FLY ASH WASTE FOR SILICA SYNTHESIS USING THE CAUSTIC METHOD

Zamrony Affandi; Almayla Azzahra; Aura Lathifah; Allbar Wicaksono; Cornelius Yudha

doi:10.20961/esta.v4i1.109721

FLY ASH WASTE FOR SILICA SYNTHESIS USING THE CAUSTIC METHOD

Zamrony Affandi, Almayla Azzahra, Aura Lathifah, Allbar Wicaksono, Cornelius Yudha

Abstract

Fly ash is a waste material produced from coal combustion. Generally, coal combustion produces 80% fly ash waste and 20% bottom ash, where the utilization of fly ash waste only reaches 20% of the total fly ash waste produced. Fly ash has chemical content such as SiO2; Al2O3; Fe2O3; with a percentage of 64.97%; 26.64%; 5.69%, respectively [1]. With this content, fly ash is often used to make silica. In this study, silica synthesis used the caustic method (base solvent) with a mass ratio of fly ash (25, 30, 35) grams to determine the effect of fly ash mass on the resulting yield. The solvent used was 3M NaOH, in addition, silica testing was also carried out such as adsorption capacity testing and silica morphology testing. The adsorption capacity test was used to evaluate the silica adsorption capacity, the morphology test was used to determine the diameter and size of silica. The results of the study showed that variations in fly ash mass affected the yield and physical and chemical properties of the silica produced.

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References

Aisah, S., Sulistiyo, A., & Kimia, J. (2018). Synthesis of Silica Gel Based on Coal Fly Ash from Paiton Power Plant as Adsorbent of Rhodamine B.

Putra, EAP, Makmur, A., Malau, A., Trans Sulawesi, J., & Morowali Central Sulawesi, K. (2022). Effect of Time and NaOH Concentration on Silica (SiO2) Extraction from Coal Fly Ash Waste (Vol. 1, Issue 2).

Thahir, R., Widiyanti, E., Katu, I., Neneng, D., Idar, N., Jurusan, D., Kimia, T., Negeri, P., Pandang, U., & Jurusan, M. (2021). Extraction and Analysis of Silica Characteristics from Rice Husk .

Majid, BA, Sumarna, D., & Konong, I. (2023). Experimental Test of K-300 Concrete Compressive Strength Using Kali Oba Material and Fly Ash Substitution (Coal Fly Ash). INTER TECH , 1 (2), 27–29. https://doi.org/10.54732/i.v1i2.1059

Ramadhani, I., Oktavia, B., Putra, A., & Sanjaya, H. (2021). Determination of Optimum Conditions for the Formation of Sodium Silicate (Na 2 SiO 3 ) Using Natural Silica and Sodium Hydroxide (NaOH) as Basic Materials. Chemistry Journal , 10 . http://ejournal.unp.ac.id/index.php/kimia

DOI: https://doi.org/10.20961/esta.v4i1.109721