Noinumsai, Supawadee, Sitthisak Waipib, and Chatchai Chada. 2026. “Enhancement of Phosphate Adsorption Efficiency in Synthetic Wastewater Using Water Treatment Plant Sludge Combined with Cocoa Husk”. Burapha Science Journal 31 (2 May-August). Chonburi, Thailand:499-518. https://li05.tci-thaijo.org/index.php/buuscij/article/view/836.