Pengukuran Daya Jerap Dan Efektivitas Adsorpsi Ion Besi (Fe2+) Menggunakan Ad…

ABSTRACT The issue of heavy metal contamination in industrial wastewater, particularly ferrous ions (Fe²⁺), poses a serious threat to the environment and human health. One effective and eco-friendly solution is the adsorption method using biomass-based adsorbents. Coffee grounds, an organic waste rich in lignocellulose, show great potential as a raw material for biomass adsorbents. Chemical…