scholarly journals PENGARUH PENAMBAHAN PELEPAH KELAPA SAWIT SEBAGAI BAHAN CAMPURAN TERHADAP SIFAT MEKANIK KUAT TEKAN DAN POROSITAS BATU BATA

2019 ◽  
Vol 1 (2) ◽  
pp. 47-53
Author(s):  
Seno Aji ◽  
Teguh Satria Mahlindo ◽  
Sari Anggraini
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Oil Palm ◽  
Block Design ◽  
Test Results ◽  
Oil Palm Fronds ◽  
Randomized Block Design ◽  
Strength Tests ◽  
Palm Fronds ◽  
Palm Frond

This study aimed to determine the effect of oil palm fronds addition as a mixture to the mechanical properties of bricks in terms of porosity testing, and compressive strength, and to determine the proper percentage of oil palm frond additions. This research is a type of experiment with a randomized block design (RBD) arranged non-factorial and the data is processed using the SPSS 20 Tukey test program. This study used a brick-shaped sample with a length of 19 cm, a width of 9.5 cm and a height of 4.5 cm. Variations in the composition of the added oil palm fronds are 0%, 5%, 10%, 15%, and 20%. Parameter mechanical properties of bricks included porosity, and compressive strength tests. The addition of oil palm fronds with a composition percentage of 0% to 10% affected the mechanical properties of the bricks by reducing porosity and increasing the compressive strength of the bricks. Based on the test results obtained by each of the best test values, namely the minimum porosity value achieved in the percentage of oil palm fronds as much as 10%, which is 18.4%. The optimum compressive strength value is achieved on the percentage of oil palm fronds as much as 10% which is equal to 20.5 N / mm².

scholarly journals Efek suplementasi tepung kulit jengkol pada pelepah sawit fermentasi terhadap profil mikroba rumen dan produksi gas metan in vitro

2021 ◽  
Vol 19 (1) ◽  
pp. 13
Author(s):  
Nurhaita Nurhaita ◽  
Nur Hidayah ◽  
Neli Definiati
Keyword(s):  
Oil Palm ◽  
Methane Production ◽  
Block Design ◽  
Cellulolytic Bacteria ◽  
Rumen Microbes ◽  
Oil Palm Fronds ◽  
Randomized Block Design ◽  
Palm Fronds ◽  
Range Test

<p class="MDPI17abstract"><strong>Objective: </strong>This research was aimed to evaluation the effect of supplementation jengkol peel powder in fermented oil palm fronds on rumen microbes profile and methane production on <em>in vitro</em>.</p><p class="MDPI17abstract"><strong>Methods: </strong>The used design was factorial randomized block design with four treatments supplementation of jengkol peel powder at 0, 2, 4, and 6% and four groups as replications. The observed variables were rumen microbes profile (population of total bacteria, cellulolytic, and protozoa), methane production, partial <em>volatile fatty acid</em> (VFA) proportion and acetate/propionate (A/P) ratio. The data were analyzed using ANOVA and different among treatments means examined by Duncan Multiple Range Test (DMRT).<strong></strong></p><p class="MDPI17abstract"><strong>Results: </strong>The result showed that supplementation of jengkol peel powder at 6% substrate increased (P&lt;0.05) total and cellulolytic bacteria population. Jengkol peel powder supplementation as much as 4 and 6% decreased (P&lt;0.05) protozoa population, methane production, acetate proportion and A/P ratio. Supplementation of jengkol peel powder at 2% increased (P&lt;0.05) propionate production.<strong></strong></p><p class="MDPI17abstract"><strong>Conclusions: </strong>In conclusion, fermented oil palm fronds can be substituted with jengkol peel powder at 2% substrate that did not disturb rumen microbes profile, decreased methane production, acetate proportion, A/P ratio and increased propionate production on <em>in vitro</em>.<strong></strong></p>

The Effects of Oil Palm Fronds Silage Supplemented with Urea-Calcium Hydroxide on Rumen Fermentation and Nutrient Digestibility of Thai Native-Anglo Nubian Goats

Fermentation ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 218
Author(s):  
Pin Chanjula ◽  
Chanon Suntara ◽  
Anusorn Cherdthong
Keyword(s):  
Calcium Hydroxide ◽  
Oil Palm ◽  
Rumen Fermentation ◽  
Nutrient Digestibility ◽  
The Other ◽  
Fresh Matter ◽  
Oil Palm Fronds ◽  
Oil Palm Frond ◽  
Palm Fronds ◽  
Palm Frond

