Comparative analysis of the energy content of diverse fuels performed via thermogravimetric investigations

Abstract

Thermogravimetry is a well-known analysing technique in which the mass of a substance is monitored as a function of temperature variation by time, and as a sample specimen being subjected to a scheduled temperature program, in a controlled atmosphere. The method is based on measuring sensors for the mass loss, in the controlled-atmosphere furnace, and on a temperature programmer, all interfaced to a computer. It is also known as thermogravimetric analysis (TG) or derived thermogravimetric analysis (DTG). Kinetic parameters, stability, and changes in the composition are among the most important results obtained upon performing such analysis. The article focuses on three different analyses run upon three different fuels: a fossil one (coal), a classic biomass (renewable fuel), and waste poultry manure. The conclusion indicates that all three fuels illustrate important energy content, showing specific points in the TG and DTG curves, which are analysed in detail. The similarities and differences are also pointed out. Additionally, the techniques used are described, considering their implication for complex waste biomasses, which might be subject of biogas production. The technique is recommended in addition to classic thermal analysis and heating value determination.