Cost Optimization Model for Effective Solid Waste Management in Minna, Niger State, Nigeria
Publication Date : 12-04-2021
This study examines the application of a cost-optimizing mode for effective solid waste management in Minna, Niger State, in view of the limited funds at the disposal of the State Environmental Protection Agency charged with solid waste management in the state. For this purpose, the town was divided into six zones and waste collection within the zones was monitored for six weeks. A linear programming model was developed to optimize collection of solid waste from the zones to two disposal sites, one existing and one proposed. The basic input data are distances between sources and sink nodes, amount of waste generated, haul cost, equipment, operating and investment cost. The model was solved using Tutorial aid Optimization package software (TORA), a minimum objective value of N128,267.97 was obtained after 24 iterations. When tested with the existing disposal systems, a minimum value of N135,549.67 was obtained after 15 iterations. A total of N7,271.70 will be saved daily and N2,657,820.50 annually, if two disposal sites are used as proposed in the model. It is recommended that the model be adopted to minimize cost of waste disposal system in Minna.
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