Charcoal Production from Macadamia Shells Using Super Sun Retort and Kon-Tiki KilnJutamas Swatdee, Kiatkamjon Intani, Donludee Jaisut, Weerachai Matthayatthaworn, Suparerk Roengjittree and Ratiya ThuwapanichayananE3S Web Conf., 661 (2025) 04019DOI: https://doi.org/10.1051/e3sconf/202566104019