Co-modification of corn straw lignin and its enhancement on glue-free fiberboard based on freezing activated wood fibers

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

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PREPARATION AND CHARACTERIZATION OF REPROCESSED COMPOSITES OF POLYPROPYLENE REINFORCED BY WOOD FIBERS: PHYSICAL AND MECHANICAL PROPERTIES

10.26678/abcm.cobem2017.cob17-1636 ◽

2017 ◽

Author(s):

Thais Helena Sydenstricker Flores-Sahagun ◽

Kelly Priscila Agapito ◽

ROSA MARIA JIMENEZ AMEZCUA ◽

Felipe Jedyn

Keyword(s):

Mechanical Properties ◽

Physical And Mechanical Properties ◽

Wood Fibers

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Mengembangkan Ayam Buras Dan Sapi Potong Untuk Meningkatkan Pendapatan Petani Kabupaten Maros

JATI EMAS (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) ◽

10.36339/je.v3i2.248 ◽

2019 ◽

Vol 3 (2) ◽

pp. 172

Author(s):

Sri - Purwanti ◽

Syamsuddin Nompo ◽

Laily Agustina ◽

Muh. Nur Hidayat

Keyword(s):

Beef Cattle ◽

Rice Straw ◽

Dry Season ◽

Farm Management ◽

Family Ownership ◽

Cattle Population ◽

Corn Straw ◽

Livestock Feed ◽

Coaching Training ◽

Meat And Eggs

The activities conducted in Maros regency Tanralili district Purnakarya village in chickens and beef cattle groups Cedde Jaya. The main source of livestock feed cows during the dry season are dry forage, rice straw, corn straw and hay crops of nuts which happened to be planted at the time of drought. Besides, leaf Gamal is also a main feed in dry season. Number of cattle per family ownership only 2-3 head extensively maintained. Range chicken as well as extensive maintenance, ownership on average 2-5 chicken each household group. To increase the productivity of cattle, the team provides counseling, coaching, training and mentoring as well as providing some main of facilities such as cattle shed, biogas digester, planting banana. Results are expected in the presence of activities is the avaibility of green forage mainly during the dry season, so that the cattle population will increase, the biogas as a fuel alternative to kerosin and LPG gas, liquid and solid fertilizer from biogas by-product process, the increasing population of chicken qualified (meat and eggs as well as the day old chick). Besides the problem of production is also done on the farm management. The activities is expected that will increase the incomes of farmers further improve the welfare of Maros regency. For the sustainability of the program it is necessary supervision and guidance are routinely performed by the related department along with the college.

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PURPOSE ULTIMATE BEARING CAPACITY OF GLUED WASHERS AT TRANSFER EFFORTS ANGLE TO WOOD FIBERS

10.21506/j.ponte.2017.2.25 ◽

2017 ◽

Vol 73 (2) ◽

Author(s):

Garkin Igor ◽

Ariskin Maxim

Keyword(s):

Bearing Capacity ◽

Ultimate Bearing Capacity ◽

Wood Fibers

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Symmetric Nature of Stress Distribution in the Elastic-Plastic Range of Pinus L. Pine Wood Samples Determined Experimentally and Using the Finite Element Method (FEM)

Symmetry ◽

10.3390/sym13010039 ◽

2020 ◽

Vol 13 (1) ◽

pp. 39

Author(s):

Łukasz Warguła ◽

Dominik Wojtkowiak ◽

Mateusz Kukla ◽

Krzysztof Talaśka

Keyword(s):

