Ngernyen, Y., Tangsathitkulchai, C., Khaoya, S., Intasa-ard, W. and Tangsathitkulchai, M. 2026. EFFECT OF SURFACE FUNCTIONAL GROUPS ON WATER VAPOR ADSORPTION OF EUCALYPTUS WOOD-BASED ACTIVATED CARBON. Suranaree Journal of Science and Technology. 14, 1 (Aug. 2026), 9–23.