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Articles de revues sur le sujet « MICRO CELLULOSE PRODUCTION »

Auteur : Grafiati

Publié le 11 septembre 2023

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1

Michael Jacob Ioelovich. "Microcellulose Vs Nanocellulose – A Review." World Journal of Advanced Engineering Technology and Sciences 5, no. 2 (2022): 001–15. http://dx.doi.org/10.30574/wjaets.2022.5.2.0037.

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Cellulose is the most abundant and renewable natural semi-crystalline polysaccharide. This biopolymer is an inexhaustible source of natural fibers (NFs), and valuable raw material for the production of microparticles of microcrystalline (MCC) and powdered cellulose (PC), as well as other cellulose micro-products, which are widely used in biomedicine, production of food additives, plastics, and other materials. In addition, cellulose has a nano-fibrillar architecture that promotes the release of free cellulose nanofibers (CNFs) and nanocrystals (CNCs). This review article describes the preparat

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Jedvert, Kerstin, and Thomas Heinze. "Cellulose modification and shaping – a review." Journal of Polymer Engineering 37, no. 9 (2017): 845–60. http://dx.doi.org/10.1515/polyeng-2016-0272.

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Abstract This review aims to present cellulose as a versatile resource for the production of a variety of materials, other than pulp and paper. These products include fibers, nonwovens, films, composites, and novel derivatized materials. This article will briefly introduce the structure of cellulose and some common cellulose derivatives, as well as the formation of cellulosic materials in the micro- and nanoscale range. The challenge with dissolution of cellulose will be discussed and both derivatizing and nonderivatizing solvents for cellulose will be described. The focus of the article is th

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Correia, Viviane Costa, Sergio Francisco Santos, Holmer Savastano Jr, and Vanderley Moacyr John. "Utilization of vegetable fibers for production of reinforced cementitious materials." RILEM Technical Letters 2 (April 4, 2018): 145–54. http://dx.doi.org/10.21809/rilemtechlett.2017.48.

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Vegetable fibers produced from agroindustrial resources in the macro, micro and nanometric scales have been used as reinforcement in cementitious materials. The cellulosic pulp, besides being used as the reinforcing element, is also the processing fiber that is responsible for the filtration system in the Hatcheck method. On the other hand, the nanofibrillated cellulose has the advantage of having good mechanical performance and high specific surface, which contributes to improve the adhesion between fiber and matrix. In the hybrid reinforcement, with micro and nanofibers, the cellulose perfor

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Kmetty, Á., J. Karger-Kocsis, and T. Czigány. "Production and properties of micro-cellulose reinforced thermoplastic starch." IOP Conference Series: Materials Science and Engineering 74 (February 17, 2015): 012008. http://dx.doi.org/10.1088/1757-899x/74/1/012008.

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Ansharullah, Ansharullah, Nur Muhammad Abdillah Saenuddin, RH Fitri Faradilla, Asranuddin Asranudin, Asniar Asniar, and Muhammad Nurdin. "Production of Micro Crystalline Cellulose from Tapioca Solid Waste: Effect of Acid Concentration on its Physico-chemical Properties." Jurnal Kimia Sains dan Aplikasi 23, no. 5 (2020): 147–51. http://dx.doi.org/10.14710/jksa.23.5.147-151.

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This study was aimed to examine the production of microcrystalline cellulose (MCC) from tapioca solid waste (TSW), using HCl hydrolysis with various concentrations, i.e., 2 N, 2.5 N, 3 N, and 3.5 N. MCC was produced by delignifying the TSW with NaOH 20%, and bleaching with NaOCl 3.5% to produce α-cellulose, and subsequently hydrolyzing α-cellulose with three different HCl concentrations to produce MCC. The physicochemical properties of MCC were then analyzed, including Scanning Electron Micrograph (SEM), X-ray diffraction (XRD), and FTIR spectra. The results showed that hydrolysis with 2.0 N H

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Krindges, Aline, Vanusca Dalosto Jahno, and Fernando Morisso. "Incorporation of micro/nanoparticles of PCL with essential oil of Cymbopogon nardus in bacterial cellulose." International Journal of Advances in Medical Biotechnology - IJAMB 1, no. 2 (2018): 37. http://dx.doi.org/10.25061/2595-3931/ijamb/2018.v1i2.18.

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Incorporation studies of particles in different substrates with herbal assets growing. The objective of this work was the preparation and characterization of micro/nanoparticles containing cymbopogon nardus essential oil; and the incorporation of them on bacterial cellulose. For the development of the membranes was used the static culture medium and for the preparation of micro/nanoparticles was used the nanoprecipitation methodology. The incorporation of micro/nanoparticles was performed on samples of bacterial cellulose in wet and dry form. For the characterization of micro/nanoparticles wer

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Armaini, Abdi Dharma, Sumaryati Syukur, and Jamsari. "OPTIMASI NUTRISI MEDIA PERTUMBUHAN BAKTERI TERMOFIL PENGHASIL SELULASE DARI SUMBER AIR PANAS RIMBO PANTI." Jurnal Riset Kimia 5, no. 1 (2015): 1. http://dx.doi.org/10.25077/jrk.v5i1.165.

