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This research centers on the development and application of a customized integrated waste management environmental assessment (IWMEA) modeling tool for developing countries. A prime objective is to evolve an effective Solid Waste Management (SWM) scheme which meets cost, energy, and safe environmental emissions. SWM system consisting of several unit processes which includes collection, transfer, sorting, treatment (e.g. combustion, composting, recycling), and final disposal. In the study, waste is categorized into 48 items and their generation rates are defined for three types of sectors: single-family dwelling, multi-family dwelling, and commercial. The mass flow of each item through all possible combinations of unit processes is represented in a linear programming model using a unique modeling approach. Cost, energy consumption, and environmental emissions associated with waste processing at each unit process are computed in a set of specially implemented unit model. The Life Cycle Assessment approach is used to compute energy consumption and emissions of CO, fossil-fuel, and biomass-derived CO2, NOx, SOx, particulate matter, PM10 and greenhouse gases. A fuzzy multi-criteria decision support tool called IWMEA model for environmental assessment of integrated waste was developed. Four different scenarios of waste management systems were considered. These are: scenario one where all wastes (100,000 tonnes) landfilled; scenario two is 25% (25,000 tonnes) recycled, and the rest landfilled. In scenario three, we have 25% recycled, 20% composted and 55% landfilled; the last scenario has 25% recycled, 20% composted, 25% Energy From Waste (EFW), and the remaining landfilled. Results show that the energy saving with the scenarios are: +6978; -366,028; -366,963 and -545,407 GJ respectively. There was more reduction of greenhouse gases in scenario four as compared with others. However, there was more reduction of acid gases in scenario two in relation to others. Moreso, the reduction in heavy metals concentration was more pronounced in scenario three with respect to the rest scenarios. Economically, the fourth scenario was the best in term of cost, energy saving and greenhouse gas emission. It is therefore

Development of a Customized Integrated Waste Management Environmental Assessment (IWMEA) Model for Life Cycle Assessment (LCA) Of Solid Wastes