Characterization and Performance of Pineapple Stem Cationic Starch as an Eco-Friendly Flocculant for Phosphate Removal from WastewaterEden S. Erasga, Angela Mae A. Llames, Kim Z. Sangab and Angelica Nala T. YapE3S Web Conf., 690 (2026) 02005DOI: https://doi.org/10.1051/e3sconf/202669002005