Production and Characterization of Coffee Husk Fuel Briquettes as an Alternative Energy Source

Table 4

Effect of heating time on yield and quality of char.

Time (hr)	Mass of coffee husk (kg)	Mass of char. (kg)	Ash content (%)	Volatile matter (%)	Fixed carbon (%)	Yield (%)	Fixed carbon yield (%)
1	1	0.38	5.71	38.26	56.03	38	48.4
2	1	0.35	6.01	35.43	58.56	35	50
3	1	0.30	10.53	23.90	65.57	30	58