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Optimization have been done on the media for the growth of the isolated thermophiles bacteria from hot springs Rimbo Panti, the nutrients comprising variety of carbon sources such as CMC (carboxymethyl cellulose), avicell (micro crystalline cellulose), and cellobiose, with a variety of sources organic nitrogen, peptone, extracts yeast, tryptone, and urea, as well as variations consist of inorganic nitrogen sources, KNO3, NaNO3, (NH4)2SO4, and (NH4)NO3. Determination of cellulase activity performed using DNS reagent (3,5-dinitro salicylic acid). Maximum cellulase production with high activity b

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Stepanova, Mariia, and Evgenia Korzhikova-Vlakh. "Modification of Cellulose Micro- and Nanomaterials to Improve Properties of Aliphatic Polyesters/Cellulose Composites: A Review." Polymers 14, no. 7 (2022): 1477. http://dx.doi.org/10.3390/polym14071477.

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Aliphatic polyesters/cellulose composites have attracted a lot attention due to the perspectives of their application in biomedicine and the production of disposable materials, food packaging, etc. Both aliphatic polyesters and cellulose are biocompatible and biodegradable polymers, which makes them highly promising for the production of “green” composite materials. However, the main challenge in obtaining composites with favorable properties is the poor compatibility of these polymers. Unlike cellulose, which is very hydrophilic, aliphatic polyesters exhibit strong hydrophobic properties. In

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Weerasinghe, Weerasinghe Mudiyanselage Lakshika Iroshani, Dampe Acharige Tharindu Madusanka, and Pathmalal Marakkale Manage. "Isolation and Identification of Cellulase Producing and Sugar Fermenting Bacteria for Second-Generation Bioethanol Production." International Journal of Renewable Energy Development 10, no. 4 (2021): 699–711. http://dx.doi.org/10.14710/ijred.2021.35527.

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Over the last decades, the negative impacts of fossil fuel on the environment and increasing demand for energy due to the unavoidable depletion of fossil fuels, has transformed the world’s interests towards alternative fuels. In particular, bioethanol production from cellulosic biomass for the transportation sector has been incrementing since the last decade. The bacterial pathway for bioethanol production is a relatively novel concept and the present study focused on the isolation of potential “cellulase-producing” bacteria from cow dung, compost soil, and termite gut and isolating sugar ferm

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Magalhães, Marta I., and Ana P. C. Almeida. "Nature-Inspired Cellulose-Based Active Materials: From 2D to 4D." Applied Biosciences 2, no. 1 (2023): 94–114. http://dx.doi.org/10.3390/applbiosci2010009.

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Multifunctional materials and devices with captivating properties can be assembled from cellulose and cellulose-based composite materials combining functionality with structural performance. Cellulose is one of the most abundant renewable materials with captivating properties, such as mechanical robustness, biocompatibility, and biodegradability. Cellulose is a low-cost and abundant biodegradable resource, CO2 neutral, with a wide variety of fibers available all over the world. Over thousands of years, nature has perfected cellulose-based materials according to their needs, such as function vs

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Khalil, H. P. S. Abdul, Fauziah Jummaat, Esam Bashir Yahya, et al. "A Review on Micro- to Nanocellulose Biopolymer Scaffold Forming for Tissue Engineering Applications." Polymers 12, no. 9 (2020): 2043. http://dx.doi.org/10.3390/polym12092043.

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Biopolymers have been used as a replacement material for synthetic polymers in scaffold forming due to its biocompatibility and nontoxic properties. Production of scaffold for tissue repair is a major part of tissue engineering. Tissue engineering techniques for scaffold forming with cellulose-based material is at the forefront of present-day research. Micro- and nanocellulose-based materials are at the forefront of scientific development in the areas of biomedical engineering. Cellulose in scaffold forming has attracted a lot of attention because of its availability and toxicity properties. T

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Ishizu, Y., K. Kaneki, and K. Izawa. "Smoke Production from Cell Wall Materials of Tobacco Leaves." Beiträge zur Tabakforschung International/Contributions to Tobacco Research 15, no. 1 (1991): 1–10. http://dx.doi.org/10.2478/cttr-2013-0616.

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AbstractMajor components of cell wall materials, that is a-cellulose, hemicellulose, pectin and lignin, were isolated from tobacco leaves. They were heated in a micro-thermobalance in different atmospheres and at different heating rates. The weight loss rate of the sample materials, production rates of carbon oxides and smoke particles produced were measured. In general, materials which produce more carbon oxides produce less smoke particulate mass. In helium at a heating rate of 240°C/min, which attempts to approximate the burning conditions of a cigarette, weight ratios of smoke particles to

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Patel, Dinesh K., Yu-Ri Seo, Sayan Deb Dutta та Ki-Taek Lim. "Enhanced osteogenesis of mesenchymal stem cells on electrospun cellulose nanocrystals/poly(ε-caprolactone) nanofibers on graphene oxide substrates". RSC Advances 9, № 62 (2019): 36040–49. http://dx.doi.org/10.1039/c9ra06260b.

