Enrichment of Second Generation Ethanol Concentration Obtained from Napier Grass Pretreated with Sulfuric Acid and Hydrothermal PretreatmentVanarat Phakeenuya, Elizabeth Jayex Panakkal, Marttin Paulraj Gundupalli, Roungdao Klinjapo, Malinee Sriariyanun and Prapakorn TantayotaiE3S Web Conf., 602 (2025) 02007DOI: https://doi.org/10.1051/e3sconf/202560202007