An Improved Method for Production of Silica (SiO2) from Palm Oil Fuel Ash (POFA) using Acidic Wash Treatment (HCl)

Sani Garba Durumin iya, Mohamed Zaky Noh, Siti Noraiza Ab Razak, Norazreen sharip, Nur Ashikin Ismail, Nur Azureen Alwi Kutty


Palm oil is derived from tropical palm tree that is easily cultivated in tropical countries like Malaysia, Thailand and Brazil. Palm oil fuel ash (POFA) is a by-product from palm oil industry that is produced in large quantity (approximately 4 million tons annually in Malaysia). This paper presents an improved method for production of silica from POFA. Untreated POFA was dried in an oven at 110 ºC for 24hours, it was then grinded in a ball mill for 12 hours at 250 rev/min to reduce the particle size, the powder is dispersed in 1 molar of HCl acid and stirred constantly for 30 min using electric shaker. X-ray fluorescence analysis shows that, POFA treated with acid shows the existence of thirteen chemical elements and the chemical composition of SiO2 increases after the acidic wash from 15.90 wt% to 43.70 wt%. The percentage difference for SiO2 is shown to be 175%. Based on the result of this study, it can be concluded that acid wash treatment is suitable for production of silica from POFA.


Silica, Palm Oil Fuel Ash (POFA), XRD, XRF, SEM

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K. Muthusamy, N. W. Kamaruzzaman, M. A. Zubir, M. W. Hussin, A. R. M. Sam, and A. Budiea, “Long Term Investigation on Sulphate Resistance of Concrete Containing Laterite Aggregate,†ARPN J. Eng. Appl. Sci., 11, no. 4, pp. 2406–2411, (2016)

K. Muthusamy, N. Zamri, and M. Amirulkhairi, “Effect of mixing ingredient on compressive strength of oil palm shell lightweight aggregate concrete containing palm oil fuel ash,†Procedia Eng., 125, pp. 804–810, (2015)

P. Chindaprasirt, S. Rukzon, and V. Sirivivatnanon, “Resistance to chloride penetration of blended Portland cement mortar containing palm oil fuel ash, rice husk ash and fly ash,†Constr. Build. Mater., 22, no. 5, pp. 932–938, (2008)

C. J. Brinker and G. W. Scherer, Sol-gel science : the physics and chemistry of sol-gel processing. Academic Press, 1990.

L. Sun and K. Gong, “Silicon-based materials from rice husks and their applications,†Ind. Eng. Chem. Res., 40, no. 25, pp. 5861–5877, (2001)

U. Kalapathy, A. Proctor, and J. Shultz, “An Improved Method for Production of Silica From Rice Hull Ash,†Bioresour. Technol., 85, no. 3, pp. 285–289, (2002)

S. Pourakbar, A. Asadi, B. B. K. Huat, and M. H. Fasihnikoutalab, “Stabilization Of Clayey Soil Using Ultrafine Palm Oil Fuel Ash (POFA) And Cement,†Transp. Geotech., 3, pp. 24–35, (2015)

M. Z. Noh, H. U. Jamo, and Z. A. Ahmad, “Effect of temperature and composition of palm oil fuel ash on compressive strength of porcelain,†Appl. Mech. Mater., 660, pp. 173–177, (2014)

H. U. Jamo and M. N. N. Maharaz, “Influence of Mould Pressure and Substitution of Quartz By Palm Oil Fuel Ash on the Hardness of Porcelain Body,†Sci. World J., 9, no. 4, pp. 23–28, (2014)


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