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Algellay, Marwan, Matthew Roberts, Lucy Bosworth, Satyajit D. Sarker, Amos A. Fatokun, and Touraj Ehtezazi. "The Use of Micro-Ribbons and Micro-Fibres in the Formulation of 3D Printed Fast Dissolving Oral Films." Pharmaceuticals 16, no. 1 (2023): 79. http://dx.doi.org/10.3390/ph16010079.

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Three-dimensional printing (3DP) allows production of novel fast dissolving oral films (FDFs). However, mechanical properties of the films may not be desirable when certain excipients are used. This work investigated whether adding chitosan micro-ribbons or cellulose microfibres will achieve desired FDFs by fused deposition modelling 3DP. Filaments containing polyvinyl alcohol (PVA) and paracetamol as model drug were manufactured at 170 °C. At 130 °C, filaments containing polyvinylpyrrolidone (PVP) and paracetamol were also created. FDFs were printed with plain or mesh patterns at temperatures

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Ibarra, David, Raquel Martín-Sampedro, Bernd Wicklein, Úrsula Fillat, and María E. Eugenio. "Production of Microfibrillated Cellulose from Fast-Growing Poplar and Olive Tree Pruning by Physical Pretreatment." Applied Sciences 11, no. 14 (2021): 6445. http://dx.doi.org/10.3390/app11146445.

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Motivated by the negative impact of fossil fuel consumption on the environment, the need arises to produce materials and energy from renewable sources. Cellulose, the main biopolymer on Earth, plays a key role in this context, serving as a platform for the development of biofuels, chemicals and novel materials. Among the latter, micro- and nanocellulose have been receiving increasing attention in the last few years. Their many attractive properties, i.e., thermal stability, high mechanical resistance, barrier properties, lightweight, optical transparency and ease of chemical modification, allo

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Zhang, Zhi Ping, Quan Guo Zhang, Yi Wang, and Jian Zhi Yue. "Study of Hydrogen Producing Capacity and Micro-Structure of the Crop Stalks after Ball Milling." Advanced Materials Research 347-353 (October 2011): 2697–704. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.2697.

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Utilized the reducing sugar amount and cumulative hydrogen production that produced by the enzymolysis of the biomass crushed by the ball mill as reference, the experiments on the relationship between different sort of raw material and different reducing sugar yield show that the corncob reducing sugar yield and cumulative hydrogen production uptake after enzymolysis is highest, reaching 1088mL.Observed the microstructure of the crushing cornstalk and corncob with canning electron microscope and X-ray diffraction, the analysis results showed that: after ball mill crushing, biomass cell wall wa

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Karagiannidis, Emmanouil, Charles Markessini, and Eleftheria Athanassiadou. "Micro-Fibrillated Cellulose in Adhesive Systems for the Production of Wood-Based Panels." Molecules 25, no. 20 (2020): 4846. http://dx.doi.org/10.3390/molecules25204846.

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Micro-Fibrillated Cellulose (MFC) is a new type of bio-based additive, coming from wood cellulose. It can compete and substitute oil derived chemicals in several application fields. In the present work, the use of micro-fibrillated cellulose, in waterborne adhesive systems applied in the manufacture of composite wood-based panels was evaluated. Research was conducted to test the potential of improving the performance of wood-based panel types such as particleboard, waferboard or randomly-oriented strand board and plywood, by the application of MFC and the substitution of conventional and non-r

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Tozluoglu, Ayhan, Bayram Poyraz, and Zeki Candan. "Examining the efficiency of mechanic/enzymatic pretreatments in micro/nanofibrillated cellulose production." Maderas. Ciencia y tecnología, ahead (2018): 0. http://dx.doi.org/10.4067/s0718-221x2018005001601.

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Tyshkunova, Irina V., Daria N. Poshina, and Yury A. Skorik. "Cellulose Cryogels as Promising Materials for Biomedical Applications." International Journal of Molecular Sciences 23, no. 4 (2022): 2037. http://dx.doi.org/10.3390/ijms23042037.

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The availability, biocompatibility, non-toxicity, and ease of chemical modification make cellulose a promising natural polymer for the production of biomedical materials. Cryogelation is a relatively new and straightforward technique for producing porous light and super-macroporous cellulose materials. The production stages include dissolution of cellulose in an appropriate solvent, regeneration (coagulation) from the solution, removal of the excessive solvent, and then freezing. Subsequent freeze-drying preserves the micro- and nanostructures of the material formed during the regeneration and

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Sjöstrand, Björn, Christophe Barbier, Henrik Ullsten, and Lars Nilsson. "Dewatering of softwood kraft pulp with additives of microfibrillated cellulose and dialcohol cellulose." BioResources 14, no. 3 (2019): 6370–83. http://dx.doi.org/10.15376/biores.14.3.6370-6383.

