From biomass waste to climate action: Characterizing of bioenergy pellet from oil palm fronds and branches wood of mangroveArif Nuryawan, Rizki Fadhillah Lubis, Juliza Hidayati, Delvian Delvian, Rahmawaty Rahmawaty and Sigit Deni SasmitoE3S Web Conf., 682 (2025) 04001DOI: https://doi.org/10.1051/e3sconf/202568204001