Trisnawati, E. ., & Damajanti, N. (2023). Reduction of Heavy Metal Levels (Pb and Fe) in Chemical Laboratory Wastewater by the Coagulation Method using Moringa Seeds Bio-coagulants (Moringa oleifera). Research in Chemical Engineering, 2(2), 34–38. https://doi.org/10.30595/rice.v2i2.90