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The addition of nano- and micro-fibrillated cellulose to conventional softwood Kraft pulps can enhance the product performance by increasing the strength properties and enabling the use of less raw material for a given product performance. However, dewatering is a major problem when implementing these materials to conventional paper grades because of their high water retention capacity. This study investigated how vacuum dewatering is affected by different types of additives. The hypothesis was that different types of pulp additions behave differently during a process like vacuum suction, even

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Betlej, Izabela, Katarzyna Rybak, Małgorzata Nowacka, et al. "Structural Properties of Bacterial Cellulose Film Obtained on a Substrate Containing Sweet Potato Waste." Crystals 12, no. 9 (2022): 1191. http://dx.doi.org/10.3390/cryst12091191.

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The paper presents the results of research on the microstructure of bacterial cellulose (BC-SP) obtained on a medium containing sweet potato peel, which was compared to cellulose obtained on a synthetic medium containing sucrose and peptone (BC-N). The properties of cellulose were analyzed using the methods: size exclusion chromatography (SEC), X-ray diffraction (XRD), scanning electron microscope (SEM), and computer microtomograph (X-ray micro-CT). BC-SP was characterized by a higher degree of polymerization (5680) and a lower porosity (1.45%) than BC-N (4879, 3.27%). These properties give gr

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Mabhegedhe, Munamato. "Cellulolytic Activities of the Dung Beetle, Euoniticellus Intermedius, Larva Gut Micro-Flora." Open Biotechnology Journal 11, no. 1 (2017): 105–13. http://dx.doi.org/10.2174/1874070701711010105.

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Background:The life style and biology of dung beetles offer a significant opportunity for innovation in biofuel production. The larvae of the African dung beetle,Euoniticellus intermedius, feed solely on cow dung, eating and digesting the fibre while adults live on juices found in fresh dung. The larval gut system consists of a small, almost unrecognizable foregut and two distinct chambers; the midgut and hindgut. It is clear that these two chambers are the centres in which the dung material whose composition includes cellulose is processed. The goal of this study was to assess the cellulolyti

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Yurid, F., A. S. Handayani, F. D. Maturbongs, et al. "Production of nanocellulose using controlled acid hydrolysis from large-scale production of micro-fibrillated cellulose derived from oil palm empty fruit bunches." IOP Conference Series: Earth and Environmental Science 1201, no. 1 (2023): 012078. http://dx.doi.org/10.1088/1755-1315/1201/1/012078.

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Abstract Nanocellulose is generally known as a versatile material, which is suitable for various applications due to its unique physicochemical properties, including light weight, ease of tunable surface functionalization, and excellent mechanical properties. This research aims to characterize and synthesize nanocellulose produced from acid hydrolysis of large-scaled micro-fibrillated cellulose (MFC) derived from oil palm empty fruit bunches by varying concentrations of H2SO4 from 20 to 35 v/v %. The obtained large-scaled MFC had a density of 1.01 kg/m3 and was dominantly composed of 71% cellu

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Zeleke, Nehemiah Mengistu, Devendra Kumar Sinha, and Getinet Asrat Mengesha. "Chemical Composition and Extraction of Micro Crystalline Cellulose from Outer Skin Isolated Coffee Husk." Advances in Materials Science and Engineering 2022 (December 13, 2022): 1–13. http://dx.doi.org/10.1155/2022/7163359.

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Coffee husk (CH) is a sustainable and abundantly available cellulosic waste material. Its fiber consists of cellulose as the major structural part which leads to potential utilization for the manufacturing of microcrystalline cellulose (MCC) products that can be utilized for different industrial applications. In the present study, chemical composition of outer skin-isolated coffee husk was determined and sequential treatments of various untreated (UT) sample, ethanol—toluene treated sample through dewaxed (DW) treatment, sodium hydroxide (NaOH)—treated sample through alkali (AT) treatment, and

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Morais, Flávia P., Ana M. M. S. Carta, Maria E. Amaral, and Joana M. R. Curto. "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 13, no. 22 (2021): 3982. http://dx.doi.org/10.3390/polym13223982.

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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 dif

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Fouad, H., Lau Kia Kian, Mohammad Jawaid, Majed D. Alotaibi, Othman Y. Alothman, and Mohamed Hashem. "Characterization of Microcrystalline Cellulose Isolated from Conocarpus Fiber." Polymers 12, no. 12 (2020): 2926. http://dx.doi.org/10.3390/polym12122926.

