Table 1.
Charred biomass type and binder for biochar briquette production.
Fig 1.
Charred T. cacao pod briquettes.
(A) = wax bindered T. cacao pod briquettes, (B) = starch bindered T. cacao pod briquettes, (C) = clay bindered T. cacao pod briquettes, and (D) = binderless T. cacao pod briquettes.
Fig 2.
Charred A. boonei sawdust briquettes.
(A) = wax bindered A. boonei sawdust briquettes, (B) = starch bindered A. boonei sawdust briquettes, (C) = clay bindered A. boonei sawdust briquettes, and (D) = binderless A. boonei sawdust briquettes.
Fig 3.
Moisture content of T. cacao pod husk and A. boonei sawdust biochar briquettes.
NB: Bars (SE)/Means with the same numerals are not significantly different (p>0.05).
Fig 4.
Basic and bulk densities of T. cacao pod husk and A. boonei sawdust biochar briquettes.
NB: Bars (SE)/Means with the same letter(s) and numerals for each property are not significantly different (p>0.05).
Fig 5.
Water resistance capacity of T. cacao pod husk and A. boonei sawdust biochar briquettes.
NB: Bars (SE)/Means with the same letter(s) are not significantly different (p>0.05).
Fig 6.
Fracture toughness of biochar briquettes produced from T. cacao pod husk and A. boonei sawdust.
NB: Bars (SE)/Means with the same letter(s) are not significantly different (p>0.05).
Fig 7.
Shatter Index for biochar briquettes produced from T. cacao pod husk and A. boonei sawdust.
NB: Bars (SE)/Means with the same letter(s) are not significantly different (p>0.05).
Fig 8.
Proximate properties of biochar briquettes produced from T. cacao pod husk and A. boonei sawdust.
NB: Bars (SE)/Means with the same letter(s) or numerals for each property are not significantly different (p>0.05).
Table 2.
Burning time and gas emission analysis for T. cacao pod husk and A. boonei sawdust biochar briquettes.
Fig 9.
Burning rate of biochar briquettes produced from T. cacao pod husk and A. boonei sawdust.
NB: Bars (SE)/Means with the same letter(s) are not significantly different (p>0.05).
Fig 10.
Specific fuel consumption of biochar briquettes produced from T. cacao pod husk and A. boonei sawdust.
NB: Bars (SE)/Means with the same letter(s) are not significantly different (p>0.05).
Fig 11.
Calorific value for biochar briquettes produced from T. cacao pod husk and A. boonei sawdust.
NB: Bars (SE)/Means with the same letter(s) are not significantly different (p>0.05).
Table 3.
ANOVA for physical, strength and combustion properties of bindered and binderless T. cacao pod husk and A. boonei sawdust biochar briquettes.