Analysis of Mineralogical Component of Palm Oil Fuel Ash with or without Unburned Carbon

Abstract

The purpose of this paper is to investigate the mineralogical components of palm oil fuel ash (POFA) with or without unburned carbon by using semi-quantitative X-ray diffraction (XRD). Original POFA taken from palm oil mill was ground in ball mill, producing ground POFA (GPOFA). Unburned carbon was removed by heating the GPOFA at 500 °C for 1 h, producing treated POFA (TPOFA). Neither glassy phase crystallization nor agglomeration of GPOFA particles occurred during the heat treatment. The content of crystalline phase and glassy phase in GPOFA or TPOFA was determined using semi-quantitative XRD analysis internal standard method. The results showed that GPOFA and TPOFA contained 67.22% and 73.89% of glassy phase, respectively, which could be used as pozzolanic materials. The presence of P2O5, K2O and Na2O in POFA was the reason of reducing the melting point of POFA in boiler.

Fracture and tensile characteristics of engineered cementitious composites containing POFA

“…The content of amorphous phase was 72 . 53%, which is close to the results reported by Chandara et al (2011) and Kroehong et al (2012). In the mill, the palm wastes were burned at temperature 800-10008C.…”

Filler effect and pozzolanic reaction of ground palm oil fuel ash

“…Chandara et al [11] determined the crystalline phase and glassy phase of palm oil fuel ash using semi-quantitative XRD analysis internal standard method and showed that palm oil fuel ash contained 67.22% of glassy phase which could be used as a pozzolanic material. Table 2 shows the physical properties of Type I Portland cement, ground POFA, and ground river sand.…”

Properties of Agro-Industrial Aerated Concrete as Potential Thermal Insulation for Building

“…The silica or silicon oxide (SiO 2 ) is perhaps the most essential substance which is found in POFA and contains most like more then 40% [18]. The amount of crystalline phase also can be found in POFA [10]. …”