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Conocarpus fiber is an abundantly available and sustainable cellulosic biomass. With its richness in cellulose content, it is potentially used for manufacturing microcrystalline cellulose (MCC), a cellulose derivative product with versatile industrial applications. In this work, different samples of bleached fiber (CPBLH), alkali-treated fiber (CPAKL), and acid-treated fiber (CPMCC) were produced from Conocarpus through integrated chemical process of bleaching, alkaline cooking, and acid hydrolysis, respectively. Characterizations of samples were carried out with Scanning Electron Microscope (

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Rajnish, K. Narayanan, Melvin S. Samuel, Ashwini John J, et al. "Immobilization of cellulase enzymes on nano and micro-materials for breakdown of cellulose for biofuel production-a narrative review." International Journal of Biological Macromolecules 182 (July 2021): 1793–802. http://dx.doi.org/10.1016/j.ijbiomac.2021.05.176.

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Wang, Wei, Yancai Cao, Liyue Sun, and Mingshuai Wu. "Effect of Temperature on Formaldehyde Diffusion in Cellulose Amorphous Region: A Simulation Study." BioResources 16, no. 2 (2021): 3200–3213. http://dx.doi.org/10.15376/biores.16.2.3200-3213.

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A formaldehyde-cellulose amorphous region model at the micro-level was established using the molecular dynamics software Materials Studio to simulate the change of cellulose and formaldehyde molecules in an external temperature field. The diffusion coefficients of formaldehyde molecules increased as the temperature increased. Moreover, the total number of hydrogen bonds decreased, and the interaction energy in the formaldehyde-cellulose model was reduced, which confirmed this conclusion and indicated that temperature increase could enhance the diffusion of formaldehyde in cellulose. The mechan

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Brilian, Albertus, Veasna Soum, Sooyong Park, et al. "A Simple Route of Printing Explosive Crystalized Micro-Patterns by Using Direct Ink Writing." Micromachines 12, no. 2 (2021): 105. http://dx.doi.org/10.3390/mi12020105.

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The production of energetic crystalized micro-patterns by using one-step printing has become a recent trend in energetic materials engineering. We report a direct ink writing (DIW) approach in which micro-scale energetic composites composed of 1,3,5-trinitro-1,3,5-triazinane (RDX) crystals in selected ink formulations of a cellulose acetate butyrate (CAB) matrix are produced based on a direct phase transformation from organic, solvent-based, all-liquid ink. Using the formulated RDX ink and the DIW method, we printed crystalized RDX micro-patterns of various sizes and shapes on silicon wafers.

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Aguado, Roberto, Quim Tarrés, Maria Àngels Pèlach, et al. "Micro- and Nanofibrillated Cellulose from Annual Plant-Sourced Fibers: Comparison between Enzymatic Hydrolysis and Mechanical Refining." Nanomaterials 12, no. 9 (2022): 1612. http://dx.doi.org/10.3390/nano12091612.

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The current trends in micro-/nanofibers offer a new and unmissable chance for the recovery of cellulose from non-woody crops. This work assesses a technically feasible approach for the production of micro- and nanofibrillated cellulose (MNFC) from jute, sisal and hemp, involving refining and enzymatic hydrolysis as pretreatments. Regarding the latter, only slight enhancements of nanofibrillation, transparency and specific surface area were recorded when increasing the dose of endoglucanases from 80 to 240 mg/kg. This supports the idea that highly ordered cellulose structures near the fiber wal

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Guo, Qian, Yuan Hong Xie, Hong Xing Zhang, Hui Liu, Zheng Xing Lian, and Bao Hua Kong. "Isolation and Partial Function Analysis of Bacillus coagulans L-g6." Advanced Materials Research 1092-1093 (March 2015): 1543–46. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.1543.

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A bacterium strain named L-g6 isolated from kitchen garbage, through 16s rRNA sequencing and Biolog GEN III MicroPlate analyzes, was identified asBacillus coagulans. In the present study, the optimal growth conditions ofB.coagulansL-g6 was at 45°C, pH 7 and in the growth of 6 h reached the end of logarithmic phase.B.coagulansL-g6 can break down cellulose, starch, protein, fat; and the best decomposition effect is protein, followed by starch and cellulose, less fat. In total,B.coagulansL-g6 can be used as a starter production scale degradation of kitchen waste. The research will contribute to t

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Agic, Rukie, Mariјa Zdravkovska, Gordana Popsimonova, Daniela Dimovska, Zvezda Bogevska, and Margarita Davitkovska. "Yield and Quality of Beetroot (Beta vulgaris ssp. esculenta L. ) as a Result of Microbial Fertilizers." Contemporary Agriculture 67, no. 1 (2018): 40–44. http://dx.doi.org/10.2478/contagri-2018-0006.

