Biosilica Properties from Rice Husk using Various HCl Concentrations and Frequency Sources

Irzaman, Irzaman; Cahyani, Indah Dwi; Maddu, Akhiruddin; Yuliarto, Brian; Siregar, Ulfah Juniarti

doi:10.21608/ejchem.2019.8044.1679

Cited by 12 publications

(18 citation statements)

References 20 publications

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“…This problem has become a national and international agenda; therefore, biodegradable natural or bio-based fibers, e.g., synthetic fibers, have been the center of research in the materials field for the last decade (Mohanty et al 2005). Additional reasons include: low cost, light-weight nature, specific properties that are comparable to synthetic fibers, ease of separation, sequestration of carbon dioxide, noncorrosive nature, and the ability to reduce machine, heat (global warming), and respiratory irritation (Abdurrahman et al 2019;Irzaman et al 2019). These reasons have led to increasing interest in the use of natural materials (bio fiber) as a substitute for synthetic materials, which is the primary topic in the field of biomaterials (Chauhan and Chauhan 2013).…”

Section: Introductionmentioning

confidence: 99%

Kinematics and dynamics of the ballistic impact behavior for an oil palm empty fruit bunch fiber reinforced bio-composite

Nikmatin

Hermawan

Indro

et al. 2020

BioRes

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The ballistic impact behavior of oil empty fruit bunch fiber reinforced bio-composites was studied. Epoxy and polyester resins were used as the main material and were evaluated as a matrix to determine their capability. The ballistic test was performed using a 9 mm handgun and a jacketed hollow point round. A model based on kinematics and dynamics was used to calculate the decrease in velocity of the projectile with a constant deceleration. The energy lost during the impact was calculated based on the theory of kinetic energy. The epoxy bio-composite was able to hold a projectile more successfully than the polyester bio-composite at a certain penetration depth. The curve of the decrease in velocity for both of the resins was exponentially distributed. An 18% epoxy bio-composite was able to more successfully stop the projectile at a penetrative depth of 2.14 mm and was able to absorb all the kinetic energy generated (408 J).

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Section: Introductionmentioning

confidence: 99%

Kinematics and dynamics of the ballistic impact behavior for an oil palm empty fruit bunch fiber reinforced bio-composite

Nikmatin

Hermawan

Indro

et al. 2020

BioRes

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“…The charcoal process of cogon grass was conducted by referencing the studies on silica of bamboo leaf [28][29][30][31] and rice husk [14,15,17]. The washed cogon grasses were dried using sunlight, then weighed as much as 1000 grams.…”

Section: Charcoal Process Of Cogon Grassmentioning

confidence: 99%

“…The silica of bagasse charcoal and rice straw, and rice husk also have been studied by Adli et al [22], Nazopatul et al [23], and Sintha et al [24], respectively, using HCl of 3%. Irzaman et al [17] also reported that 3% HCl can produce the highest purity and electrical conductance, conductivity, and dielectric constant on silica of rice husk. However, data on silica content from cogon grass and its properties such as electrical, surface morphological, and structural have not been much documented.…”

Section: Introductionmentioning

confidence: 97%

“…Several studies related to the extraction of silica from biomass such as rice husk using 3% HCl and various ashing temperatures have been conducted such as Masrur et al [14], Rohaeti et al [15], Fatoni [16], and Irzaman et al [17] by producing silica purity more than 99%. Besides, several studies on silica from bamboo leaf also have been conducted by Aminullah et al [18,19] and Sa'diyah [20] as well as Irzaman et al [21] using HCl leaching.…”

Section: Introductionmentioning

confidence: 99%

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Purity, Morphological, and Electrical Characterization of Silicon Dioxide from Cogon Grass (Imperata cylindrica) Using Different Ashing Temperatures

2021

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Cogon grass (Imperata cylindrica) was a detrimental plant and often found in the tropics which contains silicon dioxide. The objective of this study was to extract silicon dioxide from cogon grass and to study the purity, crystal structural, and electrical properties of silicon dioxide from cogon grass. The silica of cogon grass was extracted by washing dry cogon grass using 3% HCl before the burning process, and the ashing temperatures were 500°C, 600°C, and 700°C with a temperature increasing rate of 1°C/minute. The SEM-EDX results showed that silica of cogon grass has an irregular shape and a purity of 99.99%. the XRD results showed that silica has an amorphous phase with peaks at 2θ = 21-23°. The electrical analysis showed that the higher the ashing temperature led to the higher the conductance, the conductivity, and the dielectric constant on silica of cogon grass. Besides, the higher the frequency, the higher the electrical conductance and conductivity, but the lower the dielectric constant of silica. Based on the electrical conductivity, the silica of cogon grass was in the range of semiconductor materials.

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“…It mainly consists of organic materials like hemicellulose, cellulose, and lignin (75-90 wt.%). The ash (17-20 wt.%) produce by burning the husk underneath controlled conditions including high pure silicon oxide, that represents 90 wt.% of that ash.Consequently, the husks of rice areconsidered as natural stocks to preparefor silica-based adsorbents or catalyst supports [1][2][3]. The biodiesel, the future's fuel, has been considered as a decent alternative forfossil fuels, like diesel.Recently, numerous studies have been given to this renewable fuel [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The influence of PO4 to bio-silica catalyst on synthesis benign additive fuel

2019

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F UEL additive solketal can be produced through acetalization reaction of biodiesel byproduct (glycerol) and acetone. This reaction was conducted over acidified silica derived from sustainable bioresource rice husk in a batch reactor under the solvent-free condition. The chemical and structural properties of the prepared catalyst were studied by X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), N 2 adsorption/desorption isotherms, temperature-programmed desorption of ammonia (NH 3-TPD) and scanning electron microscope (SEM). Based on this paper, the optimized conditions using 15% phosphoric acid acid ifiedsilica extracted from rice huskash (10 wt.% PO 4 loaded SiO 2) are 50°C (lower temperature) with the molar ratio of acetone: glycerol = 2. Reusability test used to examine the stability of the catalytic activity was investigated. This effort is a serious step for development and taking apart of solketal as the main product from glycerol and acetone by using waste resources.

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Biosilica Properties from Rice Husk using Various HCl Concentrations and Frequency Sources

Cited by 12 publications

References 20 publications

Kinematics and dynamics of the ballistic impact behavior for an oil palm empty fruit bunch fiber reinforced bio-composite

Kinematics and dynamics of the ballistic impact behavior for an oil palm empty fruit bunch fiber reinforced bio-composite

Purity, Morphological, and Electrical Characterization of Silicon Dioxide from Cogon Grass (Imperata cylindrica) Using Different Ashing Temperatures

The influence of PO4 to bio-silica catalyst on synthesis benign additive fuel

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