Pemanfaatan Limbah Sekam Padi Menjadi Silika Gel

Handayani, Prima Astuti; Nurjanah, Eko; Rengga, Wara Dyah Pita

doi:10.15294/jbat.v3i2.3698

Cited by 46 publications

(50 citation statements)

References 3 publications

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“…It was also found that teak wood scraps had more organic compound than rice husks. It could be caused by the fact that rice husks are mostly composed by silica at around 87-97% (Handayani et al, 2014;Trivana et al, 2015).…”

Section: Results and Discussion Rice Husks And Teak Wood Scraps Charamentioning

confidence: 99%

Characteristics of organic fertilizer derived from fleshing waste with teak (Tectona grandis) wood scrap

Griyanitasari¹,

Pahlawan²

2020

MKKP

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Section: Results and Discussion Rice Husks And Teak Wood Scraps Charamentioning

confidence: 99%

Characteristics of organic fertilizer derived from fleshing waste with teak (Tectona grandis) wood scrap

Griyanitasari¹,

Pahlawan²

2020

MKKP

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“…This fact suggests that SCGA washing using various HCl concentrations should be applied to achieve minimum contents of impurities. The silica extraction process was conducted using NaOH solution and then precipitated using HCl solution, adapting from the literature [14]. These mechanisms can be expressed by Equations 1 and 2 [15].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Silica Powder from Sugar Cane Bagasse Ash and Its Application as Adsorbent in Adsorptive-distillation of Ethanol-water Solution

et al. 2018

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In this study, sugarcane bagasse ash (SCBA) as waste from sugarcane factory was extracted into silica powder. This powder was then used as adsorbent for ethanol purification. Prior to used, the SCBA was washed using HCl solution. The silica extraction was conducted using various NaOH concentrations (0.5; 1; 1.5 and 2 mol/L) as well as extraction times (30, 60 and 90 minutes). After that the mixture was precipitated using HCl solution. The solution was filtrated through a paper filter and its solid particle was dried until its weight was constant. The particle was grounded and sieved using 18 mesh sieves. The silica powder obtained was analysed using FTIR and its result showed that the powder has silica functional groups. The silica yield increases with increasing of concentration of NaOH solution as well as extraction time. The highest silica yield (45.5% w/w) was achieved at 2 mol/L NaOH solution at 90 min. The surface area, pore diameter, and pore volume of silica powder were measured to be 407 m2/g, 3.81Å, and 2.76 dm3/g, respectively. From application of silica powder as adsorbent in adsorptive-distillation, ethanol concentration can reach 99.3% w/w which indicates azeotropic point can be passed.

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“…Metode pemisahan yang sering digunakan untuk memisahkan silika pada suatu bahan yaitu ekstraksi. Penelitian yang telah dilakukan terkait metode pemisahan ekstraksi yaitu ekstraksi pada abu sekam padi pada pembuatan nanosilika gel [9], ekstraksi alkali pada limbah sekam padi [10], ekstraksi Fitri, dkk./ Jurnal Teknik Kimia dan Lingkungan, Vol. 5, No.…”

Section: Pendahuluanunclassified

Penggunaan Tanah Vertisol Sebagai Bahan Baku Pembuatan Silika

2021

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Penggunaan silika sering digunakan dalam berbagai industri. Tujuan penelitian ini adalah untuk mengetahui kadar silika pada tanah vertisol di desa Bringinbendo. Penelitian ini dimulai dengan perendaman tanah pada aquadest, kemudian dicuci sebanyak 3 kali dan dikeringkan pada 110°C selama 24 jam. Selanjutnya dihaluskan hingga ukuran 250 mesh. Tahapan kedua yaitu sintesis silika dengan metode ekstraksi alkali dan diikuti presipitasi asam. 20 gram serbuk tanah diekstraksi dalam 100 ml NaOH (3, 5, dan 7M) sambil diaduk dan dipanaskan pada 80°C. Selanjutnya ditambahkan aquadest sebanyak 250 ml dan disaring menggunakan kertas Whatman. Filtrat dititrasi dengan HCl 5M sambil diaduk hingga pH mencapai 7. Suspensi dipertahankan pada temperatur kamar selama 24 jam, disaring, dan dicuci sebanyak 5 kali dengan aquadest kemudian dikeringkan. Hasil dari penelitian yaitu massa silika paling besar terdapat pada konsentrasi NaOH 7M pada waktu 1 jam yaitu 2,59 gram dan tanah vertisol di Desa Bringinbendo memiliki kadar silika dalam kategori sedang dengan persentase sebesar 77,7%.Silica is widely used in industry. The aim of this study was to determine the silica content in vertisol soil in Bringinbendo village. This research was started by soaking the soil in aquadest, then washed 3 times and dried it at 110 ° C for 24 hours. Furthermore, smoothed to 250 mesh size. The second stage is the synthesis of silica using the alkaline extraction method and the treatment of acids. 20 grams of soil powder were extracted in 100 ml NaOH (3, 5, dan 7M) while stirring and heated at 80 ° C. Next, 250 ml of aquadest was added and filtered using Whatman paper. The filtrate was titrated with 5M HCl while stirring until the pH reached 7. The suspension was maintained at room temperature for 24 hours, filtered, and 5 times with aquadest then dried. The results of the mass study were that the greatest silica was found in 7M NaOH concentration at 1 hour, namely 2.59 grams and vertisol soil in Bringinbendo Village had silica content in the medium category with a proportion of 77.7%.

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Pemanfaatan Limbah Sekam Padi Menjadi Silika Gel

Cited by 46 publications

References 3 publications

Characteristics of organic fertilizer derived from fleshing waste with teak (Tectona grandis) wood scrap

Characteristics of organic fertilizer derived from fleshing waste with teak (Tectona grandis) wood scrap

Synthesis of Silica Powder from Sugar Cane Bagasse Ash and Its Application as Adsorbent in Adsorptive-distillation of Ethanol-water Solution

Penggunaan Tanah Vertisol Sebagai Bahan Baku Pembuatan Silika

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