Sago Pith Waste Ash as a New Alternative Raw Materials from Agricultural Waste

Abstract:

This paper investigates the properties of Sago pith waste ash (SPWA) from agricultural waste using different calcination temperatures (500°C, 700°C and 1000°C). Chemical characteristic of SPWA was first investigated by using X-ray fluorescence (XRF) followed by XRD analysis as a verification of the mineralogical phases present in the SPWAs. Based on the analysis, the major compositions of SPWA are found to be CaO and SiO₂ with other minor oxides such as MgO, Fe₂O₃ and Al₂O₃. Both CaO and SiO₂ are very significant oxides that can be used as an alternative binder in the synthesis of ceramic materials and geopolymer. Moreover, the presence of these oxides are consistent for SPWA calcined from 500°C, 700°C and 1000°C. Phase transformation such as quartz, calcite and magnesite that can be found in 500°C and 700°C whilst new phases such as wollastonite, fayalite and cristobalite in 1000°C proved that SPWA beneficial to be used as a new material resources especially in the ceramic and geopolymer applications.

• Periodical: Materials Science Forum (Volume 840)
• Pages: 389-393
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.840.389
• Online since: January 2016
• Authors: Mohamad Rohaidzat Mohamed Rashid, Megat Azmi Megat Johari, Zainal Arifin Ahmad*
• Keywords: Ash, CaO, Ceramic, Geopolymer, Sago Pith Waste, SiO₂

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