Effect of Orange Peel Waste Adsorbent Mass on Lead (Pb) Metal Biosorption in Artificial Liquid Waste: Pengaruh Massa Adsorben Limbah Kulit Jeruk terhadap Biosorpsi Logam Timbal (Pb) dalam Limbah Cair Buatan. Pharmasci. 2023;8(2):111-118. doi:10.53342/pharmasci.v8i2.359