Recovery of copper as CuS from artisanal gold smelting wastewater via sulfide precipitation and its utilization as an H2O2-based AOP catalystGabrielle Lumunsad, Thierry Eliane Austria and Khyle Glainmer QuitonE3S Web Conf., 557 (2024) 02003DOI: https://doi.org/10.1051/e3sconf/202455702003