Properties and combustion characteristics of bioslurry fuels from agricultural waste pyrolysis

Figures & data

Table 1. The physical and chemical characteristics of the selected biomass.

Parameter	Rice husk	Corncob	Bagasse
Cellulose (wt%)	35	27.71	38.8
Hemicellulose (wt%)	15	38.78	26
Lignin (wt%)	20	35.3	32.4
Ash content (wt%)	19.8	2.54	4.2
Moisture content (wt%)	9.08	12.44	8.5
Fixed carbon (FC) (wt%)	10	15.40	13.4
Volatile matter (VM) (wt%)	60.02	69.58	72.04
Ultimate Analysis
Carbon (C) (wt%)	45.2	42.70	44.2
Hydrogen (H) (wt%)	5.80	6.49	5.8
Oxygen (O) (wt%)	27.67	47.87	45.52
Nitrogen (N) (wt%)	1.38	0.25	0.2
Sulphur (S) (wt%)	0.23	0.15	0.08
Caloric value (MJ/kg)	14.80	16.13	14.44

Figure 1. A schematic diagram and photo of the apparatus for experimentation of single droplet combustion.

Table 2. The characteristics of the selected biochar.

Parameter	Rice husk Pyrolysis Temperature (C)			Corncob Pyrolysis Temperature (C)			Bagasse Pyrolysis Temperature (C)
	400	500	600	400	500	600	400	500	600
Particle Size (micron)	49.90	39.43	37.50	53.39	47.57	33.40	47.40	44.83	24.24
Ash content (wt%)	19.50	19.83	21.17	16.00	17.17	19.83	16.50	17.83	18.33
Moisture content (wt%)	5.36	5.25	4.22	5.21	4.68	4.32	5.97	4.21	3.98
Fixed carbon (FC) (wt%)	49.67	53.50	57.17	49.14	59.02	60.67	56.67	55.50	61.08
Volatile matter (VM) (wt%)	23.94	21.65	18.73	23.66	19.03	18.66	19.09	22.63	18.40
Calorific Value (MJ/kg)	18.47	18.34	24.89	31.86	32.13	32.33	25.84	30.26	32.13

Figure 2. SEM image of biochar surface at various temperatures.

Figure 3. Typical pyrolysis oil of biomass in various temperature (in picture: bagasse).

Figure 4. Effect of biochar loading on (a) the viscosity and (b) density of slurry fuel.

Figure 5. Effect of biochar loading on the caloric value of slurry fuel.

Figure 6. Stability index of selected biochar, (a) bagasse, (b) Corncob, (c) rice husk.

Figure 7. Typical of droplet burning of the slurry fuel from various biochar sources at 15% addition.

Figure 8. Temporal variations of the square of the normalised droplet diameters of slurry fuels added with different biochar concentrations.

Figure 9. Effect of the biochar addition on (a) ignition delay time; (b) burnout time; and (c) burning rate of slurry fuels.

Data availability statement

The data that support the findings of this study are available in cloud at https://s.ub.ac.id/bioslurrydata. These data were derived from the following resources available in the public domain: [https://s.ub.ac.id/bioslurrydata].