This study aimed to examine the combined effects of urea and calcium hydroxide ensiled oil palm fronds on rumen fermentation and digestibility of Thai native-Anglo Nubian goats. A 4 × 4 Latin square design was used to randomly assign four male crossbred goats (Thai native × Anglo Nubian). The dietary treatments were as follows: ensiled oil palm frond with no additives (EOPF as the control), urea 5% (50 g/kg fresh matter) (E-UOPF 5%), calcium hydroxide (Ca(OH)2) 5% (50 g/kg fresh matter) (E-CaOPF 5%), and combination of urea 2.5% (25 g/kg fresh matter) with Ca(OH)2 (25 g/kg fresh matter) (E-UCOPF 2.5%). The oil palm frond ensiled with different additives did not change the DM intake (p > 0.05). The total TMR intakes range from 69.39 to 77.09 g/kg BW0.75. The goats fed with E-UOPF 5.0% consumed significantly more CP than the other groups (p < 0.05). The E-UCOPF increased ME intake by 4.8%, compared with the control treatment (p < 0.05). E-UOPF 5% and E-UCOPF 2.5% significantly increased the CP digestibility by 19.7% and 17.1%, respectively (p < 0.05). Furthermore, E-CaOPF 5.0% and E-UCOPF 2.5% improved the NDF digestibility by about 10.9% and 9.90%, respectively (p < 0.05). The urea-containing oil palm frond (E-UOPF 5.0% and E-UCOPF 2.5%) had higher blood urea nitrogen (BUN) than the other groups (p < 0.05). The TVFA of goats fed E-UCOPF 2.5% was approximately 15.8% higher than that of goats provide EOPF (p < 0.05). The mean concentration of C3 increased by 7.90% and 11.61%, respectively, when E-CaOPF 5.0% and E-UCOPF 2.5% were provided instead of EOPF (p < 0.05). The total N intake and absorbed were highest (p < 0.05) when goats offered E-UOPF 5.0% (p < 0.05). The goats fed oil palm frond without additives had the lowest percentage of N-absorption/N intake (p < 0.05). This study clearly shows that the most suitable treatment is E-UCOPF 2.5%, which enhances DMD, nutrient digestibility, TVFAs, and nitrogen balance and has no negative effects on rumen microbes. This indicates that E-UCOPF 2.5% may be utilized as an alternate roughage source in TMR diets, accounting for at least 40% of the OPF. However, several factors still require consideration for urea-Ca(OH)2 treatments to be successful, including other concentrations of urea, moisture content, duration of pre-treatment, and the metabolizable protein system.

Characteristics and Properties of Reinforced Oil Palm Frond Fibers (OPFF) in Polyvinyl Alcohol (PVA) Composite for Tubular-Shaped Trays

2015 ◽  
Vol 751 ◽  
pp. 3-8
Author(s):  
Nawapon Sukudom ◽  
Lerpong Jarupan
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Oil Palm ◽  
Morphological Properties ◽  
Degree Of Crystallinity ◽  
Poly Vinyl Alcohol ◽  
Oil Palm Frond ◽  
The Matrix ◽  
Twin Screw ◽  
Palm Frond

Effects on characteristics and mechanical properties of oil palm frond fiber (OPFF) as a reinforced element in poly vinyl alcohol (PVA) were investigated in this study. Series of different loading of OPFF were prepared by the following compositions: 5, 10, 15, 20 and 25 part per resin (phr). Glycerol at 35 phr was also compounded using twin-screw extruder to decrease degree of crystallinity and to reduce shear force of PVA to improve the processability. Injection molding was used to produce specimen for testing. The results indicated that the OPFF has an impact on mechanical properties of the composite material. Different scanning calorimeter (DSC) showed that the melting temperature (Tm) of OPFF reinforced PVA blended with glycerol was shifted to having decrease when compared to the pure PVA. Different loading contents of OPFF indicated that the compressive strength and morphological properties performed by a similar fashion. A highest compressive strength and the modulus of OPFF-reinforced PVA at 25 phr were achieved. Scanning electron microscope (SEM) indicated that OPFF-reinforced PVA at 25 phr yielded no accumulation of OPFF fibers but showed the dispersion in the matrix phase. In conclusion, the OPFF derived from oil palm industry can be used as reinforcement for manufacturing of plant pot in the future stage

scholarly journals Growth of Porang Plants by Cutting the Midrib Tip and Providing Various Types of Biochar as an Intercropping in Interspace Oil Palm

