scholarly journals Nitrate-Alkaline Pulp from Non-Wood Plants

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3673
Author(s):  
Kateřina Hájková ◽  
Jiří Bouček ◽  
Petr Procházka ◽  
Petr Kalous ◽  
Dominik Budský
Keyword(s):  
Czech Republic ◽  
Chemical Composition ◽  
Camelina Sativa ◽  
Agricultural Residues ◽  
Kappa Number ◽  
Pulp And Paper ◽  
The Czech Republic ◽  
Paper Production ◽  
Breaking Length ◽  
Black Mustard

Because there is a lack of wood resources in many countries, this work focused on pulp and paper production from the waste and agricultural residues of non-wood plants. The work aimed to pulp the nitrate-alkaline of black mustard (Brassica Nigra L.) and camelina (Camelina Sativa L.). The black mustard and the camelina were selected due to the expanding planted areas of these crops in the Czech Republic. To characterize the chemical composition of black mustard and camelina, cellulose, lignin, ash, and extractives were determined. Raw alpha-cellulose, beta-cellulose, and gamma-cellulose were also measured. The results showed that the content of lignin in non-wood plants is lower than that in softwoods. The cooked pulp was characterized by the delignification degree–Kappa number. Additionally, handsheet papers were made for selected samples of pulp. The handsheet papers were characterized by tensile index, breaking length, and smoothness and compared with commonly available papers.

scholarly journals Evaluation of Rhododendron Luteum and Rhododendron Ponticum in Pulp and Paper Production

2020 ◽  
Vol 71 (4) ◽  
pp. 365-370
Author(s):  
Emre Birinci ◽  
Ahmet Tutuş ◽  
Mustafa Çiçekler
Keyword(s):  
Physical Properties ◽  
Kappa Number ◽  
Pulp And Paper ◽  
Raw Material ◽  
Paper Properties ◽  
Paper Production ◽  
Rhododendron Ponticum ◽  
Breaking Length ◽  
Pulp Properties ◽  
Cooking Conditions

In this study, Rhododendron luteum and Rhododendron ponticum were evaluated as raw material for pulp and paper production. 12 different sodium borohydride (NaBH4) added cooking trials were performed for each sample and kraft method was used for pulp production. Pulp properties, such as yield, kappa number and viscosity, and physical properties, such as breaking length and burst index, were determined for each trial. Besides, the effects of active alkali and NaBH4 on the pulp and paper properties were also examined. Optimum cooking conditions were obtained by using 18 % active alkali for NaBH4-free cooking experiments and 0.5 % NaBH4 and 18 % active alkali for NaBH4-added cooking experiments. In NaBH4-added pulping condition, the screened yield, kappa number and viscosity of R. luteum were found to be 43.4 %, 40.1 and 949 cm3/g1, respectively. The respective values for R. ponticum were 41.9 %, 44.5 and 885 cm3/g1. The screened yields of R. luteum and R. ponticum increased by about 2.8 % and 5.3 %, respectively, with 5 % addition of NaBH4 compared to NaBH4-free cooking experiments. Furthermore, with the addition of NaBH4, the kappa numbers decreased while the viscosity increased. The physical properties of the produced papers were also improved by using NaBH4 in cooking liquor. According to the obtained results, it was found that R. luteum and R. ponticum species can be evaluated for pulp and paper production.

scholarly journals Nitrate-Alkaline Pulp From Non-Wood Plants

2021 ◽  
Author(s):  
Kateřina Hájková ◽  
Jiří Bouček ◽  
Petr Procházka ◽  
Petr Kalous ◽  
Dominik Budský
Keyword(s):  
Acetic Acid ◽  
Nitric Acid ◽  
Chemical Analysis ◽  
Sodium Hydroxide ◽  
Camelina Sativa ◽  
Brassica Nigra ◽  
Kappa Number ◽  
Breaking Length ◽  
Black Mustard ◽  
Alpha Beta

To investigate this suitability of Black Mustard (Brassica Nigra L.) and Camelina (Camelina Sativa L.) for pulp manufacturing the nitrate-alkaline method was used. The non-wood plants were characterized by chemical analysis, especially lignin, cellulose, ash, extractives and alpha-, beta-, gamma-cellulose. The pulp was cooked in 6% nitric acid and then underwent the extraction by 5% sodium-hydroxide and neutralized by 1% acetic acid. The cooked pulp was characterized by delignification degree – Kappa number. The laboratory sheets were made from this cooked pulp and they were characterized by tensile index, breaking length, smoothness and compared with commonly available papers.

