scholarly journals Computational Simulation Tools to Support the Tissue Paper Furnish Management: Case Studies for the Optimization of Micro/Nano Cellulose Fibers and Polymer-Based Additives

Polymers ◽  
2021 ◽  
Vol 13 (22) ◽  
pp. 3982
Author(s):  
Flávia P. Morais ◽  
Ana M. M. S. Carta ◽  
Maria E. Amaral ◽  
Joana M. R. Curto
Keyword(s):  
Case Studies ◽  
Raw Materials ◽  
Computational Simulation ◽  
Cellulose Fibers ◽  
Paper Properties ◽  
Fiber Modification ◽  
Simulation Tools ◽  
Tissue Paper ◽  
Nano Cellulose ◽  
End Use

Tissue paper production frequently combines two main types of raw materials: cellulose fibers from renewable sources and polymer-based additives. The development of premium products with improved properties and functionalities depends on the optimization of both. This work focused on the combination of innovative experimental and computational strategies to optimize furnish. The main goal was to improve the functional properties of the most suitable raw materials for tissue materials and develop new differentiating products with innovative features. The experimental plan included as inputs different fiber mixtures, micro/nano fibrillated cellulose, and biopolymer additives, and enzymatic and mechanical process operations. We present an innovative tissue paper simulator, the SimTissue, that we have developed, to establish the correlations between the tissue paper process inputs and the end-use paper properties. Case studies with industrial interest are presented in which the tissue simulator was used to design tissue paper materials with different fiber mixtures, fiber modification treatments, micro/nano fibrillated cellulose, and biopolymer formulations, and to estimate tissue softness, strength, and absorption properties. The SimTissue was able to predict and optimize a broader range of formulations containing micro/nanocellulose fibers, biopolymer additives, and treated-fiber mixtures, saving laboratory and industrial resources.

Deinking of recycled paper by coupling of the enzyme endo-β-1,4-D-glucanasa and the cellulose, and by using a laboratory flotation column

MRS Advances ◽  
2020 ◽  
Vol 5 (52-53) ◽  
pp. 2669-2678
Author(s):  
Jeovani González P. ◽  
Ramiro Escudero G
Keyword(s):  
Amino Acids ◽  
Sodium Hydroxide ◽  
Paper Industry ◽  
Computational Simulation ◽  
Cellulose Fibers ◽  
Residual Water ◽  
Chemical Reagent ◽  
Recycled Paper ◽  
Flotation Column ◽  
Hydrolysis Of

AbstractDeinking of recycled office (MOW) paper was carried out by using a flotation column and adding separately sodium hydroxide, and the enzyme Cellulase Thricodema Sp., as defibrillators.The de-inked cellulose fibers were characterized according to the standards of the paper industry, to compare the efficiency of the deinking of each chemical reagent used to hydrolyze the fibers and defibrillate them.The computational simulation of the molecular coupling between the enzyme and cellulose was performed, to establish the enzyme-cellulose molecular complex and then to identify the principal amino-acids of endo-β-1,4-D-glucanase in this molecular link, which are responsible for the hydrolysis of the cellulose.Experimental results show the feasibility to replace sodium hydroxide with the enzyme Cellulase Thricodema Sp., by obtaining deinked cellulose with similar optical and physical properties.The use of the enzyme instead of sodium hydroxide avoids the contamination of the residual water; in addition to that, the column is operated more easily, taking into consideration that the pH of the system goes from alkaline to neutral.

scholarly journals Potential Benefits and Constraints of Development of Critical Raw Materials’ Production in the EU: Analysis of Selected Case Studies

Resources ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 67
Author(s):  
Katarzyna Guzik ◽  
Krzysztof Galos ◽  
Alicja Kot-Niewiadomska ◽  
Toni Eerola ◽  
Pasi Eilu ◽  
...  
Keyword(s):  
Case Studies ◽  
Social Acceptance ◽  
Raw Materials ◽  
Local Level ◽  
Ore Deposits ◽  
Abandoned Mines ◽  
Social Constraints ◽  
Cost And Benefit Analysis ◽  
The Eu ◽  
Critical Raw Materials

