽  
Jorge M. S. Rocha ◽  
Luísa S. Serafim ◽  
Ana M. R. B. Xavier
Keyword(s):  
Eucalyptus Globulus ◽  
Paper Industry ◽  
Kraft Pulping ◽  
Pulp And Paper ◽  
High Potential ◽  
Fermentation Performance ◽  
Xylose Consumption ◽  
Industrial Plants ◽  
Cellulosic Sugars ◽  
Separate Hydrolysis And Fermentation

The pulp and paper industry faces an emerging challenge for valorising wastes and side-streams generated according to the biorefinery concept. Eucalyptus globulus bark, an abundant industrial residue in the Portuguese pulp and paper sector, has a high potential to be converted into biobased products instead of being burned. This work aimed to evaluate the ethanol production from E. globulus bark previously submitted to kraft pulping through separate hydrolysis and fermentation (SHF) configuration. Fed-batch enzymatic hydrolysis provided a concentrated hydrolysate with 161.6 g·L−1 of cellulosic sugars. S. cerevisiae and Ethanol Red® strains demonstrated a very good fermentation performance, despite a negligible xylose consumption. S. passalidarum, a yeast known for its capability to consume pentoses, was studied in a simultaneous co-culture with Ethanol Red®. However, bioethanol production was not improved. The best fermentation performance was achieved by Ethanol Red®, which provided a maximum ethanol concentration near 50 g·L−1 and fermentation efficiency of 80%. Concluding, kraft pulp from E. globulus bark showed a high potential to be converted into cellulosic bioethanol, being susceptible to implementing an integrated biorefinery on the pulp and paper industrial plants.

Kraft pulping and bleaching of Eichhornia crassipes (Mart.) Solms (water hyacinth)

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 9243-9264
Author(s):  
Luis Fernando Pintor-Ibarra ◽  
José de Jesús Rivera-Prado ◽  
Sarai Ramos-Vargas ◽  
Teófilo Escoto-García ◽  
Nancy Eloisa Rodríguez-Olalde ◽  
...  
Keyword(s):  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Kraft Pulping ◽  
Kappa Number ◽  
Pulp Yield ◽  
Inorganic Elements ◽  
Wood Fibers ◽  
Pulp Bleaching ◽  
Cellulosic Pulp ◽  
Unbleached Pulp

Eichhornia crassipes (water hyacinth) was pulped by means of a kraft pulping process with reagent loads of 10 and 20% on a dry matter basis to determine yield, rejects, kappa number, and ash. Fiber classification, brightness, opacity, and viscosity were measured in the brown pulp. Bleaching was performed by means of an O1O2D1(PO)D2HD3 sequence. Yield, kappa number, pH, ash, brightness, opacity, and viscosity were evaluated in the bleached pulp. Finally, a microanalysis of inorganic elements was carried out in both the bleached and unbleached pulp ash. The highest kraft pulp yield was 26.4%, with a 10% reagent load at 120 °C and 30 minutes cooking. It was determined that E. crassipes cellulosic pulp contains large amounts of fines. Results of the bleaching sequence indicate low brightness (58.0 %) and low viscosity (6.43 cP). The most abundant inorganic elements in the ash of both bleached and unbleached pulp were Ca, Mg, P, and Si. These results suggest that E. crassipes biomass might complement cellulosic fibers in pulping processes of low yield, such as the wood fibers used to produce handmade paper.

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