Mechanical Properties ◽

Finite Element ◽

Stress Distribution ◽

Moisture Content ◽

Tool Geometry ◽

Wood Fibers ◽

Data Set ◽

Plastic Deformations ◽

Pine Wood ◽

Elastic Plastic

This article presents the results of experimental research on the mechanical properties of pine wood (Pinus L. Sp. Pl. 1000. 1753). In the course of the research process, stress-strain curves were determined for cases of tensile, compression and shear of standardized shapes samples. The collected data set was used to determine several material constants such as: modulus of elasticity, shear modulus or yield point. The aim of the research was to determine the material properties necessary to develop the model used in the finite element analysis (FEM), which demonstrates the symmetrical nature of the stress distribution in the sample. This model will be used to analyze the process of grinding wood base materials in terms of the peak cutting force estimation and the tool geometry influence determination. The main purpose of the developed model will be to determine the maximum stress value necessary to estimate the destructive force for the tested wood sample. The tests were carried out for timber of around 8.74% and 19.9% moisture content (MC). Significant differences were found between the mechanical properties of wood depending on moisture content and the direction of the applied force depending on the arrangement of wood fibers. Unlike other studies in the literature, this one relates to all three stress states (tensile, compression and shear) in all significant directions (anatomical). To verify the usability of the determined mechanical parameters of wood, all three strength tests (tensile, compression and shear) were mapped in the FEM analysis. The accuracy of the model in determining the maximum destructive force of the material is equal to the average 8% (for tensile testing 14%, compression 2.5%, shear 6.5%), while the average coverage of the FEM characteristic with the results of the strength test in the field of elastic-plastic deformations with the adopted ±15% error overlap on average by about 77%. The analyses were performed in the ABAQUS/Standard 2020 program in the field of elastic-plastic deformations. Research with the use of numerical models after extension with a damage model will enable the design of energy-saving and durable grinding machines.

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Physical and mechanical properties of unsaturated polyester resin matrix from recycled PET (based PG ) with corn straw fiber

Journal of Applied Polymer Science ◽

10.1002/app.51305 ◽

2021 ◽

pp. 51305

Author(s):

Nora Abigail Wilson García ◽

Jorge Luis Almaral Sánchez ◽

Ramón Álvaro Vargas Ortiz ◽

Abel Hurtado Macías ◽

Nelly Flores Ramírez ◽

...

Keyword(s):

Mechanical Properties ◽

Polyester Resin ◽

Unsaturated Polyester ◽

Physical And Mechanical Properties ◽

Unsaturated Polyester Resin ◽

Resin Matrix ◽

Corn Straw ◽

Recycled Pet

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Low-Cost Organic Adsorbents for Elemental Mercury Removal from Lignite Flue Gas

Energies ◽

10.3390/en14082174 ◽

2021 ◽

Vol 14 (8) ◽

pp. 2174

Author(s):

Marta Marczak-Grzesik ◽

Stanisław Budzyń ◽

Barbara Tora ◽

Szymon Szufa ◽

Krzysztof Kogut ◽

...

Keyword(s):

Flue Gas ◽

Low Cost ◽

Elemental Mercury ◽

Mercury Content ◽

Flue Gases ◽

Mercury Removal ◽

Gas Purification ◽

Gas Temperature ◽

Corn Straw ◽

Flue Gas Purification

The research presented by the authors in this paper focused on understanding the behavior of mercury during coal combustion and flue gas purification operations. The goal was to determine the flue gas temperature on the mercury emissions limits for the combustion of lignites in the energy sector. The authors examined the process of sorption of mercury from flue gases using fine-grained organic materials. The main objectives of this study were to recommend a low-cost organic adsorbent such as coke dust (CD), corn straw char (CS-400), brominated corn straw char (CS-400-Br), rubber char (RC-600) or granulated rubber char (GRC-600) to efficiently substitute expensive dust-sized activated carbon. The study covered combustion of lignite from a Polish field. The experiment was conducted at temperatures reflecting conditions inside a flue gas purification installation. One of the tested sorbents—tire-derived rubber char that was obtained by pyrolysis—exhibited good potential for Hg0 into Hg2+ oxidation, resulting in enhanced mercury removal from the flue. The char characterization increased elevated bromine content (mercury oxidizing agent) in comparison to the other selected adsorbents. This paper presents the results of laboratory tests of mercury sorption from the flue gases at temperatures of 95, 125, 155 and 185 °C. The average mercury content in Polish lignite was 465 μg·kg−1. The concentration of mercury in flue gases emitted into the atmosphere was 17.8 µg·m−3. The study analyzed five low-cost sorbents with the average achieved efficiency of mercury removal from 18.3% to 96.1% for lignite combustion depending on the flue gas temperature.

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