Perbandingan Gugus Fungsi dan Morfologi Permukaan Karbon Aktif dari Pelepah Kelapa Sawit Menggunakan Aktivator Asam Fosfat (H3PO4) dan Asam Nitrat (HNO3): Comparison of Functional Groups and Morphologies of Activated Carbon Surfaces from Palm Tree Fronds Using Phosphoric Acid (H3PO4) and Nitric Acid (HNO3) Activators. Talenta Conference Series: Science and Technology (ST), [S. l.], v. 1, n. 2, p. 204–208, 2018. DOI: 10.32734/st.v1i2.299. Disponível em: https://talentaconfseries.usu.ac.id/index.php/st/article/view/299. Acesso em: 1 may. 2026.