Reduction of Heavy Metal (Pb) ions in industrial waste using activated carbon based on used catalysts (N. Herawati, R. Ummi Kalsum, & N. Miftakhul Muthiah , Trans.). (2023). International Journal of Scientific Research and Management (IJSRM), 11(10), 44-50. https://doi.org/10.18535/ijsrm/v11i10.ce02