This paper presents a one dimensional steady state mathematical model for the simulation of a small scale fixed-bed gasifier. The model is based on a set of differential equations describing the entire gasification process of softwood pellets and is solved by a two step iterative method. The main features of the model are: homogeneous and heterogeneous combustion and gasification reactions, one...

Fast pyrolysis has been a subject of intensive research thanks to its ability produce high yields liquid products, known as oil. This is an important renewable intermediate which could be used for the subsequent production fuels and chemicals. For fossil-based materials, oil can provide circular building blocks. Furthermore, direct use in gas turbines also proven feasible. However, relatively o...

Pyrolysis is a promising and attractive way to convert lignocellulosic biomass into low carbon-emission energy products. To effectively use feedstock with size distribution produce biofuels, comprehensive kinetic model of the process, occurring at particle level, important. In this study, population balance (PBM)-distributed activation (DAEM) coupled first time developed predict pyrolysis. The ...

Numerous laboratory simulations and real-world events have demonstrated the thermal conversion of neat or high concentration of PCBs into the much more toxic PCDFs. Since millions of mineral oil transformers currently in service contain PCB concentrations in the 50 to 5000 ppm range, the thermal behavior of dilute PCB solutions is of practical and regulatory significance. In this work, neat Aro...

The synergistic influence of microalgae on the two forms organic waste biomasses, namely biomass wastes (BW) and its digested form (DBW), during co-pyrolysis was evaluated based thermal decomposition behaviour, gas yields, extent reaction kinetics. biomasses their blends were co-pyrolysed at three different heating rates (10, 15 20 °C min −1 ) in a thermogravimetric analyzer coupled with mass s...