Pyrolysis Conversion Reaction Mechanism of Sewage Sludge to Biofuel

Abstract

The conversion reactions to produce biofuel include many possible paths and routes leads to chemical changes due to each bath. For example, biofuel produced from solid wastes mainly consists of methane gas (CH4) and carbon dioxide (CO2), in addition to traces of chemicals as impurities.To determine the optimum reactants quantities, and to help engineers in designing the pyrolysis plants we made this research. In this research we will suggest the mechanisms of the internal (sub) reactions that occurs during the conversion of sewage sludge to biofuel via pyrolysis operation according to the results of the analysis of samples taken from different stages of the pyrolysis depending on the products of the research of (Pyrolysis of Sewage Sludge), and its analysis before and after the reaction.We used and will use many techniques as shown below:1- Fourier-Transform Infrared (FTIR) analysis in order to know the chromophores to the reactants and products.2- X-Ray Fluorescence (XRF) analysis for the reactant to determine the metals in the sludge.3- Carbon-Hydrogen-Nitrogen analysis (C.H.N.) for the samples before and after and within the pyrolysis.4- Differential Scanning Calorimetry (DSC) analysis to determine the stages of pyrolysis operation and the rate determining step (slow step) that affect the velocity of the reaction.