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Summary The purpose of this study is to examine the effect of two different types of microbial fertilizers, namely Micro-Vita I (containing several groups of Azotobacter, nitrifying microorganisms and phosphate-solubilizing microorganisms) and Micro-Vita II (containing Azotobacter, nitrifying microorganisms, phosphate-solubilizing microorganisms and iron), on the yield and quality of beetroot (Beta vulgaris ssp. esculenta, cv Kestrel). Beetroots grown in the field without using microbial fertilizers served as the experimental control. The experiments were conducted in a field located in the vi

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Tsyntsarski, Boyko, Ivanka Stoycheva, Georgi Georgiev, et al. "Refuse-derived Fuel Based Cobalt Catalysts for Hydrogen Production." Proceedings of the Bulgarian Academy of Sciences 75, no. 9 (2022): 1295–302. http://dx.doi.org/10.7546/crabs.2022.09.06.

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Refuse-derived fuel (RDF) is a mixed industrial waste, which often contains combustible materials (cellulose, polymers, rubber, biomass, etc.). The RDF waste precursor is subjected to thermo-oxidation treatment at 300℃, followed by carbonizations at 600℃, and high temperature hydropyrolysis at 800℃. The obtained nanoporous carbon material was subjected to detailed characterization by low temperature nitrogen sorption, elemental analysis, etc. Carbon derived from RDF is distinguished by micro/mesoporous texture and moderately high surface area (650 m2 g-1). The catalyst obtained is tested in th

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Liu, Enhai, Baozhong Zhu, Shengyong Liu, et al. "Biodegradation mechanism of biogas production by modified rice straw fermentation." BioResources 15, no. 4 (2020): 8862–82. http://dx.doi.org/10.15376/biores.15.4.8862-8882.

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Based on the literature on the degradation mechanism and the change of micro-functional groups in the fermentation process of modified rice straw, this study aimed to solve the problems of low biogas production rate and poor stability of the biogas production system. In this work, mathematical equations were developed and combined with duck dung and rice straw mixed raw material to perform a fermentation test. The molecular micro-functional group changes of cellulose, hemicellulose, and lignin were studied to obtain the optimal ratio of mixed raw materials for fermentation and to explore the o

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Cao, Ying, Wei Wang, and Wei Ma. "Analysis on the diffusion and mechanical properties of eucalyptus dried via supercritical carbon dioxide." BioResources 17, no. 3 (2022): 4018–29. http://dx.doi.org/10.15376/biores.17.3.4018-4029.

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Using the molecular dynamics software Materials Studio, a micro-level carbon dioxide – cellulose model was established to study the supercritical carbon dioxide drying of eucalyptus wood. The change of the primary components of the eucalyptus wood cellulose were also studied, by simulating various pressures, i.e., 10, 15, 20, 25, and 30 Pa, and simulating a temperature of 323 K. Results showed that the diffusion coefficient of carbon dioxide decreases as the pressure increases, and it reaches the maximum at 20 Pa, which was confirmed by the number of hydrogen bonds in the carbon dioxide cellul

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Morales-Juárez, Abraham Azael, Luis Daniel Terrazas Armendáriz, Juan Manuel Alcocer-González, and Leonardo Chávez-Guerrero. "Potential of Nanocellulose as a Dietary Fiber Isolated from Brewer’s Spent Grain." Polymers 15, no. 17 (2023): 3613. http://dx.doi.org/10.3390/polym15173613.

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Steady growth in beer production is increasing the number of by-products named brewers’ spent grain. Such by-products are a source of several components, where cellulose is usually present in high amounts. The aim of this study was to develop a protocol to obtain a mix of cellulose microfibers with an average diameter of 8–12 µm and cellulose nanoplatelets with an average thickness of 100 nm, which has several applications in the food industry. The process comprised one alkaline treatment followed by acid hydrolysis, giving a new mix of micro and nanocellulose. This mix was characterized by Fo

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Martínez, Héctor, Christian Brackmann, Annika Enejder, and Paul Gatenholm. "Mechanical stimulation of fibroblasts in micro-channeled bacterial cellulose scaffolds enhances production of oriented collagen fibers." Journal of Biomedical Materials Research Part A 100A, no. 4 (2012): 948–57. http://dx.doi.org/10.1002/jbm.a.34035.

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Sumarno, Sumarno, Yeni Rahmawati, P. N. T. Risanti, and N. E. Mayangsari. "The Effect of Decomposition Time on Cellulose Degradation in Ionic Liquid/Acid with Pressurized CO2." Modern Applied Science 9, no. 7 (2015): 69. http://dx.doi.org/10.5539/mas.v9n7p69.

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Cellulose material is the most abundant carbohydrate that has a simple polymer structure, but it forms ofcrystalline micro-fibrils lead it insoluble in various solvent and highly resistant for hydrolysis process. Thedegradation of cellulose into glucose will increase the raw material for production of ethanol, isopropanol orbutanol. The conversion into oligomer can be applied for pharmaceutical, food additives, etc. There are manytechnologies for conversion of cellulose such as degradation with ionic liquids, acid, enzymatic/fermentation,and hydrothermal. In this work, we studied cellulose dec

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C., Onuguh I., Ikhuoria E. U., and Obibuzo J. U. "Bioethanol Production From Rice Husk Through Shcf And Sscf Processing Strategies." International Journal of Research In Science & Engineering, no. 21 (January 22, 2022): 13–20. http://dx.doi.org/10.55529/ijrise.21.13.20.

