Comparative life cycle assessment and route optimization modeling of smart versus conventional municipal waste collection: Environmental impact analysis in an urban context

This study conducts a life cycle assessment comparing smart and conventional municipal waste collection systems over a 10-year period in a medium-sized urban area, employing the IMPACT 2002+ method and simulation modeling. The smart waste collection system demonstrated significant environmental advantages across key impact categories. Global Warming Potential was reduced by 45.7 % (19,209,995 kg COQ eq vs. 35,370,480 kg COQ eq) through optimized route planning and reduced fuel consumption. Human health impacts improved substantially, with the smart system showing a net positive effect (-9.7756731 DALY) compared to the conventional system's detrimental impact (23.574054 DALY). Ecosystem quality impacts decreased by 37.3 % (15,662,705 vs. 24,999,196 PDFm2yr), while resource depletion was 46 % lower in the smart system, despite increased mineral extraction for electronic components. The simulation revealed a 52 % reduction in vehicle distance traveled (38,535.36 vs. 80,282.00 km/month). While demonstrating clear environmental benefits, the study identifies challenges in electronic component lifecycle management and mineral resource recovery. Future research should prioritize developing recyclable components, integrating renewable energy sources, and optimizing end-of-life management strategies. These findings provide practical guidance for municipalities transitioning to smart waste collection systems, particularly in medium-sized urban areas. Real-world implementations in cities like Amsterdam and Barcelona have shown similar improvements, with route efficiency gains of 35-40 %, validating the potential of smart waste management technologies in urban sustainability initiatives.