Zarina YAHYA*, Mohd Mustafa Al Bakri ABDULLAH, KAMARUDIN Hussin, Khairul Nizar ISMAIL, Andrei Victor SANDU*, Petrica VIZUREANU, Rafiza ABD RAZAK<br>Chemical and Physical Characterization of Boiler Ash from Palm Oil Industry Waste for Geopolymer Composite

Zarina YAHYA, Mohd Mustafa Al Bakri ABDULLAH, KAMARUDIN Hussin, Khairul Nizar ISMAIL, Andrei Victor SANDU, Petrica VIZUREANU, Rafiza ABD RAZAK
Chemical and Physical Characterization of Boiler Ash from Palm Oil Industry Waste for Geopolymer Composite

Abstract:

The characterizations of boiler ash waste from waste of palm oil industry were performed. The boiler ash was obtained from the boiler in the palm oil processing factory. The chemical and physical characterization has been analyzed using X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), particle size distribution, Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM). From the XRF analysis, the major component of boiler ash is silica oxide (SiO2), followed by calcium oxide (CaO) and ferum oxide (Fe2O3). In order to produce geopolymer, the raw material needs to contain enough SiO2 and aluminium oxide (Al2O3). However, the content of Al2O3 is only 3.7% but it contained high amount of SiO2 (40.60%) and CaO which may influence the strength of the geopolymer. The median particle size of boiler ash was comparable with fly ashes, morphology of boiler ash showed irregular particle size and shape. The surface particle of boiler ash look similar with calcined kaolin but no plate like structure was observed. Hence, we believe that this material has a potential use as raw material for geopolymer production. Keywords: boiler ash, physical, chemical, characterization, geopolymer

Issue: 2013, Volume 64, Issue 12

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