Production and Characterization of Precipitated Silica From Palm Oil Mill Fly Ash Using Co2 Impregnation and Mechanical Fragmentation

Utama, Panca Setia; Yamsaengsung, Ram; Sangwichien, Chayanoot

doi:10.1590/0104-6632.20190361s20170458

Cited by 20 publications

(10 citation statements)

References 23 publications

(24 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The XRD analysis results showed in graph Figure 2 indicated that the silica precipitated sample was dominated by the amorphous phase with the broadening of the peak centered at a 2Ɵ between 20-30°. This phase had the same type as silica precipitates that had been produced from natural materials of quartz sand in previous studies [6] as well as from bio resources like palm oil mill fly ash [22].…”

Section: Characterization Of Silica Precipitate As Raw Materials For ...mentioning

confidence: 90%

The effect of using solvent medium in the ultrasonication of silica precipitates

Febriana

Angelina

Mayangsari

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

In this study, further processing of silica precipitated from sodium silicate was carried out using an ultrasonic transducer. The ultrasonication process was carried out with the aim to obtain smaller particles and uniform distribution of silica precipitated. The ultrasonication process was carried out using three solvents medium in water, ethanol, and ethylene glycol. The effect of solvents used on the distribution and particle size of silica precipitated was observed using Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX) and Particle Size Analyzer (PSA). From the results of observations using FE-SEM, it was shown that the ultrasonication of silica precipitates with water has the greatest influence on particle size and distribution. While the analysis using PSA did not show any size reduction due to the agglomeration between the particles. The smallest particle size that could be obtained from this process is about 17 nm with average value of 88 nm.

show abstract

Section: Characterization Of Silica Precipitate As Raw Materials For ...mentioning

confidence: 90%

The effect of using solvent medium in the ultrasonication of silica precipitates

Febriana

Angelina

Mayangsari

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…Though, this process is not a suitable means for modification carried out in the aqueous medium. Significantly, if organic molecules are involved as it will dissolve in the dissolution process [125]. Impregnating silica into the cellulose aerogel can generate material with better thermal stability and high hydrophobicity properties than unmodified cellulose aerogel alone [126].…”

Section: Impregnation Methodsmentioning

confidence: 99%

Synthesis of silica-cellulose aerogel derived from bagasse through impregnation and ambient pressure drying methods as thermal insulator

Silviana

Sa’adah

Deastuti

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

The trend of research and development of technological advancement in thermal insulators involves using renewable materials, selecting manufacturing processes that require the lowest possible energy, or using waste materials that may help subdue the reduction of petroleum reserves. This review discusses the potential substitution of petroleum by natural materials in thermal insulation manufacturing. This review presents an overview of the definition, properties, materials, and methods that can be used in the manufacture of thermal insulators based on results reported in the literature. Many materials are currently being investigated to produce thermal insulator such as cellulose. Cellulose fiber has a big potential to be used in the manufacture of thermal insulators because cellulose possesses many advantageous properties over petroleum-based polymers, i.e. biocompatibility, biodegradability, thermal stability, chemical stability, and low cost. Another material that may be used is silica, as it has high temperature resistance and low thermal expansion. Bagasse containing high cellulose and silica with the composition of 32-44% cellulose and 55.5%-70% silica. Therefore, bagasse proves appealing to be processed into thermal insulator. Aerogels are among the best thermal insulating materials known. This review proposes the impregnation method followed by the ambient pressure drying (APD) method to synthesize cellulose-silica aerogel. The impregnation of silica into cellulose aerogel will increase mechanical strength, flexibility, and the resulting silica-cellulose aerogel will be transparent with a very low thermal conductivity.

show abstract

“…The solution was further filtered to obtain silica gel and washed with hot distilled water to remove impurities. Finally, the silica gel was dried at 80 °C for 4 h ( Figure 1 ) [ 43 ].…”

Section: Methodsmentioning

confidence: 99%

Improvement of Fire Resistance and Mechanical Properties of Glass Fiber Reinforced Plastic (GFRP) Composite Prepared from Combination of Active Nano Filler of Modified Pumice and Commercial Active Fillers

et al. 2022

View full text Add to dashboard Cite

Glass fiber reinforced plastic (GFRP) composites have great potential to replace metal components in vehicles by maintaining their mechanical properties and improving fire resistance. Ease of form, anti-corrosion, lightweight, fast production cycle, durability and high strength-to-weight ratio are the advantages of GFRP compared to conventional materials. The transition to the use of plastic materials can be performed by increasing their mechanical, thermal and fire resistance properties. This research aims to improve the fire resistance of GFRP composite and maintain its strength by a combination of pumice-based active nano filler and commercial active filler. The nano active filler of pumice particle (nAFPP) was obtained by the sol–gel method. Aluminum trihydroxide (ATH), sodium silicate (SS) and boric acid (BA) were commercial active fillers that were used in this study. The GFRP composite was prepared by a combination of woven roving (WR) and chopped strand mat (CSM) glass fibers with an unsaturated polyester matrix. The composite specimens were produced using a press mold method for controlling the thickness of specimens. Composites were tested with a burning test apparatus, flexural bending machine and Izod impact tester. Composites were also analyzed by SEM, TGA, DSC, FT-IR spectroscopy and macro photographs. The addition of nAFPP and reducing the amount of ATH increased ignition time significantly and decreased the burning rate of specimens. The higher content of nAFPP significantly increased the flexural and impact strength. TGA analysis shows that higher ATH content had a good contribution to reducing specimen weight loss. It is also strengthened by the lower exothermic of the specimen with higher ATH content. The use of SS and BA inhibited combustion by forming charcoal or protective film; however, excessive use of them produced porosity and lowered mechanical properties.

show abstract

Production and Characterization of Precipitated Silica From Palm Oil Mill Fly Ash Using Co2 Impregnation and Mechanical Fragmentation

Cited by 20 publications

References 23 publications

The effect of using solvent medium in the ultrasonication of silica precipitates

The effect of using solvent medium in the ultrasonication of silica precipitates

Synthesis of silica-cellulose aerogel derived from bagasse through impregnation and ambient pressure drying methods as thermal insulator

Improvement of Fire Resistance and Mechanical Properties of Glass Fiber Reinforced Plastic (GFRP) Composite Prepared from Combination of Active Nano Filler of Modified Pumice and Commercial Active Fillers

Contact Info

Product

Resources

About