Antarnusa, G. 2022. Preparation and Application of Magnetite (Fe3O4) Nanoparticles by Co-precipitation Method for Removal Rhodamine B in Wastewater. International Journal of Hydrological and Environmental for Sustainability. 1, 3 (Oct. 2022), 120–131. DOI:https://doi.org/10.58524/ijhes.v1i3.140.