Synthesis of activated carbon based on palm oil fruits with FTIR and XRD characterization Threea Shafida ; Iwan Gusniar ; Nidya Chitraningrum ; Irma Apriyani ; Achmad Subhan ; Hana Arisesa Komunikasi Fisika Indonesia 8 Sep 2026 10.31258/jkfi.23.1.59-66
