Kaewtapan K, Sirithorn N, Chooaksorn W. Study on the Potential of Co-pelletizing Fuel from Municipal Wastewater Treatment System Sludge, Tea Ground, and Coffee Ground . Sci. & Eng. Connect [internet]. 2024 Dec. 27 [cited 2025 Apr. 26];47(4):348-61. available from: https://ph04.tci-thaijo.org/index.php/SEC/article/view/7768