Singbua, Piyapong, Chaiyos Muangsuk, Swas Oajsalee, Pichai Traisom, Jaturon Tooltaisong, Rakpong Khanthawithi, Chainikorn Kunlawong, Jutatip Tongdechasamart, Wiroon Monatrakul, and Noppadon Khodphan. “Development of a Temperature-Controlled Biochar Kiln Using Macadamia Shells for Community-Level Waste Utilization”. Journal of Vongchavalitkul university 39, no. 1 (June 29, 2026): 125–142. accessed September 10, 2026. https://ph01.tci-thaijo.org/index.php/vujournal/article/view/268646.