Abstract
Some solid waste incinerators burn waste that does not possess enough calorific value that justifies the installation of an energy recovery facility, this implies that a substantial amount of energy would be provided by an auxiliary burner. Hence, the presentation of this paper was to evaluate the feasibility of setting up a mass burn incinerator with energy recovery facility using the gross calorific value (GCV) of waste generated in Benin City of Nigeria which is considered as case study. Solid waste samples (wood, leather rubber, plastic, paper, textile material etc.) were collected from Benin metropolis and their GCV were determined in a laboratory using an XRY-1A digital oxygen bomb calorimeter. The average calorific value of the waste samples calculated from the experiment was 20,198.89kJ/kg, this value is higher than the 7,000kJ/kg minimum average calorific value of solid waste required for setting up an incineration plant with energy recovery.Keywords: Incineration, Solid waste, Gross calorific value, Energy recovery
Highlights
The design and operation of the plant meant for the processing of solid waste are highly related to the gross calorific value (GCV) of the solid waste materials (Ebru et al, 2009)
The parameter that is necessary for the definition of the energetic content of the materials is the gross calorific value (GCV) or higher heating value (HHV) defined as the quantity of heat generated by the complete combustion of a unit mass of sample at constant volume in an oxygen atmosphere assuming that both the water contained in the sample and that generated by the combined hydrogen, remain in liquid form (Carlos et al, 1991)
The results showed that GCV ranges from 19,642 KJ/kg to 13,643 KJ/kg for palm kernel husk and rice husk respectively which compared favourably with Nigeria’s subbituminous coal with a GCV of 28,466 KJ/kg
Summary
The design and operation of the plant (incinerator) meant for the processing of solid waste are highly related to the gross calorific value (GCV) of the solid waste materials (Ebru et al, 2009). As unveiled in a scholarly research finding, waste generation survey carried out in Benin metropolis shows 0.425kg of solid waste generated per person per day (ppd). The GCV of different agroforestry species and bio-based industry residues was experimentally determined by Loannis (2016), the fuel samples used were from agricultural residues and wastes (rice husks, apricot kernels, olive pits, sunflower husks, cotton stems, etc.), energy crops and wetland herbs (cardoon, switchgrass, common reed, narrow-leaf cattail). The purpose of this research work was to determine the GCV of combustible solid waste in Benin metropolis in order to assess the feasibility of establishing an incineration plant with energy recovery facility
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