Results in Engineering (Dec 2023)
Effects of clay, gum Arabic and hybrid binders on the properties of rice and coffee HUSK briquettes
Abstract
The goal of this study was to determine the effects of clay, gum Arabic and hybrid binders on the physico-thermal and mechanical property of bio-composite briquettes from carbonize rice husks and coffee husks. Combined biochars briquettes were developed under low pressure (≤7 Mpa). The physical properties, density and calorific value of the briquettes were determined using thermogravimetric analysis and bomb calorimeter, respectively. The thermal properties were determined using water boiling time protocols. The particulate matter of 2.5 was determined using filter based gravimetric while the Carbon Monoxide and Carbon Dioxide levels were determined by electrochemical cell and dispersive infrared sensors, respectively. The results showed that the type of binder used in the development of bio-composite briquettes significantly affected their physico-thermal, mechanical property and calorific values. Heating values for bio-composite briquettes developed with clay binder ranged from 17140 to 18336 kJ/kg, briquettes with gum Arabic binder the calorific values ranged from 18053 to 18665 kJ/kg and the heating values of the bio-composite briquettes developed with hybrid binder ranged from 17404 to 18232 kJ/kg. The results of this work indicate that bio-composite briquettes with different binders can be applied as fuel in domestic and industrial application, however briquettes with gum Arabic had higher calorific values compared to briquettes with clay and briquettes with hybrid binder. The results obtained for all parameters showed that briquettes with a hybrid binders had a better performance based on boiling time had reduced, had higher burning rate and compressive strength, low fuel consumption. Therefore, this study recommends the use of the bio-composite briquettes produced with a hybrid binder and gum Arabic binder.
