Valorization of Oil Palm Waste into Bioenergy and Value-Added Products: A Review and Future Research DirectionsFaradillah Raynita Yusuf, Suprihatin Suprihatin, Nastiti Siswi Indrasti and Udin HasanudinE3S Web Conf., 691 (2026) 01006DOI: https://doi.org/10.1051/e3sconf/202669101006