Introduction
Materials and methods
Characterization of UM-WP and UN-WP samples
Proximate and ultimate analyses
Thermogravimetric analysis (TGA)
SEM and EDXS analysis
Results and discussions
Proximate analysis
Samples | Particle size (mm) | Proximate analysis | Ultimate analysis | HHV* (MJ/kg) | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|
MC | VM | Ash | FC | C | H | N | O | S | |||
(wt. %) on db | (wt. %) | ||||||||||
UM-WP | 0.7 | 13.125 | 69.901 | 5.957 | 11.017 | 45.95 | 4.26 | 1.13 | 48.02 | 0.64 | 15.52 |
UN-WP | 13.011 | 69.723 | 5.988 | 11.278 | 43.49 | 4.51 | 3.16 | 47.91 | 0.93 | 15.49 |
Ultimate analysis
Thermal analysis
SEM analysis of UM-WP and UN-WP
EDXS analysis of UM-WP and UN-WP
Sample | Element | Elemental compositions | ||
---|---|---|---|---|
(wt. %) | ||||
Spectrum 1 | Spectrum 2 | Spectrum 3 | ||
UM-WP | C | 17.17 | * | * |
O | 16.38 | * | * | |
K | 61.01 | 65.87 | 80.08 | |
N | * | 23.36 | * | |
Cl | 4.29 | 6.65 | 13.73 | |
Mg | 2.49 | 1.23 | 2.54 | |
P | 3.07 | 0.89 | 2.43 | |
Si | * | 1.01 | * | |
S | * | 0.43 | 0.88 | |
Co | -0.41 | 0.57 | 0.34 | |
UN-WP | C | * | * | * |
O | 49.34 | * | * | |
K | 39.94 | 81.22 | 81.09 | |
N | * | * | * | |
Cl | 7.33 | 9.58 | 10.43 | |
Mg | 1.98 | 5.40 | 2.34 | |
P | 1.41 | 3.14 | * | |
Si | * | 2.52 | ||
Al | * | 0.65 | * | |
Co | * | 0.92 |