2021 ◽  
Author(s):  
Iqbal Effendy ◽  
Samsul Bahri
Keyword(s):  
Oil Palm ◽  
Block Design ◽  
Low Light ◽  
Alternative Source ◽  
Land Equivalent Ratio ◽  
Randomized Block Design ◽  
Treatment Factor ◽  
Number Of Leaves ◽  
Rice Husk Biochar ◽  
Palm Fronds

To increase the income of smallholder oil palm farmers through the developmentof a polyculture pattern, which is expected to increase the LER (land Equivalent Ratio) byplanting porang Plant, witch tolerant to low light intensity. This study aims to determine theeffect of cutting the tip of oil palm fronds to increase light interception and to evaluate varioustypes of biochar on the growth of porang plants, using a randomized block design (RBD)arranged in factorial with three replications. The first treatment factor is cutting the tip of thepalm frond (C), namely cutting 1 m (C1), cutting 2 m (C2), and cutting 3 m (C3). The secondtreatment factor is the type of biochar (B) namely rice husk biochar (B1), corn cobs biochar (B2), and coconut shell biochar (B3). The results showed that the interaction between thetreatments had a significant effect on plant height, the number of leaves, stem diameter, anddry weight of stalks. Overall, the results of this study provide hope for the development ofpolyculture oil palm plantations with porang plants to increase farmers' income and at the sametime become an alternative source of carbohydrates considering that porang is capable ofproducing tubers of up to 40-50 tons per ha.

scholarly journals Eco-friendly Board from Oil Palm Frond and Citric Acid

2017 ◽  
Vol 4 (2) ◽  
pp. 72-75
Author(s):  
Firda Aulya Syamani ◽  
Sasa Sofyan Munawar
Keyword(s):  
Citric Acid ◽  
Acid Solution ◽  
Oil Palm ◽  
Functional Group ◽  
Citric Acid Solution ◽  
Oil Palm Fronds ◽  
Oil Palm Frond ◽  
Citric Acid Content ◽  
Palm Fronds ◽  
Palm Frond

The utilization of oil palm fronds as composite board raw material has developed due to the declining wood supply. Currently, citric acid is used as natural adhesive on the wood-based moldings to reduce the use formaldehyde-based resin. Citric acid has carboxylic acid functional group that can react with hydroxyl functional group from cellulose by esterification reaction. This paper explain the production of board from oil palm frond and citric acid, then elaborate their physical and mechanical properties.  Oil palm fronds were processed with ring flaker to produce particles with 1 ~ 5 cm length. The particles were dried until the moisture content reached 6%. Citric acid solution was obtained by stirring 700 g citric acid in 1000 ml water.  Citric acid solution were sprayed onto particles. The weight of citric acid were 10%, 15% and 20% based on oil palm fronds’ dry weight. Boards were produced with density target of 0.6 g/cm3 and pressure at 1N/mm2 for 10 min. The hot pressing temperatures were varied at 140ºC, 160ºC, 180ºC, and 200ºC. Physical and mechanical test were performed according to JIS A 5908-2003. The MOR, MOE, IB and SW values of boards with 15 wt% citric acid content and pressed at 200oC were 5.85 N/mm2, 1067.03  N/mm2, 0.26 N/mm2 and 88.80 N respectively. The optimum condition for board production obtained upon citric acid content and pressing temperature in a range of 15% ~ 20% and 180ºC ~ 200ºC, respectively.

Sunlight exposure: the effects on the performance of paragliding fabric

2018 ◽  
Vol 69 (05) ◽  
pp. 381-389
Author(s):  
MENGÜÇ GAMZE SÜPÜREN ◽  
TEMEL EMRAH ◽  
BOZDOĞAN FARUK
Keyword(s):  
Mechanical Properties ◽  
Aging Process ◽  
Air Permeability ◽  
Sunlight Exposure ◽  
Test Results ◽  
Coating Materials ◽  
Strength Tests ◽  
Before And After ◽  
The Relationship ◽  
Dark Blue