Major benefits and constraints related to mineral extraction within the EU have been identified on the examples of selected critical raw materials’ deposits. Analyzed case studies include the following ore deposits: Myszków Mo-W-Cu (Poland), Juomasuo Au-Co (Finland), S. Pedro das Águias W-Sn (Portugal), Penouta Nb-Ta-Sn (Spain), Norra Kärr REEs (Sweden) and Trælen graphite (Norway). They represent different stages of development, from the early/grassroot exploration stage, through advanced exploration and active mining, up to reopening of abandoned mines, and refer to different problems and constraints related to the possibility of exploitation commencement. The multi-criteria analysis of the cases has included geological and economic factors as well as environmental, land use, social acceptance and infrastructure factors. These factors, in terms of cost and benefit analysis, have been considered at three levels: local, country and EU levels. The analyzed cases indicated the major obstacles that occur in different stages of deposit development and need to be overcome in order to enable a new deposit exploitation commencement. These are environmental (Juomasuo and Myszków), spatial (Juomasuo) as well as social constraints (Norra Kärr, Juomasuo). In the analyzed cases, the most important constraints related to future deposit extraction occur primarily at a local level, while some important benefits are identified mainly at the country and the EU levels. These major benefits are related to securing long-term supplies for the national industries and strategically important EU industry sectors.

Identifying Juncus plant as viable source for the production of micro- and nano-cellulose fibers: Application for PVA composite materials development

2020 ◽  
Vol 144 ◽  
pp. 112035 ◽  
Author(s):  
Zineb Kassab ◽  
Said Mansouri ◽  
Youssef Tamraoui ◽  
Houssine Sehaqui ◽  
Hassan Hannache ◽  
...  
Keyword(s):  
Composite Materials ◽  
Cellulose Fibers ◽  
Materials Development ◽  
Nano Cellulose

A review on the current developments in continuous lactic acid fermentations and case studies utilising inexpensive raw materials

2019 ◽  
Vol 79 ◽  
pp. 1-10 ◽  
Author(s):  
José Pablo López-Gómez ◽  
Maria Alexandri ◽  
Roland Schneider ◽  
Joachim Venus
Keyword(s):  
Lactic Acid ◽  
Case Studies ◽  
Raw Materials

scholarly journals Selected Grass Plants as Biomass Fuels and Raw Materials for Papermaking, Part II. Pulp and Paper Properties

BioResources ◽  
2015 ◽  
Vol 10 (4) ◽  
Author(s):  
Dariusz Danielewicz ◽  
Barbara Surma-Ślusarska ◽  
Grzegorz Żurek ◽  
Danuta Martyniak ◽  
Magdalena Kmiotek ◽  
...  
Keyword(s):  
Raw Materials ◽  
Pulp And Paper ◽  
Biomass Fuels ◽  
Paper Properties

scholarly journals A market-oriented database design for critical material research

2021 ◽  
Vol 1 (1) ◽  
pp. 34-49
Author(s):  
Ruby T. Nguyen ◽  
◽  
Ange-Lionel Toba ◽  
Michael H. Severson ◽  
Ethan M. Woodbury ◽  
...  
Keyword(s):  
Supply Chain ◽  
Raw Materials ◽  
Raw Material ◽  
Easy Access ◽  
Material Research ◽  
Supply Chain Risk ◽  
Quality Of Data ◽  
Critical Material ◽  
Market Focus ◽  
End Use

<abstract> <p>Material databases are important tools to provide and store information from material research. Rising concerns about supply-chain risks to raw materials presents a need to incorporate raw-material market and end-use application data, beyond basic chemical and physical properties, into a material database. One key challenge for researchers working on critical materials is information scarcity and inconsistency. This paper introduces, as a result of a two-year project, a critical-material commodity database (CMCD) incorporated with a low-code web-based platform that allows easy access for users and simple updates for the authors. The main goal of this project was to educate material scientists on the applications having the most impact on the supply chain and current industrial specifications/markets for each application. The objective was to provide material researchers with harmonized information so that they could gain a better understanding of the market, focus their technologies on an application with a high potential for commercialization, and better contribute to supply-chain risk reduction. While the goal was met with high receptivity, several limitations stemmed from query design, distribution platform, and quality of data source. To overcome some of these limitations and expand on CMCD's potential, we are building a public webpage with an improved interface, better data organization, and higher extensibility.</p> </abstract>

scholarly journals Mechanical, physical and tribological characterization of nano-cellulose fibers reinforced bio-epoxy composites: An attempt to fabricate and scale the ‘Green’ composite

2016 ◽  
Vol 147 ◽  
pp. 282-293 ◽  
Author(s):  
Bamdad Barari ◽  
Emad Omrani ◽  
Afsaneh Dorri Moghadam ◽  
Pradeep L. Menezes ◽  
Krishna M. Pillai ◽  
...  
Keyword(s):  
Cellulose Fibers ◽  
Epoxy Composites ◽  
Green Composite ◽  
Nano Cellulose ◽  
Tribological Characterization
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