Wichianphong N, Maison W. Preparation of biofuel pellets from water hyacinth and waste coffee grounds. RMUTSB Acad. J. [Internet]. 2020 Dec. 29 [cited 2024 Apr. 29];8(2):140-52. Available from: https://li01.tci-thaijo.org/index.php/rmutsb-sci/article/view/247484