Solid Biofuel Characterization and Ash Properties of Acacia Mangium

Abstract

Acacia Mangium is a common industrial planted woody biomass in the tropical and subtropical climates. As an economically viable, agroforestry beneficial and environmentally sustainable bio-energy form, it has the potential to generate heat for thermochemical conversion systems. This article provides a comprehensive evaluation of its characteristics, physiochemical properties, ash composition and transformation phenomena. In accordance with the ISO/DIN guides for solid fuels, the standard methods were applied. The results of analyses solid biofuel showed the significant calorific value (19-20 MJ/kg); high volatile matter, relatively low ash content; and a low S content. X-ray analyskjhgis detected high values of Ca, K, Fe, Al and Si the ash-forming elements. Ash softening and fusion phenomena were observed, with heat generated continuously at constant rates (maintained at 550 ± 10 °C for 120 minutes and practically at 850 ± 10 °C for 240 minutes). The first signs of deformation were recorded at a temperature of approximately 1220 °C, with the melting point reached at 1310 °C, which was an advantage for a woody solid biofuel.

The impact of fuel delivery logistics on the cost of thermal energy on the example of biofuels boilers in Ukraine

“…Although biofuels are considered to be more environmentally friendly because they are considered CO 2 -neutral, their combustion produces emissions of other pollutants and ash. It is obvious that biofuel ash has a different composition and physicochemical properties than coal ash, but all ash dumps from solid fuel combustion have a negative impact on the environment and human health [31][32][33][34][35][36][37][38][39][40][41][42][43][44]. Further research should consider the ways and costs of handling pellet ash in the LCOH.…”

Solid Biofuels in Residential Heating Appliances and Related Air Pollution in Northern Italy

“…Nitrogen oxides, HCl, Cl 2 , alkali chlorides formation, gaseous compounds of SO 2 , SO 3 , and alkali sulfates released during the combustion process are important not only for emission control but also in corrosion processes [19][20]. Emission and environmental issues can be controlled with the adequate nitrogen, low chlorine and sulfur mass fractions reported in the wood logs and pellets used on a dry basis, with exceptional attention for False Acacia and hornbeam.…”