Chaiyanan, Saipin, Injira Niyomtoon, Wimolsiri Porntaveewat, Noochnapa Sooksai, and Sitthipan Chaiyanan. “EFFLUENT MANAGEMENT OF PALM OIL FACTORY WITH OZONE TREATMENT BEFORE BIOGAS PRODUCTION”. Research Journal Phranakhon Rajabhat : Science and Technology 16, no. 2 (November 12, 2021): 45–56. accessed September 11, 2026. https://li01.tci-thaijo.org/index.php/PRRJ_Scitech/article/view/249693.