Poster Number 29
See more from this Division: General Discipline Sessions
See more from this Session: Geomorphology (Posters)
Abstract:
The objectives of this study are to: 1) evaluate how the physical and chemical properties of ash vary as a function of combustion temperature and fuel type, 2) determine the effect of wetting on ash properties. Ash was generated in the laboratory using fuels from the three dominant tree species of western Montana (Lodgepole Pine (Pinus contorta), Ponderosa Pine (Pinus Ponderosa) and Douglas Fir (Pseudotoga menziesii)) at 100°C temperature increments from 300 to 900°C. A subsample of each specimen was saturated, left undisturbed for 24 hours and then oven dried at 104°C. Dry and wetted ash samples were characterized in terms of: color, particle size and shape (using scanning electron microscopy), carbon content, mineralogy (using X-ray diffraction), aggregate stability, porosity, water retention properties and hydraulic conductivity. Initial results indicate noticeable structural differences between fuel types at low combustion temperatures, however structural and chemical characteristics of ash are more dependent upon combustion temperature than fuel type. Ash produced at high combustion temperatures also exhibits structural and chemical alterations upon wetting.
See more from this Division: General Discipline Sessions
See more from this Session: Geomorphology (Posters)