scholarly journals Chemical Composition and Pulp Properties of Abaca (Musa textilis Née) cv. Inosa Harvested at Different Stages of Stalk Maturity

2012 ◽  
pp. 45-62
Author(s):  
Luz Moreno ◽  
Calixto Protacio
Keyword(s):  
Chemical Properties ◽  
Ash Content ◽  
Pulp And Paper ◽  
Pulp Yield ◽  
Paper Production ◽  
Tear Index ◽  
Global Demand ◽  
Breaking Length ◽  
Pulp Properties

Given the increasing global demand for pulp, there is a need to look into the prospects of increasing fiber production and shortening the harvesting cycle of abaca without sacrificing the quality of fibers for pulp production. This study investigated the chemical and pulp properties of abaca cv. Inosa fibers harvested at different stages of stalk maturity to determine their suitability for pulp and paper production. Fibers obtained from 8-10-month-old (immature) abaca cv. Inosa possessed the desirable chemical properties for pulping, namely; low lignin and ash content, high alpha-cellulose, holocellulose and hemi- cellulose contents; which are comparable with those obtained from intermediate and mature stalks. The average pulp yield, Kappa number, viscosity, tear index and breaking length of pulps from immature stalks were already comparable with those of mature fibers and were even higher than the mature fibers of Linawaan and Laylay cultivars. Fibers of abaca cv. Inosa obtained from immature stalks were thus, found suitable for pulp and paper production.

Potential, Prices and Resources of Raw Wood Assortments for the Pulp and Paper Industry in Central Europe

2016 ◽  
Vol 688 ◽  
pp. 210-217 ◽  
Author(s):  
Miloš Gejdoš ◽  
Jozef Suchomel
Keyword(s):  
Czech Republic ◽  
Central Europe ◽  
Economic Crisis ◽  
Paper Industry ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Raw Material ◽  
Market Conditions ◽  
The Czech Republic ◽  
Price Trends

In the last decade the prices of wood in Slovakia were affected by the global economic crisis, rising intensity and extent of incidental felling and specific market conditions in SR. This paper analyses the shares of selected raw wood assortments supplies for the pulp and paper industry in Slovakia, the Czech Republic, Austria and Germany for the period 2008-2013. We also analyse the price trends of raw-wood assortments of the III.C class spruce, fir and beech saw-logs, pulpwood and firewood in selected countries of Austria, the Czech Republic and Slovakia. The analysed period represented the last 7 years (from 2008 - April 2015). The last part is devoted to evaluation of the potential of these assortments as a source of raw material for pulp and paper industry.

scholarly journals Quality indicators of roe deer (Capreolus capreolus L.) venison from two different Czech regions

2013 ◽  
Vol 82 (2) ◽  
pp. 175-180 ◽  
Author(s):  
Petr Dominik ◽  
Alena Saláková ◽  
Hana Buchtová ◽  
Ladislav Steinhauser
Keyword(s):  
Czech Republic ◽  
Chemical Composition ◽  
Quality Indicators ◽  
Dry Matter ◽  
Agricultural Land ◽  
Roe Deer ◽  
Capreolus Capreolus ◽  
The Czech Republic ◽  
Pure Protein ◽  
South Moravia

This study focused on differences in the monitored quality indicators of roe deer venison depending on the region of the Czech Republic where roe deer are hunted. Quality of roe deer venison was evaluated based on pH values, colour (CIEL*a*b* system) and chemical composition (content of haem pigments, dry matter, pure protein, collagen and fat). Samples of muscle from the leg (m. gluteus medius) were taken from 22 female roe deer (Capreolus capreolus L.) from two hunting regions (Liberec and South Moravia) in the Czech Republic. In roe deer from Liberec, higher pH value (5.65, P < 0.001) was found; muscles were darker (L* = 36.03), contained higher redness (a* = 14.41, P < 0.001) and yellowness values (b* = 12.10) and higher chroma (C* = 18.86). In roe deer from South Moravia, higher (P < 0.05) hue (h°) values, and higher level of haem pigments (2.45 mg·g-1) were found. Muscles from roe deer from South Moravia contained higher amounts of dry matter (29.52%, P < 0.001), pure protein (23.84%, P < 0.001) and total collagen (0.86%), and lower amounts of intramuscular fat (0.48%). These results may provide an important source of information for consumers of roe deer meat because several differences in the quality (chemical composition) of muscles from South Moravian region and Liberec region were found. Presumably, the differences between muscles from animals living in two different Czech regions were due to the diet, form of land use (more agricultural land in Southern Moravia, and forests and mountains in Liberec) and climatic conditions (Liberec lies in the northern part of the Czech Republic). It is the first study of this topic in the Czech Republic.

