According to a contribution analysis, coal-based electricity and PMMA-co-PCMSt synthesis are the two major contributors to the midpoint and endpoint impact categories for both membranes. The electricity used in India largely relies on coal, whereas those used in other countries (such as the UK and Canada) are derived from green energy sources. A sensitivity analysis indicates that replacing coal-based electricity with photovoltaic electricity could significantly reduce the negative impacts on GWP100, ecosystem quality, human health, and resource scarcity.