Carbonization of rice husk for adsorption of phosphate compounds: Influence of temperature and NaOH activatorHerawati Budiastuti, Nanda S. Badarjihadi, Tristan D. Purnama, Endang Widiastuti and SubariE3S Web of Conf., 479 (2024) 04004DOI: https://doi.org/10.1051/e3sconf/202447904004