Heavy metal characterization of dewatered sludge from the Kenitra wastewater treatment plant (Morocco) for agricultural useAfaf Sahraoui, Adil Sahraoui, Fatima-Zahra Mekaoui and Mohammed OuhssineE3S Web Conf., 489 (2024) 03001DOI: https://doi.org/10.1051/e3sconf/202448903001