| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1197436 | Journal of Analytical and Applied Pyrolysis | 2012 | 7 Pages |
The present study investigates the effect of different sample preparation methods on the pyrolysis behaviour of metal-added biomass; Willow samples were compared in the presence of two salts of zinc and lead containing sulphate and nitrate anions which were added to the wood samples with three different techniques as dry-mixing, impregnation and ion-exchange. The effect of acid and water wash as common demineralisation pre-treatments were also analysed to evaluate their roles in the thermal degradation of the biomass. Results from thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR) and pyrolysis-mass spectrometry (Py-MS) measurements indicated that these pre-treatments change the matrix and the physical–chemical properties of wood. Results suggested that these structural changes increase the thermal stability of cellulose during pyrolysis. Sample preparation was also found to be a crucial factor during pyrolysis; different anions of metal salts changed the weight loss rate curves of wood material, which indicates changes in the primary degradation process of the biomass. Results also showed that dry-mixing, impregnation or ion-exchange influence the thermal behaviour of wood in different ways when a chosen metal salt was and added to the wood material.
► The fuelwood characteristics of willow (Salix). ► Effects of demineralisation (acid and water wash) on the properties of biomass which were followed by ICP-OES, FT-IR and Py-MS measurements. ► Thermal degradation of wood detected by TGA shows changes in the presence of different metal salt anions of the same metal cation. ► Changes in the pyrolytic behaviour of metal added biomass due to different sample preparation methods.
