Oil palm empty fruit bunch fibres as sustainable acoustic absorber

Or, Khai Hee; Putra, Azma; Selamat, Mohd Zulkefli

doi:10.1016/j.apacoust.2016.12.002

Cited by 116 publications

(49 citation statements)

References 14 publications

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“…Kelly-Yong et al [60] reported 4.4 tonnes of EFBF per hectare per year, as waste from oil palm refineries. They were either discarded as waste [11,43], or used as fuel in boilers for the generation of electricity for the oil palm plantation mills. Other uses of the fiber include, manure, mulching [26], and recently in polymer composites [42,[61][62][63][64]].…”

Section: Empty Fruit Bunch Fibers (Efbf)mentioning

confidence: 99%

“…Although, the earliest record of investigation into reinforcing concrete with oil palm fibers (OPF) was in the 1980s [1], it has recently attracted interest due to increasing level of awareness of the importance of environmental sustainability. Fibers obtained from all parts of the oil palm have been investigated for possible use in construction [24,[37][38][39][40][41][42][43][44][45][46][47] and previous studies have carried out investigations on the engineering properties and possible applications of these fibers [20,[39][40][41][48][49][50][51][52][53][54][55][56]. However, there have been inconsistencies in the experimental methods employed, and values reported in various studies on properties of the fiber.…”

Section: Introductionmentioning

confidence: 99%

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Recent developments in the application of oil palm fibers in cement composites

Momoh

Osofero

2020

Front. Struct. Civ. Eng.

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Fibers obtained from different parts of the oil palm tree (Elaeis guineensis) have been under investigation for possible use in construction. Studies have been carried out investigating the engineering properties and possible applications of these fibers. However, the experimental methods employed and the values of mechanical and physical properties recorded by various authors are inconsistent. It has therefore become necessary to organize information which would be useful in the design of oil palm fiber cement composites and help researchers and engineers make informed decisions in further research and application. This review provides information about fibers from different parts of the oil palm, their properties, enhancement techniques, current and potential application in cement composites.

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Section: Empty Fruit Bunch Fibers (Efbf)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent developments in the application of oil palm fibers in cement composites

Momoh

Osofero

2020

Front. Struct. Civ. Eng.

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“…And in this way and in the literature, there are several works and studies already made on deferents kind of porous materials (Fibrous or granular), as K.H. Or [2] et al who have worked on bulk fruit fibers, and they found that the fibres of the empty palm fruit cluster are a very good sound absorbent and can be an alternative to the synthetic absorber (mineral fibres). The increase in mass or density as defined by K.H.…”

Section: Introductionmentioning

confidence: 90%

“…The increase in mass or density as defined by K.H. Or [2] gives a high absorption coefficient in high frequencies. For 10 mm samples with 4gram fibres, the absorption coefficient can attain 0.75 at 2500Hz.…”

Section: Introductionmentioning

confidence: 99%

“…All sound absorption tests in K.H. Or's work [2] were done with the acoustic impedance tube or the Kundt tube. On the other hand, Garoum et al [3] worked on the measurement of the acoustic absorption factor in a normal incidence and also on the estimation of the physical parameters of a granular bulk cork, for a low, medium and high granulometry.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Sound Absorption of Several Loose Uncooked Granular Materials

BOUBEL*,

BOUSSHINE,

GAROUM

et al. 2019

IJITEE

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Absorbent materials it's an acoustic solution that can be used to control the reverberation time (RT) in deferent spaces as: conference rooms, in halls, theaters, cinema.... and also, it can be used in walls or ceilings of buildings to improve the acoustic insulation Which can be used for internal separations between spaces. This study focuses on the experimental study of the acoustic absorption coefficient of several granular food materials as a function of frequency 50 to 1600 Hz. All acoustic absorption tests performed in this study are performed by an acoustic impedance tube or Kundt tube. And to the knowledge of the author it is the first time in the literature that someone studies the acoustic behavior of this kind of materials. Several parameters were studied such as the effect of thickness on the sound absorption coefficient of the materials tested, like the influence of the grain form on the acoustic absorption by the introduction of a new parameter L / D, and finally the influence of density and type of material on the sound absorption coefficient. The objective of this work is to study the influence of the grain shape on the sound absorption coefficient, and that's why we have chosen these fifteen materials each one with its own shape. The results of these experimental tests show that when the sample thickness rises, the acoustic absorption coefficient rises too with a shift from resonance frequency to low frequencies. When the L/D parameter rises, the absorption behavior increases too in all frequencies mentioned. Finally, as the density of the tested material rises, the percentage of sound absorption of the materials also rises

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Recent progress in thermal and acoustic properties of natural fiber reinforced polymer composites: Preparation, characterization, and data analysis

Dev,

Rahman,

Repon

et al. 2023

Polymer Composites

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Natural fiber reinforced polymer composites (NFRPCs) have emerged as promising eco‐friendly alternatives over conventional synthetic fiber composites due to their inherent biodegradability, renewability, low environmental impact, and lightweight properties. It has been seen a significant growth in both invention and innovation in the field of NFRPCs. Natural fibers (NFs) reduce the cost of the material by 5%, the weight of the composite by 10%, and the energy required for production by 80%. In terms of thermal, and acoustic properties, NFs can successfully compete with synthetic fibers. As a result, the development of NFRPCs for industrial use has increased significantly in the past decade to meet the growing demands of industrial sectors. To improve the thermal and acoustic properties of NFRPCs, researchers have done a lot of investigation. The aim of the current review is to provide a comprehensive analysis of the existing literature on the thermal and acoustic properties of natural fiber reinforced polymer composites. Thermal properties such as thermal conductivity, TGA, DSC, DMA, and acoustic properties of natural fiber reinforced composites with several parameters, such as different fiber types, different matrix types, fiber weight ratio, fiber to matrix ratio, chemical treatment of fiber have been summarized and analyzed very concisely. This review also emphasizes a summary of different natural fibers, their chemical compositions, composite preparation, characterizations, and future research directions. This article enables the readers, researchers, and manufacturers to realize several opportunities about the latest developments in NFRPCs for the application of thermal and acoustic purposes.Highlights Natural fibers can successfully compete with synthetic fibers, in terms of thermal and acoustic properties. Thermal properties of natural fiber reinforced composites including thermal conductivity, TGA, DSC, and DMA are summarized. Acoustic properties of natural fiber reinforced polymer composites are discussed. Composite materials made of treated fibers result better thermal stability than untreated fiber composites. Sound absorption coefficient generally increases as fiber content increases.

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Oil palm empty fruit bunch fibres as sustainable acoustic absorber

Cited by 116 publications

References 14 publications

Recent developments in the application of oil palm fibers in cement composites

Recent developments in the application of oil palm fibers in cement composites

Experimental Sound Absorption of Several Loose Uncooked Granular Materials

Recent progress in thermal and acoustic properties of natural fiber reinforced polymer composites: Preparation, characterization, and data analysis

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