ACS SUSTAINABLE CHEMISTRY & ENGINEERING, cilt.13, sa.30, ss.11856-11867, 2025 (SCI-Expanded)
The textile industry plays a significant role in global trade but also contributes substantially to environmental pollution, particularly during dyeing and finishing processes that consume excessive water, energy, and chemicals. Recently, ionic liquids (ILs), known as green chemicals, have been considered a promising alternative to mitigate these adverse effects. While the literature suggests that IL-based dyeing can be performed at lower temperatures and with reduced water usage, detailed environmental assessments are lacking. This study employs life cycle analysis (LCA) to evaluate the environmental impacts of using ILs in dyeing 100% polyester fabric, comparing the results to those of the conventional dyeing process. Dyeing procedures for both methods were defined based on an extensive literature review. The results show that IL dyeing reduces the acidification potential by 53.72%, the eutrophication potential by 71.32%, the global warming potential by 71.88%, and the abiotic depletion (elements) potential by 95.90%. When ILs are recycled, these reductions reach up to 90% across all impact categories. Sensitivity analysis confirms that the IL concentration significantly influences environmental outcomes. These findings highlight the potential of ILs to reduce the environmental footprint of textile dyeing, though further research on scalability, cost, and recyclability is needed to support industrial adoption.