Energy Efficiency of Briquettes Derived from Three Agricultural Waste’s Charcoal Using Two Organic Binders

Abstract

Waste management could contribute significantly to reducing environmental degradation. Studies showed that briquetting provides with or without binder helps to manage wastes as energy fuels. However, the properties of many binders are not investigated extensively. This work investigated the effect of two organic binders' low rate on energy efficiency of Briquettes produced from charcoals of Tender Coconut Husks (TCH), Palm Kernel Shells (PKS) and Corn Cobs (CC). Bombax Costatum calyx (B) and Cissus Repens barks (C) were used separately as binders to elaborate briquettes. The briquettes were compared based on their energy efficiency parameters with wood charcoal as control. Energy efficiency parameters such as water boiling time (WBT), mass of biomass used (MB), burning rate (BR), temperature rise rate (TR) and maximum temperature in the furnace (T max) were measured from each biomass charcoal briquette and wood charcoal combustion. Water boiling test was applied to determine briquettes thermal properties. The results of WBT, BR, TR and T max were respectively within the ranges 3.4-12.3 min, 2.90-7.71 g/min, 4.63˚C/s-16.10˚C/s and 623˚C-900˚C. Corn Cobs charcoal briquettes with Bombax binder took the shortest time to boil water and also presented a high temperature rise rate and the highest maximum temperature. The lowest burning rates were obtained for Tender coconut husks charcoal briquettes with Cissus binder. They showed good material conservation for bombax bound briquettes. The results of our investigations showed that binders content increasing enhanced the thermomechanical stability and affected negatively the energy efficiency parameters of the studied briquettes.

The utilization of biomass waste as charcoal briquette to reduce waste disposal

“…The dried matter transformed into a pulverized form and converted to briquettes [6]. It is a real solution of protecting the environment and limiting deforestation by making briquette from biomass (waste) [7]. The biomass is not directly used, it can be converted to get the fuel with the desirable properties, i.e., the high calorific value, high durability, and low pollution emission [8].…”

“…Briquette from biomass contributes to the energy mix. The advantage of transforming biomass has highly efficient, and now it becomes research interest [7]. It seems that using the waste in briquettes will reduce some of the waste problem and increase national energy needs [9].…”

Reuse of Sawdust in Developing Countries in the Light of Sustainable Development Goals

“…According to Xiao et al [79], increasing the usage of charred briquettes made from renewable biomass waste streams can significantly decrease deforestation and harmful gas emissions. Azasi et al [80] and Obeng et al [81] both concluded that increased usage of charcoal briquettes adds significantly to energy sufficiency and the reduction of reliance on fossil fuels in developing nations. However, variables such as cost, availability, convenience of use, quality, and education on the benefits of utilizing briquettes influence the rising usage of burned briquettes [82].…”

Evaluation of Energy Properties of Mixed Biomass Charcoal Derived from Coconut, Palmyra Palm Nuts and Doum Palm Nuts Shells

“…Several studies were focus on the energy recovery of biodegradable residues [3][4][5][6][7]. Also for the search for alternative fuels, many researchers depend on their localization have evaluated the energy potential of certain local agricultural wastes depending on their availability in the region [7][8][9][10][11][12]. Others studies were focused on the optimal carbonization of these residues and agglomeration of biomass charcoals briquettes using organic or mineral binders [13][14][15].…”