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Sintesis Natrium Silikat (Na2sio3) Menggunakan Fly Ash Pabrik Kelapa Sawit Sebagai Sumber Silika

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ABSTRACT
Sodium Silicate is a raw material that is widely used as a filler in the detergent,
soap and toothpaste industries. Sodium silicate can be synthesized from silica
(SiO2), which can be obtained through an extraction process from materials
containing silica such as sand, clear glass bottle waste and fly ash. In this study,
the synthesis of sodium silicate was carried out using silica from palm oil mill fly
ash. Initial analysis using X-Ray Fluorescence (XRF) obtained the content of
silicon oxide (SiO2) in fly ash reaching 59,69%. This study aims to determine the
effect of the molar ratio of NaOH reactants with fly ash, namely at a ratio = 3: 1,
4: 1 and 5: 1 on the yield and characteristics of the resulting sodium silicate. The
synthesis process begins with the preparation of fly ash through separation from
impurities, washing, drying, grinding and sieving. In the synthesis stage, 10 g of fly
ash powder was reacted with 4M NaOH solution according to the mole variation,
at a temperature range of 110°C while stirring with constant stirring at 600 rpm
for one hour. The resulting sodium silicate mixture was then separated into filtrate
and sediment by filtration. The sediment was then burned using a furnace at a
temperature of 400oC for 2 hours. Analysis using a Fourier Transform Infrared
(FTIR) spectrophotometer obtained a spectrum pattern of the synthesized sodium
silicate compound with typical silica absorption in the form of silanol group
absorption (≡Si-OH) and siloxane (≡Si-O-Si≡) respectively at wave numbers
779,70 cm-1, 876,71 cm-1, 1428,23 cm-1. The absorption that widens at the wave
number of 3500 to 2500 cm-1 is the absorption of -OH silanol (≡Si-OH) and H2O
and the highest yield is obtained at a mole ratio of NaOH and SiO2 of 3:1
Keywords: extraction, filler, fly ash, sodium silicate, silanol

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2207025596

Penerbit

Pekanbaru : Universitas Riau – F.TEKNIK – kimia., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2207025596

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

daus

Versi lain/terkait

Lampiran Berkas

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