Mordant-Free Dyeing of Organic Cotton Using Tea Extracts: Waste-to-ColorNaimul Islam, Al Shifath Nure, Sharif Dhali, Mohammad Jahidul Alam, Ke Wei and Sakil MahmudE3S Web Conf., 648 (2025) 03015DOI: https://doi.org/10.1051/e3sconf/202564803015