Extraction of Silica from Bengkulu Beach Sand using Alkali Fusion Method

Ishmah, Soraya Nur; Permana, Muhamad Diki; Firdaus, M. Lutfi; Eddy, Diana Rakhmawaty

doi:10.33369/pendipa.4.2.1-5

Cited by 29 publications

(26 citation statements)

References 11 publications

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“…From the analysis, the sample was dominated by silicate with value 23.37%, followed by aluminium, and sulfur. Compared to other mineral sites, the mineral rock from Kalirejo village is almost equal compared to previous research that reported silica content from Bali and Lombok were 19 and 21 %, respectively (Ishmah et al, 2020).…”

Section: Raw Materials Analysiscontrasting

confidence: 58%

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Effect of particle sizes and sodium hydroxide concentrations on silica extraction from minerals obtained in Kalirejo village, Kokap, Kulonprogo, Yogyakarta

Setyoningrum¹,

Nandari²,

Murni³

et al. 2021

Eksergi

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Silica is mainly used in the production of rubber, glass, cement, glass, ceramics, paper, cosmetics, electronics, paintings, healthcare and other industries. Kalirejo village has a potential abundant resource of silica minerals. However, to refine it, high cost of extraction should be done to obtain high purity of silica. Different refining methods influence different purity of the silica. The purpose of this research was to study the refining process of mineral rock silica from Kalirejo village, Kokap, Kulonprogo by emplying simple and cheap solid-liquid extraction. Extraction was done by varying the particle size at 100 - 200 mesh, while NaOH concentration was varied in 0.5 N to 5 N. Results showed that minerals taken from Kalirejo village was dominated by silica (23%). The largest extract (4.89 gram) was obtained at 200 mesh and using NaOH 5 N with yield of 15.07%. Higher NaOH and higher particle size enhanced the extraction yield. This finding could help small communities in Kalirejo village to enhance the quality of silica by employing simple and cheap extraction process.

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Section: Raw Materials Analysiscontrasting

confidence: 58%

“…According to previous researcher, silica rock can be simply extracted by using NaOH to create a solution of sodium silicate (Ishmah, et al, 2020). The solution is mixed with HCl to precipitate sodium silicate.…”

Section: Introductionmentioning

confidence: 99%

Effect of particle sizes and sodium hydroxide concentrations on silica extraction from minerals obtained in Kalirejo village, Kokap, Kulonprogo, Yogyakarta

Setyoningrum¹,

Nandari²,

Murni³

et al. 2021

Eksergi

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“…4(b). The dominant and strong absorption peak found in wavenumber 1,080-1,100 cm -1 is the Si-O-Si bond's asymmetrical stretching [52]. The peak around 1,600-1,650 cm -1 and 3,400-3,460 cm -1 denotes the bending and stretching vibration of the O-H bond of molecular water.…”

Section: Ftir Analysismentioning

confidence: 99%

Efficient degradation of doxycycline and ofloxacin in an aqueous environment using Fe and Cu doped TiO2-SiO2 photocatalyst under sunlight

Rani

Garg

Singh

2021

Environmental Engineering Research

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Several drugs have sparked interest as potential COVID-19 treatment options. Doxycycline (DOX) has been widely used with other potential agents to reduce COVID-19-induced inflammation. DOX and OFLX, both well-known antimicrobial and anti-inflammatory drugs, were chosen as model pollutants. Fe, Cu-codoped TiO2-SiO2 was synthesised as a novel photocatalyst active under sunlight irradiation to treat model pollutants. The synthesised catalyst samples were meticulously characterised using various techniques to evaluate their morphological, optical, and structural properties. The results of BET analysis showed that the TSFC1 sample has a large specific surface area of 288 m 2 g -1 . Maximum degradation of DOX and OFLX (about 98%) was achieved with the TSFC1 catalyst. The photocatalytic reusability was investigated for up to seven successive cycles, and the composite particles maintained their high photodegradation activity for DOX and OFLX. TFSC1 composite, in particular, demonstrated high catalytic activity as well as excellent recovery potential, and its combination with solar light, silica, and dopants can be introduced as a promising strategy for efficiently destroying both DOX and OFLX antibiotics. This study highlights the feasibility of hybridising doped dual semiconductor nanostructures in implementing solar light-powered pharmaceutical wastewater degradation.

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“…The peak presence at wave 798 cm −1 indicates the vibrational strain of the Si-OH bond (silanol) in the amorphous SiO 2 structure. The absorption peak at wave number 475 cm −1 is caused by O-Si-O (siloxy) bonding vibrations [11]. The peaks observed at 667-711 cm −1 are ascribed to the Ti-O and O-Ti-O absorption bands [15].…”

Section: Characterization Of Catalystmentioning

confidence: 99%

“…Eddy et al [9] extracted silica successfully from Palangkaraya beach sand, Indonesia with a benefit of 91.19% and Munasir et al [10] extracted silica successfully from Tuban beach sand, Indonesia, reaching 98.9% gain. In addition, Ishmah et al [11] and Firdaus et al [12] have succeeded in extracting silica from Bengkulu beach sand, Indonesia, by 97.3% and 99.5%, respectively. In this research, we evaluated the extraction of silicon dioxide (SiO 2 ) from beach sand precursors and subsequently composite with titanium dioxide (TiO 2 ) as a photocatalyst for decreasing the concentrations of Cr(VI) and Pb(II).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Titanium Dioxide/Silicon Dioxide from Beach Sand as Photocatalyst for Cr and Pb Remediation

et al. 2020

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Heavy metals are non-biodegradable and have a high toxicity effect on microorganisms which makes their presence in the environment extremely dangerous. The method of handling heavy metal waste by photocatalysis techniques using TiO2/SiO2 composite showed a good performance in reducing harmful pollutants. In this study, SiO2 from Bengkulu beach sand, Indonesia, was used as a support material for TiO2 photocatalyst to remove Cr(VI) and Pb(II). SiO2 was obtained through leaching techniques using NaOH as a solvent. The TiO2/SiO2 composite photocatalyst was synthesized using a solvothermal method at 130 °C and then characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and a particle size analyzer (PSA). Based on the XRD diffractogram, the synthesized TiO2 showed the anatase structure while the SiO2 showed the amorphous structure. The Ti–O–Si bond is defined in the infrared (IR) spectra, which indicates that the relationship between TiO2 and SiO2 is a chemical interaction. The results of SEM and PSA characterizations show agglomerated spherical (round) particles with a mean particle size of 616.9 nm. The TiO2/SiO2 composite of 7:1 ratio showed the highest photocatalytic activity after 180 min of ultraviolet (UV) irradiation, with a concentration-decrease percentage of 93.77% and 93.55% for Cr(VI) and Pb(II), respectively.

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Extraction of Silica from Bengkulu Beach Sand using Alkali Fusion Method

Cited by 29 publications

References 11 publications

Effect of particle sizes and sodium hydroxide concentrations on silica extraction from minerals obtained in Kalirejo village, Kokap, Kulonprogo, Yogyakarta

Effect of particle sizes and sodium hydroxide concentrations on silica extraction from minerals obtained in Kalirejo village, Kokap, Kulonprogo, Yogyakarta

Efficient degradation of doxycycline and ofloxacin in an aqueous environment using Fe and Cu doped TiO2-SiO2 photocatalyst under sunlight

Synthesis of Titanium Dioxide/Silicon Dioxide from Beach Sand as Photocatalyst for Cr and Pb Remediation

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