Scaling Up of the Pyrolysis Process to Produce Silica from Rice Husk

Casnan, Casnan; Noor, Erliza; Hadjomidjojo, Hartrisari; Irzaman, Irzaman; Rohaeti, Eti

doi:10.5614/j.eng.technol.sci.2019.51.6.1

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…Based on previous research, the silica content in rice husk ash is 90-98% dry weight [4]. The second highest silica content is from bamboo leaf ash, which is 75.9% [5], while straw ash has a silica content of 75% [6].…”

Section: Introductionmentioning

confidence: 99%

G-Optimal Design of Non-Linear Model to Increase Purity Levels of Silicon Dioxide

Wulandari

Erfiani

Irzaman

et al. 2023

BAREKENG: J. Math. & App.

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Silicon Dioxide (SiO2) is one of the most abundant minerals found on earth. SiO2 is widely used in various fields, so its availability as a finite natural resource diminishes. A purity procedure can raise the purity of low-quality silica by altering the temperature and rate of temperature rise. This study aims to obtain the best design for increasing SiO2 levels—the G-optimal design on a non-linear model using the Variable Neighborhood Search (VNS) algorithm. The VNS algorithm employs two types of neighborhoods, one acquired by replacing one design point with a candidate set and the other by replacing two design points with two points in the candidate set. The model used to increase silicon dioxide's purity is a non-linear model that follows the exponential decay distribution. The best design points obtained from the G-optimal design on the relationship between temperature (oC) and the rate of temperature increase (oC/min) 800 oC to 900 oC is a pair of points 800 oC and 1,67 oC /min, 800 oC and 2,17 oC/min, 815 oC and 2,50 oC/min, 825 oC and 2,00 oC/min, 845 oC and 2,34 oC/min, 895 oC and 3,34 oC/min 900 oC and 3,50 oC/min with a G-efficiency of 96,41%.

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Section: Introductionmentioning

confidence: 99%

G-Optimal Design of Non-Linear Model to Increase Purity Levels of Silicon Dioxide

Wulandari

Erfiani

Irzaman

et al. 2023

BAREKENG: J. Math. & App.

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“…However, utilizing SiO 2 in natural minerals is highly inefficient and might result in environmental problems when stored indefinitely (Abdurrahman et al, 2020). Therefore, SiO 2 from plant materials is in great demand for natural mineral Several studies related to the extraction of SiO 2 from biomass using rice husks (Sintha et al, 2017;Irzaman et al, 2020;Casnan et al, 2019), rice straw (Nazopatul et al, 2018;Hapsari et al, 2020), bamboo leaves (Irzaman et al, 2018;Aminullah et al, 2018), bagasse (Adli et al, 2018), and coir coconut (Anuar et al, 2020) have been reported. The sol-gel method extracted SiO 2 in those studies, followed by hydrolysis and subsequent condensation operations.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Varying the HCl Solution on the Purity, Morphological, and Electrical Properties of Silicon Dioxide Extracted from Rice Straw

Har¹,

Palupi²,

Umam³

et al. 2022

JST

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Rice straw is a waste product from rice manufacturing that contains cellulose (32–47%), hemicellulose (19-27%), lignin (5–24%), and ash (13–20%). The ash form consists of a large percentage of silicon dioxide (SiO2) with widespread use in the industrial field. The extraction of silicon dioxide has been conducted using the sol-gel and ashing method combined with the leaching process using an acid solution such as hydrochloric acid (HCl) at a concentration of 3%. In using HCl with a concentration of 3%, impurities are often found in the SiO2 sample. Therefore, this study uses the leaching method with HCl of several variations (3%, 5%, and 7%). By raising the concentration of HCl in this process, the quality of SiO2 without impurities is increased. The results indicate that increasing the concentration of HCl can significantly lower the sample’s impurity content. In the 3% treatment, impurities were found in the form of Carbon and Calcium. The treatment obtained no impurities using 5% and 7% HCl concentrations. As a result, the highest purity of SiO2 obtained was 89.31% in the 5% HCl treatment. The sample treated with 5% HCl was in the semiconductor region and exhibited an amorphous structure.

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“…Rice husk ash contains approximately 80% to 90% SiO2 [3]. Casnan, et al (2019) reported that scaled-up production using pyrolysis could produce rice husk silica with 63.99% to 82.74% purity [4]. On the other hand, the sol-gel method using a technical grade solvent developed by Setyawan, et al (2019) yielded 62.83% of rice husk silica nanoparticles with 86.17% purity [5].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Silica Nanoparticles from Rice Husk as Influenced by Surface Modification with Used Solvent Containing Silane

Wahyuningsih

Yuliani

Hoerudin

2021

J. Eng. Technol. Sci.

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Silica extracted from rice husk (silica nanoparticles, Si-NP RHA) has great potential for industrial use, particularly as filler in the rubber industry. However, silica is poorly dispersed in the matrix and needs to be modified by a silane linking agent (bis-(3-triethoxysilylpropyl) tetrasulfane (TESPT)) to improve its mixing properties. As a result, a large amount of used solvent containing silane TESPT is produced. This study aimed to evaluate the surface modification of silica nanoparticles from rice husk employing this used solvent and to characterize the particles’ physical properties. Silica nanoparticles were extracted from rice husk using a sol-gel method. FTIR spectography demonstrated that the TESPT on fresh solvent and the used solvent were successfully grafted onto the surface of Si-NP RHA. Si-NP RHA modified by Two Step Modification (TSM) employing used solvent had strong absorption peaks at wave numbers of 2927.94 cm-1 and 1446.61 cm-1, which are associated with vibration of the ‑CH2 group and deforming vibration of the -C-H group in TESPT compounds. Likewise, Si-NP RHA modified with One Step Modification (OSM), either using fresh solvent or the used solvent, exhibited absorption peaks at wave numbers 2935.66 cm-1 and 1404.18 cm-1. The result showed that the used solvent still effectively modified the silica nanoparticle surface.

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Scaling Up of the Pyrolysis Process to Produce Silica from Rice Husk

Cited by 6 publications

References 15 publications

G-Optimal Design of Non-Linear Model to Increase Purity Levels of Silicon Dioxide

G-Optimal Design of Non-Linear Model to Increase Purity Levels of Silicon Dioxide

The Effect of Varying the HCl Solution on the Purity, Morphological, and Electrical Properties of Silicon Dioxide Extracted from Rice Straw

Characteristics of Silica Nanoparticles from Rice Husk as Influenced by Surface Modification with Used Solvent Containing Silane

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