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SEM Char Investigationand Further ECOSS Analysis |
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The next image is taken at 350x and provides more detail of the char's surface. The image reflects some of the biomass origin as the physical structure had been broken up by the mechanical actions of pelletizing.
This image is taken at 3270x clearly show pore structures. The evolution of this adsorbent material provides a porous internal structure as well. The melted look could not be seen from the char by eye and varies from higher temperature chars. We interpreted the images as a sign of the microscopic deposition of compounds which microbes might use as a food source.
The question of whether we could create a fertilizer external as well as internal was one we could only answer by trying. So our preliminary design was prepared. While the patent pending process can apply to many configurations, the development of a simple production technique was important.
In this case we used a mechanical fluidized bed easily adaptable to any gas
stream and injected CO2, and water vapor with ammonia. The char was feed
in at regular intervals varying from 15-30mins. The longer durations
produced significantly larger particles. The image on the left is the
initial char. Carbonized structures from the shell material are visible in the
center of the left panel picture. The image in the center is a material
produced after 15 minutes and the one one the left after 30 minutes.
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