Erlangga, Reza, Dessy Agustina Sari, and Aulia Wahyuningtyas. 2025. “Characterization of Eichhornia Crassipes Bio-Adsorbent Activated by H3PO4 for the Removal of Lead Ion (Pb2+) from Wastewater of Battery Industry”. SINERGI 29 (2). Jakarta, Indonesia:279-86. https://doi.org/10.22441/sinergi.2025.2.002.