EXTRACTION SILICA FROM RICE HUSK WITH NaOH LEACHING AGENT WITH TEMPERATURE VARIATION BURNING RICE HUSK

Daulay, Amru; Andriayani, .; Marpongahtun, .; Gea, Saharman

doi:10.31788/rjc.2021.1436351

Cited by 11 publications

(5 citation statements)

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“…XRF analysis was performed to identify chemical components of the treated RHA produced at the incineration temperature of 600°C as it can be implied that, according to Bakar et al [14], the temperature will result in amorphous silica with purity above 99%. Result of the analysis as shown in Table 2 reveals that the mass percentage of SiO2 of 91% is the highest among all chemical components, which is in agreement with the result of Daulay et al [15]. Silica Extraction from Rice Husk Ash.…”

Section: Resultssupporting

confidence: 87%

Effect of Treatment and Incineration Temperature on Extraction of Silica from Rice Husk for Cement Replacement in Concrete

Azlan,

Farhan,

Wahab

et al. 2023

7th International Conference on Recent Advances in Materials, Minerals and Environment (RAMM)

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Utilization of rice husk ash (RHA) as a pozzolanic material is a viable solution for reducing air pollution that is caused by open incineration of rice husk. Treatment of the rice husk with high-concentration acid and subsequently subjecting the treated rice husk to controlled incineration at high temperature can produce RHA that contains silica of a high purity, which can contribute to a high pozzolanic reactivity of concrete. However, the dependence of high-concentration acid and high incineration temperature will have an adverse effect on the environment. Therefore, in the present study, effect of treatment and incineration temperature on extraction of silica from RHA was investigated by conducting analytical and compressive strength tests on concrete samples. Raw and treated rice husks were incinerated for an hour at 400, 500 and 600°C to produce untreated and treated RHA, respectively. Hydrothermal synthesis was performed to execute gelation of silica from the RHA. The silica gel was converted into powder and then incorporated into concrete mixes for preparation of samples. The samples comprise the control sample, which does not contain any of the silica extracted from the RHA, and those that contain 5% silica from the untreated and treated RHA. Findings indicate that the treatment was necessary to produce concrete with adequate compressive strength relative to that of conventional concrete. Incorporation of 5% silica from treated RHA at the incineration temperature of 600°C resulted in the highest compressive strength of 6.44 MPa, which is an increase of 8.5% from that of the conventional concrete.

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Section: Resultssupporting

confidence: 87%

Effect of Treatment and Incineration Temperature on Extraction of Silica from Rice Husk for Cement Replacement in Concrete

Azlan,

Farhan,

Wahab

et al. 2023

7th International Conference on Recent Advances in Materials, Minerals and Environment (RAMM)

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“…All products of mesoporous silica showed an absorption peak between 3433 cm −1 to 3447 cm −1 that was widened due to OH (Si–OH). 31 The other absorption peaks at 1089 cm −1 to 1118 cm −1 are strong due to the asymmetric stretching of Si–O–Si ( υ as Si–O–Si), 32 and the features at 808 cm −1 to 836 cm −1 are due to the presence of symmetrical groups Si–O–Si ( υ is Si–O–Si). 33 The features in the wavenumber range of 456–471 cm −1 is due to Si–O.…”

Section: Resultsmentioning

confidence: 99%

Stability of mesoporous silica using ricinoleic methyl ester as a template with the addition of HCl and application of Cd²⁺ adsorption optimized by Box–Behnken design

et al. 2023

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“…Metode-metode ekstraksi yang dilakukan sangat bergantung pada tingginya kelarutan silika amorf dalam larutan alkalis seperti KOH, Na2CO3, atau NaOH serta pengendapannya menggunakan asam seperti asam klorida, asam sitrat, asam asetat, atau asam oksalat [4]. Umumnya kegiatan pelarutan silika dilakukan dengan melalui berbagai proses pretreatment yang rumit pada bahan baku seperti direndam dengan larutan asam organik kuat serta dibakar dalam furnace pada temperatur diantara 600-800 o C [5][6][7].…”