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In many developing countries, there is great quest for achieving sustainable energy from the conversion of the huge biomass of organic wastes into useful biofuels such as bioethanol. Bioethanol is a renewable clean-liquid biofuel produced by fermentation of sugars or converted starch or cellulose from plant based feedstocks. It is conventionally produced from sugar and starch containing feedstocks. However, these feedstocks are unable to meet the global demand of bioethanol production due to their primary food value and legal pursuits against the legitimacy of their schemes. This study investi

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I.C., Onuguh, Ikhuoria E.U., and Obibuzo J.U. "Bioethanol Production from Rice Husk through SHCF and SSCF Processing Strategies." June-July 2022, no. 24 (July 29, 2022): 1–7. http://dx.doi.org/10.55529/jmc.24.1.7.

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In many developing countries, there is great quest for achieving sustainable energy from the conversion of the huge biomass of organic wastes into useful biofuels such as bioethanol. Bioethanol is a renewable clean-liquid biofuel produced by fermentation of sugars or converted starch or cellulose from plant based feedstocks. It is conventionally produced from sugar and starch containing feedstocks. However, these feedstocks are unable to meet the global demand of bioethanol production due to their primary food value and legal pursuits against the legitimacy of their schemes. This study investi

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Najaf Zadeh, Hossein, Daniel Bowles, Tim Huber, and Don Clucas. "A Novel Additive Manufacturing Method of Cellulose Gel." Materials 14, no. 22 (2021): 6988. http://dx.doi.org/10.3390/ma14226988.

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Screen-additive manufacturing (SAM) is a potential method for producing small intricate parts without waste generation, offering minimal production cost. A wide range of materials, including gels, can be shaped using this method. A gel material is composed of a three-dimensional cross-linked polymer or colloidal network immersed in a fluid, known as hydrogel when its main constituent fluid is water. Hydrogels are capable of absorbing and retaining large amounts of water. Cellulose gel is among the materials that can form hydrogels and, as shown in this work, has the required properties to be d

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Kim, Sang Yun, Sun Young Jung, Yung Bum Seo, and Jung Soo Han. "Preparation of Flexible Calcium Carbonate by In Situ Carbonation of the Chitin Fibrils and Its Use for Producing High Loaded Paper." Materials 16, no. 8 (2023): 2978. http://dx.doi.org/10.3390/ma16082978.

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Flexible calcium carbonate (FCC) was developed as a functional papermaking filler for high loaded paper, which was a fiber-like shaped calcium carbonate produced from the in situ carbonation process on the cellulose micro-or nanofibril surface. Chitin is the second most abundant renewable material after cellulose. In this study, a chitin microfibril was utilized as the fibril core for making the FCC. Cellulose fibrils for the preparation of FCC were obtained by fibrillation of the TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical) treated wood fibers. The chitin fibril was obtained from the

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Chongkhong, Sininart, and Chakrit Tongurai. "Alkaline Delignification of Banana Peel for Producing Pulp." Advanced Materials Research 1033-1034 (October 2014): 183–86. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.183.

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Delignification of banana peel, agricultural waste, is considered in the pulp production because lignin is a major obstacle to the gain of cellulose. The soda process as a conventional method and micro-morphology observed by scanning electron microscopy were fulfilled to investigate an optimal condition in this study. The results pointed the potent sequence of operating factors was delignification temperature > solid-liquid ratio > soda concentration > time. The removal of lignin could achieve 92% under the optimal condition using 12%w soda concentration with 1:8 solid-liquid ratio at

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Kusumaningrum, Wida Banar, R. Rochmadi, and S. Subyakto. "PEMBUATAN SELULOSA TERASETILASI DARI PULP BAMBU BETUNG (Dendrocalamus asper) SERTA PENGARUHNYA TERHADAP SIFAT MEKANIS BIOKOMPOSIT POLIPROPILENA." Reaktor 17, no. 1 (2017): 25. http://dx.doi.org/10.14710/reaktor.17.1.25-35.

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Abstract ACETYLATED CELLULOSE FROM BETUNG BAMBOO (Dendrocalamus asper) PULP PRODUCTION AND ITS EFFECT ON MECHANICAL PROPERTIES OF POLYPROPYLENE COMPOSITES. The utilization of natural fiber as reinforcing agent for biocomposite products have some drawbacks, such as its hydrophilicity that are incompatible with PP. Isolation from bundle fibers into micro fibers could improves the biocomposite properties. However, more moisture absorption of micro fiber makes it difficult to handle. Therefore, modification with acetylation is needed to facilitate good interfacial adhesion between cellulose and PP

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MOON, ROBERT J., CECILIA LAND HENSDAL, STEPHANIE BECK, et al. "Setting priorities in CNF particle size measurement: What is needed vs. what is feasible." February 2023 22, no. 2 (2023): 116–37. http://dx.doi.org/10.32964/tj22.2.116.

