Evaluating the Environmental Impact of Wood-Plastic Composites Using Recycled Polyethylene

This study evaluates the environmental impact of producing wood plastic composites (WPC) using recycled polyethylene (rPE) compared to virgin polyethylene (PE). The assessment was based on a Life Cycle Assessment (LCA) framework in accordance with ISO 14040 and ISO 14044 standards, applying the Leontief model to quantify environmental performance indicators. Two key parameters were analysed: specific CO2 emissions and the amount of waste destined for landfilling. The findings indicate that the incorporation of rPE into WPC production leads to an approximate 2.7-fold reduction in total CO₂ emissions and a tenfold decrease in landfilled waste. Even when accounting for the additional 10% emissions associated with waste collection and sorting, the overall reduction remains above 60%. These findings are consistent with contemporary circular economy strategies and confirm the environmental feasibility of substituting virgin polymers with recycled feedstock.