Biogenic MnO₂ nanoparticles for heavy metal removalZainab J. Shanan, Laith A. Yaaqoob, Marwa Abed Hussein, Ali Saeed Jassim and Rand A. HayderBIO Web Conf., 194 (2025) 01050DOI: https://doi.org/10.1051/bioconf/202519401050