FIG. 4 SCANNING ELECTRON MICROGRAPHS OF (a) RICE HUSK BIOCHAR (b) OUTER EPIDERMIS FROM KASETSART UNIVERSITY EQUIPMENT (KU), (c) RICE HUSK BIOCHAR (d)OUTER EPIDERMIS FROM LAND DEVELOPMENT DEPARTMENT EQUIPMENT (LDD) AND (e) RICE HUSK BIOCHAR (f) OUTER EPIDERMIS FROM THE TRADITIONAL KILN (T). THE WELL PRESERVED RELICT CARBONISED PLANT ORGANS ARE INDICATED.
FIG. 5 BACKSCATTERED ELECTRON MICROGRAPH, X-RAY SPECTRA AND ANALYSES OF INORGANIC PARTICLES EXPRESSED AS ATOMIC PERCENT FOR RICE HUSK BIOCHAR FROM KASETSART UNIVERSITY EQUIPMENT (KU) (Sp01 = AMORPHOUS SILICA, Sp02 = MOSTLY AMORPHOUS SILICA AND KHCO3 AND Sp03 = MOSTLY CaCO3, LITTLE KHCO3, CaSO4 AND SiO2)