Amnath, Yupaporn, and Chatchaval Aiyathiti. 2026. “DECOLORIZATION OF LIGNIN IN WASTEWATER BY CATALYTIC OZONATION USING ZINC OXIDE-COATED RIVER GRAVEL”. Suranaree Journal of Science and Technology 33 (3):030389(1-9. https://doi.org/10.55766/sujst11561.