Life cycle assessment (LCA) is a method for evaluating the environmental impact of a product . It considers the different life cycle stages of the product, such as raw material extraction, manufacturing, transportation, use, and disposal. To date, a limited number of LCA studies have been conducted on membrane fabrication. An LCA compared enzyme-coated membrane fabrication by polyethersulfone (PES) and cellulose acetate (CA) for micropollutant removal, and found that the bio-based CA had a slightly better environmental profile than the petrochemical PES . An LCA of TiO2-nanoparticle deposition on PES membranes found that the TiO2-deposition stage made an insignificant impact, while electricity, solvent, and polymer usage during the PES-membrane-manufacturing stage presented major environmental impacts . An LCA of nanomaterial (silver and graphene oxide) addition to a PVDF membrane during the fabrication of an algal membrane photoreactor (A-MPR) found that nanomaterial incorporation reduced the overall environmental footprint of the A-MPR system due to enhanced membrane permeability and antifouling properties . According to a recent LCA of polymeric-membrane production, substituting toxic solvents with green alternatives (such as ethylene carbonate) and using electricity from renewable sources significantly reduced the environmental impact and cost of the process . A generic process modelling-LCA approach for UF membrane fabrication demonstrated that applying LCA at an early stage improves the sustainability of membrane production . Unfortunately, no LCA studies of oil-water separation membranes have been reported to date.