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|Title: ||Strength properties and calorific values of sawdust-briquettes as wood-residue energy generation source from tropical hardwoods of different densities|
|Authors: ||Antwi-Boasiako, C.|
Acheampong, B. B.
|Issue Date: ||2016|
|Publisher: ||Biomass and Bioenergy|
|Citation: ||Biomass and Bioenergy, 85 (2016), 144-152|
|Abstract: ||Agricultural and wood residues are principal energy sources for domestic and industrial activities.
However, they are often hardly utilized. Conventional wood material for briquetting optimizes combustion
and efficient power production. The relationship between strength properties, resistance to
humidity and calorific values of sawdust-briquettes from three tropical hardwoods of different densities
[Cylicodiscus gabunensis (heavy), Antiaris toxicaria (medium) and Ceiba pentandra (light)] and a Mixed/
Composite type was determined. Wood density influenced all the briquette properties and positively
correlated with their Calorific Values (CVs) as: C. gabunensis > A. toxicaria > Mixed type > C. pentandra.
However, light timber briquettes had greater Compressive Strength, Swelling Value (i.e., less resistance to
humidity) and Shatter Index than dense wood briquettes: C. pentandra > Mixed type > A.
toxicaria > C. gabunensis. C. gabunensis briquette recorded less elongation value (8.85%) than the standard
stipulated (i.e., 20e50%/min.) specifying its quality to resist deterioration on exposure to humidity/water
in open sheds. Enormous briquette Swelling Values for A. toxicaria (60.04%), Mixed type (66.16%) and
C. pentandra (70.88%) indicate they would deteriorate fast and require great care to store, handle and
transport. However, the large Shatter Indices for the Mixed type (98.8%) and C. pentandra (99.16%) denote
their high durability to gravitational deterioration. Briquette technology, a “waste-to-energy method”,
contributes to offset bio-residue management problems and reduce toxic emissions from its incomplete
carbonization. Thus, comprehensive understanding of wood-residue briquette characteristics is significant
for fuel-energy generation.|
|Description: ||An article published by Biomass and Bioenergy, 85 (2016), 144-152|
|Appears in Collections:||College of Agric and Natural Resources|
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