This study was designed to explore the relationship between sunlight exposure and the mechanical properties of paragliding fabrics which have different colors, densities, yarn counts, and coating materials. This study exposed 5 different colors of paragliding fabrics (red, turquoise, dark blue, orange, and white) to intense sunlight for 150 hours during the summer from 9:00 a.m. to 3:00 p.m. for 5 days a week for 5 weeks. Before and after the UV radiation aging process, the air permeability, tensile strength, tear strength, and bursting strength tests were performed. Test results were also evaluated using statistical methods. According to the results, the fading of the turquoise fabric was found to be the highest among the studied fabrics. It was determined that there is a significant decrease in the mechanical properties of the fabrics after sunlight exposure. After aging, the fabrics become considerably weaker in the case of mechanical properties due to the degradation in both the dyestuff and macromolecular structure of the fiber

A Utilization of Choline Chloride-Based Deep Eutectic Solvent Integrated with Alkaline Earth Metal Hexahydrate in the Pretreatment of Oil Palm Fronds

2021 ◽  
Vol 60 (5) ◽  
pp. 2011-2026
Author(s):  
Eng Kein New ◽  
Ta Yeong Wu ◽  
Khai Shing Voon ◽  
Alessandra Procentese ◽  
Katrina Pui Yee Shak ◽  
...  
Keyword(s):  
Oil Palm ◽  
Alkaline Earth ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Oil Palm Fronds ◽  
Palm Fronds

scholarly journals Properties of High-Strength Flowable Mortar Reinforced with Palm Fibers

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Eethar Thanon Dawood ◽  
Mahyuddin Ramli
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
Physical And Mechanical Properties ◽  
High Strength ◽  
Test Results ◽  
Palm Fiber ◽  
Toughness Index ◽  
Strength And Toughness

This study was conducted to determine some physical and mechanical properties of high-strength flowable mortar reinforced with different percentages of palm fiber (0, 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, and 1.6% as volumetric fractions). The density, compressive strength, flexural strength, and toughness index were tested to determine the mechanical properties of this mortar. Test results illustrate that the inclusion of this fiber reduces the density of mortar. The use of 0.6% of palm fiber increases the compressive strength and flexural strength by about 15.1%, and 16%, respectively; besides, the toughness index (I5) of the high-strength flowable mortar has been significantly enhanced by the use of 1% and more of palm fiber.

Size Effect on Mechanical Properties of LVL

2014 ◽  
Vol 887-888 ◽  
pp. 824-829
Author(s):  
Qing Fang Lv ◽  
Ji Hong Qin ◽  
Ran Zhu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Size Effect ◽  
Tensile Test ◽  
Compression Test ◽  
Test Results ◽  
Laminated Veneer Lumber ◽  
Object Of Study ◽  
The Relationship

Laminated veneer lumber is taken as an object of study, and use LVL specimens of different sizes for compression test and tensile test. The goal of the experiment is to investigate the size effect on compressive strength and tensile strength as well as the influence of the secondary glued laminated face, which appears in the secondary molding processes. The results show that both compressive strength and tensile strength have the size effect apparently and the existence of the secondary glued laminated face lower the compressive strength of LVL specimens. Afterwards, the relationship between compressive strength and volume along with tensile strength and area are obtained by the test results.

Deterioration of Mechanical Properties of High-Strength Pumpcrete after Exposure to High Temperatures

2010 ◽  
Vol 168-170 ◽  
pp. 564-569
Author(s):  
Guang Lin Yuan ◽  
Jing Wei Zhang ◽  
Jian Wen Chen ◽  
Dan Yu Zhu
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Heating Rate ◽  
High Strength Concrete ◽  
Heating Temperature ◽  
High Strength ◽  
Air Cooling ◽  
Test Results ◽  
Strength Deterioration ◽  
Residual Compressive Strength

This paper makes an experimental study of mechanical properties of high-strength pumpcrete under fire, and the effects of heating rate, heating temperature and cooling mode on the residual compressive strength(RCS) of high-strength pumpcrete are investigated. The results show that under air cooling, the strength deterioration speed of high-strength concrete after high temperature increases with the increase of concrete strength grade. Also, the higher heating temperature is, the lower residual compressive strength value is. At the same heating rate (10°C/min), the residual compressive strength of C45 concrete after water cooling is a little higher than that after air cooling; but the test results are just the opposite for C55 and C65 concrete. The strength deterioration speed of high-strength concrete after high temperature increases with the increase of heating rate, but not in proportion. And when the heating temperature rises up between 200°C and 500°C, heating rate has the most remarkable effect on the residual compressive strength of concrete. These test results provide scientific proofs for further evaluation and analysis of mechanical properties of reinforced-concrete after exposure to high temperatures.

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