scholarly journals Soda-AQ pulping of Paulownia wood after hydrolysis treatment

BioResources ◽  
2011 ◽  
Vol 6 (2) ◽  
pp. 971-986
Author(s):  
Juan Carlos García ◽  
Minerva A. M. Zamudio ◽  
Antonio Pérez ◽  
Manuel Javier Feria ◽  
José Lívio Gomide ◽  
...  
Keyword(s):  
Solid Phase ◽  
Cellulose Degradation ◽  
Kappa Number ◽  
Pulp And Paper ◽  
Raw Material ◽  
Similar Process ◽  
Paper Production ◽  
Paulownia Fortunei ◽  
Cellulosic Pulp ◽  
Paulownia Wood

A trihybrid clone of Paulownia fortunei x tormentosa x elongata was used for pulp and paper production using the soda-anthraquinone (AQ) process, comparing the results with those from Paulownia fortunei. An autohydrolysis process had been previously carried out on this raw material. A composite central experimental design and a multiple regression were used for modeling and optimizing the process. A valuable liquid phase could be obtained from the autohydrolysis process of Paulownia, trying to minimize cellulose degradation for pulp and paper production. A compromise to maximize the glucan and minimize the xylan contents in the postautohydrolysis solid phase could be achieved at 187.5ºC and 15 minutes. A suitable cellulosic pulp with kappa number ranging from 12.2 to 69.2 and ISO brightness from 18.2 to 30.6% presented better results than those from other studies. Regarding handsheets physical properties (tensile index 37.3 N·m/g ) and viscosity (848 cm3/g), significant improvements could be obtained when compared with previous results of a similar process using Paulownia fortunei or Paulownia elongata.

Evaluation of different agricultural residues as raw materials for pulp and paper production using a semichemical process

2017 ◽  
Vol 156 ◽  
pp. 184-193 ◽  
Author(s):  
A. Gonzalo ◽  
F. Bimbela ◽  
J.L. Sánchez ◽  
J. Labidi ◽  
F. Marín ◽  
...  
Keyword(s):  
Raw Materials ◽  
Agricultural Residues ◽  
Pulp And Paper ◽  
Paper Production

scholarly journals WOOD QUALITY OF Pinus patula Schltdl & Cham FOR THE PULP PRODUCTION

2019 ◽  
Vol 43 (2) ◽  
Author(s):  
Karina Soares Modes ◽  
Raquel Lúcia Ludwig ◽  
Magnos Alan Vivian ◽  
Joni Stolberg
Keyword(s):  
Chemical Composition ◽  
Wood Quality ◽  
Basic Density ◽  
Morphological Characteristics ◽  
Pulp And Paper ◽  
Raw Material ◽  
Pinus Patula ◽  
Traditional Use ◽  
Paper Production

ABSTRACT The softwood pulp industry is based on the supply of Pinus taeda and P. elliottii woods, and competes for this raw material with other timber sectors. The study aimed to evaluate the wood quality of Pinus patula for pulp and paper production. Trees aged 14 years were obtained from a plantation located in Ponte Alta do Norte, State of Santa Catarina/Brazil. Discs were collected along the commercial height for determining the weighted basic density and its longitudinal variation in the trees, and the chemical composition. For the anatomical characterization, a disc was extracted from the base of each tree to determine the radial variation of tracheids morphological characteristics, and their quality indexes for the production of kraft pulp. The weighted basic density (365 kg.m-3) of the wood was low when compared with other species of the same genus. Regarding the tracheids morphology, a mean length of 2.37 mm; wall thickness of 5.49 µm; width of 40.32 µm and a lumen diameter of 29.09 µm were observed. The chemical composition of the species showed low contents of lignin (25.06%) and ashes (0.27%), compatible content of holocellulose (70.76%), and high content of extractives (6.24%) compared with conifers of traditional use. In general, P. patula species shows characteristics compatible with those traditionally used for the pulp and paper production, and it should be considered in more advanced studies with this species in this segment.

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