Section: Pendahuluanunclassified

Karakterisasi Kelarutan Silika dari Fly Ash Kelapa Sawit dalam Larutan Basa Kuat (NaOH) dan Asam Lemah (C6H8O7)

Jayanti

Ramzi²,

Alfitra³

2022

equilibrium

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Pertumbuhan industri pabrik kelapa sawit masih cukup potensial di Indonesia, kajian produk samping hasil produksi pabrik kelapa sawit ini masih belum diolah dengan optimal. Pemanfaatan fly ash sebagai salah satu produk samping masih sangat perlu dikembangkan. Silika merupakan komposisi penyusun fly ash kelapa sawit yang sangat diminati saat ini karena memiliki potensi aplikasi dalam berbagai tujuan seperti pengolahan limbah, material semikonduktor, dan bahan aditif pertanian. Penelitian pengolahan silika dari abu hasil proses pembakaran tidak terlepas dari metode ektraksi yang sangat bergantung dari karakteristik kelarutan silika terhadap pelarutnya. Penelitian ini bertujuan untuk memberikan informasi karakteritik kelarutan silika yang berasal dari fly ash pabrik kelapa sawit dalam larutan berupa basa kuat (NaOH) dan asam lemah (C6H8O7). Aktivitas kelarutan silika dalam pelarut asam dan basa dilakukan dengan memvariasikan konsentrasi pelarut yaitu 1 M, 2 M, dan 3 M. Proses pelarutan silika dilakukan pada temperatur 60oC dalam waktu 60 menit. Karaketrisasi fly ash dilakukan dengan menggunakan instrumen XRD, XRF, dan SEM yang menunjukkan bahwa senyawa penyusun utama fly ash adalah CaO 68,894% dan SiO2 19,189 % yang terkandung dalam mineral kalsit, portlandite, dan kuarsa dengan morfologi yang heterogen serta ukuran partikel diantara 200 μm – 300 μm. Hasil pelarutan menunjukkan bahwa kelarutan silika tertinggi diperoleh dalam pelarut asam sitrat 2 M yaitu sebesar 26,35 %.

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EXTRACTION SILICA FROM RICE HUSK WITH NaOH LEACHING AGENT WITH TEMPERATURE VARIATION BURNING RICE HUSK

Cited by 11 publications

References 0 publications

Effect of Treatment and Incineration Temperature on Extraction of Silica from Rice Husk for Cement Replacement in Concrete

Effect of Treatment and Incineration Temperature on Extraction of Silica from Rice Husk for Cement Replacement in Concrete

Stability of mesoporous silica using ricinoleic methyl ester as a template with the addition of HCl and application of Cd²⁺ adsorption optimized by Box–Behnken design

Karakterisasi Kelarutan Silika dari Fly Ash Kelapa Sawit dalam Larutan Basa Kuat (NaOH) dan Asam Lemah (C6H8O7)

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EXTRACTION SILICA FROM RICE HUSK WITH NaOH LEACHING AGENT WITH TEMPERATURE VARIATION BURNING RICE HUSK

Cited by 11 publications

References 0 publications

Effect of Treatment and Incineration Temperature on Extraction of Silica from Rice Husk for Cement Replacement in Concrete

Effect of Treatment and Incineration Temperature on Extraction of Silica from Rice Husk for Cement Replacement in Concrete

Stability of mesoporous silica using ricinoleic methyl ester as a template with the addition of HCl and application of Cd2+ adsorption optimized by Box–Behnken design

Karakterisasi Kelarutan Silika dari Fly Ash Kelapa Sawit dalam Larutan Basa Kuat (NaOH) dan Asam Lemah (C6H8O7)

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Stability of mesoporous silica using ricinoleic methyl ester as a template with the addition of HCl and application of Cd²⁺ adsorption optimized by Box–Behnken design