Boiling test results: comparison with other biomass resources.
Type of briquette
Time taken till the first boil
Amount of water boiled off
Amount of water boiled off per minute
% of ash remaining
1Sesame stalk
20 min
950 mL
10.3 gm/min
26%
2Sawdust
25 min
—
17.3 gm/min
27%
2Maize stover
40 min
—
8.3 gm/min
34%
2Coffee husk
23 min
14 gm/min
20%
Taken from Table 3, 2Chardust Ltd., and Spectrum Technical Services, “The use of biomass wastes to fabricate charcoal substitutes in Kenya,” Kenya, 2004 [8].