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Measuring the size of cellulose nanomaterials can be challenging, especially in the case of branched and entangled cellulose nanofibrils (CNFs). The International Organization for Standardization, Technical Committee 6, Task Group 1—Cellulosic Nanomaterials, is exploring opportunities to develop standard methods for the measurement of CNF particle size and particle size distribution. This paper presents a summary of the available measuring techniques, responses from a survey on the measurement needs of CNF companies and researchers, and outcomes from an international workshop on cellulose nano

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Bastida, Gabriela Adriana, Carla Natalí Schnell, Paulina Mocchiutti, et al. "Effect of Oxalic Acid Concentration and Different Mechanical Pre-Treatments on the Production of Cellulose Micro/Nanofibers." Nanomaterials 12, no. 17 (2022): 2908. http://dx.doi.org/10.3390/nano12172908.

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The present work analyzes the effect of process variables and the method of characterization of cellulose micro/nanofibers (CMNFs) obtained by different treatments. A chemical pre-treatment was performed using oxalic acid at 25 wt.% and 50 wt.%. Moreover, for mechanical pre-treatments, a rotary homogenizer or a PFI mill refiner were considered. For the mechanical fibrillation to obtain CMNFs, 5 and 15 passes through a pressurized homogenization were considered. The best results of nanofibrillation yield (76.5%), transmittance (72.1%) and surface charges (71.0 µeq/g CMNF) were obtained using th

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Kadhom, Mohammed, Noor Albayati, Suhaib Salih, Mustafa Al-Furaiji, Mohamed Bayati, and Baolin Deng. "Role of Cellulose Micro and Nano Crystals in Thin Film and Support Layer of Nanocomposite Membranes for Brackish Water Desalination." Membranes 9, no. 8 (2019): 101. http://dx.doi.org/10.3390/membranes9080101.

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Reverse osmosis is a major process that produces soft water from saline water, and its output represents the majority of the overall desalination plants production. Developing efficient membranes for this process is the aim of many research groups and companies. In this work, we studied the effect of adding cellulose micro crystals (CMCs) and cellulose nano crystals (CNCs) to the support layer and thin film nanocomposite (TFN) membrane on the desalination performance. SEM, TEM, ATR-FTIR, and contact angle measurements were used to characterize the membrane’s properties; and membrane’s performa

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Hamid, Sharifah Bee Abd, Mohammad Ziaul Karim, and Md Eaqub Ali. "Green Catalytic Approach for the Synthesis of Functionalized Nanocellulose from Palm Tree Biomass." Advanced Materials Research 925 (April 2014): 57–61. http://dx.doi.org/10.4028/www.scientific.net/amr.925.57.

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Oil palm is a major agricultural product in Malaysia and it covers approximately 5 million hectares of land. Palm tree biomass is a by-product of oil palm cultivation. Biomass is a complex structure composed of cellulose, hemicelluloses and lignin. Cellulose, which gives the mechanical properties to the natural fiber, is organized in micro-fibrils enclosed by the other two main components: hemicellulose and lignin. Cellulose microfibrils can be found as intertwined microfibrils in the cell wall (220 μm in diameter and 100 40,000 nm in length). Cellulose microfibrils are in turn exist in cellul

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Rahman, Muhammad M., and Anil N. Netravali. "Micro-fibrillated cellulose reinforced eco-friendly polymeric resin from non-edible ‘Jatropha curcas’ seed waste after biodiesel production." RSC Advances 6, no. 52 (2016): 47101–11. http://dx.doi.org/10.1039/c6ra07749h.

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Eco-friendly polymeric resin with desirable mechanical and physical properties was developed from non-edible protein extracted from Jatropha curcas (Jatropha) seed cake, so far considered as an agro-waste after oil extraction for bio-diesel conversion.

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Besharati, M., A. Taghizadeh, and A. Ansari. "Effect of adding different levels of probiotic on in vitro gas production." Proceedings of the British Society of Animal Science 2009 (April 2009): 187. http://dx.doi.org/10.1017/s175275620003026x.

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Probiotics present an attractive alternative to the use of chemical and hormonal promoters in the livestock growth production industry. Preparations that contain micro-organisms have been safely used for many years and are generally accepted by both the farmer and the final consumer. Saccharomyces cerevisiae supplementation in ruminant diets can increase DMI, production performance, cellulose degradation, and nutrient digestibility (Callaway and Martin, 1997). The gas measuring technique has been widely used for the evaluation of nutritive value of feeds. Gas measurement provides useful data o

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